<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" lang=""> <head> <meta http-equiv="X-UA-Compatible" content="IE=Edge" /> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>django.core.validators — Django 1.11.20 documentation</title> <link rel="stylesheet" href="../../../_static/default.css" type="text/css" /> <link rel="stylesheet" href="../../../_static/pygments.css" type="text/css" /> <script type="text/javascript" id="documentation_options" data-url_root="../../../" src="../../../_static/documentation_options.js"></script> <script type="text/javascript" src="../../../_static/jquery.js"></script> <script type="text/javascript" src="../../../_static/underscore.js"></script> <script type="text/javascript" src="../../../_static/doctools.js"></script> <script type="text/javascript" src="../../../_static/language_data.js"></script> <link 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class="kn">from</span> <span class="nn">__future__</span> <span class="k">import</span> <span class="n">unicode_literals</span> <span class="kn">import</span> <span class="nn">os</span> <span class="kn">import</span> <span class="nn">re</span> <span class="kn">from</span> <span class="nn">django.core.exceptions</span> <span class="k">import</span> <span class="n">ValidationError</span> <span class="kn">from</span> <span class="nn">django.utils</span> <span class="k">import</span> <span class="n">six</span> <span class="kn">from</span> <span class="nn">django.utils.deconstruct</span> <span class="k">import</span> <span class="n">deconstructible</span> <span class="kn">from</span> <span class="nn">django.utils.encoding</span> <span class="k">import</span> <span class="n">force_text</span> <span class="kn">from</span> <span class="nn">django.utils.functional</span> <span class="k">import</span> <span class="n">SimpleLazyObject</span> <span class="kn">from</span> <span class="nn">django.utils.ipv6</span> <span class="k">import</span> <span class="n">is_valid_ipv6_address</span> <span class="kn">from</span> <span class="nn">django.utils.six.moves.urllib.parse</span> <span class="k">import</span> <span class="n">urlsplit</span><span class="p">,</span> <span class="n">urlunsplit</span> <span class="kn">from</span> <span class="nn">django.utils.translation</span> <span class="k">import</span> <span class="n">ugettext_lazy</span> <span class="k">as</span> <span class="n">_</span><span class="p">,</span> <span class="n">ungettext_lazy</span> <span class="c1"># These values, if given to validate(), will trigger the self.required check.</span> <span class="n">EMPTY_VALUES</span> <span class="o">=</span> <span class="p">(</span><span class="kc">None</span><span class="p">,</span> <span class="s1">''</span><span class="p">,</span> <span class="p">[],</span> <span class="p">(),</span> <span class="p">{})</span> <span class="k">def</span> <span class="nf">_lazy_re_compile</span><span class="p">(</span><span class="n">regex</span><span class="p">,</span> <span class="n">flags</span><span class="o">=</span><span class="mi">0</span><span class="p">):</span> <span class="sd">"""Lazily compile a regex with flags."""</span> <span class="k">def</span> <span class="nf">_compile</span><span class="p">():</span> <span class="c1"># Compile the regex if it was not passed pre-compiled.</span> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">regex</span><span class="p">,</span> <span class="n">six</span><span class="o">.</span><span class="n">string_types</span><span class="p">):</span> <span class="k">return</span> <span class="n">re</span><span class="o">.</span><span class="n">compile</span><span class="p">(</span><span class="n">regex</span><span class="p">,</span> <span class="n">flags</span><span class="p">)</span> <span class="k">else</span><span class="p">:</span> <span class="k">assert</span> <span class="ow">not</span> <span class="n">flags</span><span class="p">,</span> <span class="s2">"flags must be empty if regex is passed pre-compiled"</span> <span class="k">return</span> <span class="n">regex</span> <span class="k">return</span> <span class="n">SimpleLazyObject</span><span class="p">(</span><span class="n">_compile</span><span class="p">)</span> <div class="viewcode-block" id="RegexValidator"><a class="viewcode-back" href="../../../ref/validators.html#django.core.validators.RegexValidator">[docs]</a><span class="nd">@deconstructible</span> <span class="k">class</span> <span class="nc">RegexValidator</span><span class="p">(</span><span class="nb">object</span><span class="p">):</span> <span class="n">regex</span> <span class="o">=</span> <span class="s1">''</span> <span class="n">message</span> <span class="o">=</span> <span class="n">_</span><span class="p">(</span><span class="s1">'Enter a valid value.'</span><span class="p">)</span> <span class="n">code</span> <span class="o">=</span> <span class="s1">'invalid'</span> <span class="n">inverse_match</span> <span class="o">=</span> <span class="kc">False</span> <span class="n">flags</span> <span class="o">=</span> <span class="mi">0</span> <span class="k">def</span> <span class="nf">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">regex</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> <span class="n">message</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> <span class="n">code</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> <span class="n">inverse_match</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> <span class="n">flags</span><span class="o">=</span><span class="kc">None</span><span class="p">):</span> <span class="k">if</span> <span class="n">regex</span> <span class="ow">is</span> <span class="ow">not</span> <span class="kc">None</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">regex</span> <span class="o">=</span> <span class="n">regex</span> <span class="k">if</span> <span class="n">message</span> <span class="ow">is</span> <span class="ow">not</span> <span class="kc">None</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">message</span> <span class="o">=</span> <span class="n">message</span> <span class="k">if</span> <span class="n">code</span> <span class="ow">is</span> <span class="ow">not</span> <span class="kc">None</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">code</span> <span class="o">=</span> <span class="n">code</span> <span class="k">if</span> <span class="n">inverse_match</span> <span class="ow">is</span> <span class="ow">not</span> <span class="kc">None</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">inverse_match</span> <span class="o">=</span> <span class="n">inverse_match</span> <span class="k">if</span> <span class="n">flags</span> <span class="ow">is</span> <span class="ow">not</span> <span class="kc">None</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">flags</span> <span class="o">=</span> <span class="n">flags</span> <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">flags</span> <span class="ow">and</span> <span class="ow">not</span> <span class="nb">isinstance</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">regex</span><span class="p">,</span> <span class="n">six</span><span class="o">.</span><span class="n">string_types</span><span class="p">):</span> <span class="k">raise</span> <span class="ne">TypeError</span><span class="p">(</span><span class="s2">"If the flags are set, regex must be a regular expression string."</span><span class="p">)</span> <span class="bp">self</span><span class="o">.</span><span class="n">regex</span> <span class="o">=</span> <span class="n">_lazy_re_compile</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">regex</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">flags</span><span class="p">)</span> <span class="k">def</span> <span class="nf">__call__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">value</span><span class="p">):</span> <span class="sd">"""</span> <span class="sd"> Validate that the input contains a match for the regular expression</span> <span class="sd"> if inverse_match is False, otherwise raise ValidationError.</span> <span class="sd"> """</span> <span class="k">if</span> <span class="ow">not</span> <span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">inverse_match</span> <span class="ow">is</span> <span class="ow">not</span> <span class="nb">bool</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">regex</span><span class="o">.</span><span class="n">search</span><span class="p">(</span> <span class="n">force_text</span><span class="p">(</span><span class="n">value</span><span class="p">)))):</span> <span class="k">raise</span> <span class="n">ValidationError</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">message</span><span class="p">,</span> <span class="n">code</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">code</span><span class="p">)</span> <span class="k">def</span> <span class="nf">__eq__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">other</span><span class="p">):</span> <span class="k">return</span> <span class="p">(</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">other</span><span class="p">,</span> <span class="n">RegexValidator</span><span class="p">)</span> <span class="ow">and</span> <span class="bp">self</span><span class="o">.</span><span class="n">regex</span><span class="o">.</span><span class="n">pattern</span> <span class="o">==</span> <span class="n">other</span><span class="o">.</span><span class="n">regex</span><span class="o">.</span><span class="n">pattern</span> <span class="ow">and</span> <span class="bp">self</span><span class="o">.</span><span class="n">regex</span><span class="o">.</span><span class="n">flags</span> <span class="o">==</span> <span class="n">other</span><span class="o">.</span><span class="n">regex</span><span class="o">.</span><span class="n">flags</span> <span class="ow">and</span> <span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">message</span> <span class="o">==</span> <span class="n">other</span><span class="o">.</span><span class="n">message</span><span class="p">)</span> <span class="ow">and</span> <span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">code</span> <span class="o">==</span> <span class="n">other</span><span class="o">.</span><span class="n">code</span><span class="p">)</span> <span class="ow">and</span> <span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">inverse_match</span> <span class="o">==</span> <span class="n">other</span><span class="o">.</span><span class="n">inverse_match</span><span class="p">)</span> <span class="p">)</span> <span class="k">def</span> <span class="nf">__ne__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">other</span><span class="p">):</span> <span class="k">return</span> <span class="ow">not</span> <span class="p">(</span><span class="bp">self</span> <span class="o">==</span> <span class="n">other</span><span class="p">)</span></div> <div class="viewcode-block" id="URLValidator"><a class="viewcode-back" href="../../../ref/validators.html#django.core.validators.URLValidator">[docs]</a><span class="nd">@deconstructible</span> <span class="k">class</span> <span class="nc">URLValidator</span><span class="p">(</span><span class="n">RegexValidator</span><span class="p">):</span> <span class="n">ul</span> <span class="o">=</span> <span class="s1">'</span><span class="se">\u00a1</span><span class="s1">-</span><span class="se">\uffff</span><span class="s1">'</span> <span class="c1"># unicode letters range (must be a unicode string, not a raw string)</span> <span class="c1"># IP patterns</span> <span class="n">ipv4_re</span> <span class="o">=</span> <span class="sa">r</span><span class="s1">'(?:25[0-5]|2[0-4]\d|[0-1]?\d?\d)(?:\.(?:25[0-5]|2[0-4]\d|[0-1]?\d?\d))</span><span class="si">{3}</span><span class="s1">'</span> <span class="n">ipv6_re</span> <span class="o">=</span> <span class="sa">r</span><span class="s1">'\[[0-9a-f:\.]+\]'</span> <span class="c1"># (simple regex, validated later)</span> <span class="c1"># Host patterns</span> <span class="n">hostname_re</span> <span class="o">=</span> <span class="sa">r</span><span class="s1">'[a-z'</span> <span class="o">+</span> <span class="n">ul</span> <span class="o">+</span> <span class="sa">r</span><span class="s1">'0-9](?:[a-z'</span> <span class="o">+</span> <span class="n">ul</span> <span class="o">+</span> <span class="sa">r</span><span class="s1">'0-9-]{0,61}[a-z'</span> <span class="o">+</span> <span class="n">ul</span> <span class="o">+</span> <span class="sa">r</span><span class="s1">'0-9])?'</span> <span class="c1"># Max length for domain name labels is 63 characters per RFC 1034 sec. 3.1</span> <span class="n">domain_re</span> <span class="o">=</span> <span class="sa">r</span><span class="s1">'(?:\.(?!-)[a-z'</span> <span class="o">+</span> <span class="n">ul</span> <span class="o">+</span> <span class="sa">r</span><span class="s1">'0-9-]{1,63}(?<!-))*'</span> <span class="n">tld_re</span> <span class="o">=</span> <span class="p">(</span> <span class="sa">r</span><span class="s1">'\.'</span> <span class="c1"># dot</span> <span class="sa">r</span><span class="s1">'(?!-)'</span> <span class="c1"># can't start with a dash</span> <span class="sa">r</span><span class="s1">'(?:[a-z'</span> <span class="o">+</span> <span class="n">ul</span> <span class="o">+</span> <span class="s1">'-]{2,63}'</span> <span class="c1"># domain label</span> <span class="sa">r</span><span class="s1">'|xn--[a-z0-9]{1,59})'</span> <span class="c1"># or punycode label</span> <span class="sa">r</span><span class="s1">'(?<!-)'</span> <span class="c1"># can't end with a dash</span> <span class="sa">r</span><span class="s1">'\.?'</span> <span class="c1"># may have a trailing dot</span> <span class="p">)</span> <span class="n">host_re</span> <span class="o">=</span> <span class="s1">'('</span> <span class="o">+</span> <span class="n">hostname_re</span> <span class="o">+</span> <span class="n">domain_re</span> <span class="o">+</span> <span class="n">tld_re</span> <span class="o">+</span> <span class="s1">'|localhost)'</span> <span class="n">regex</span> <span class="o">=</span> <span class="n">_lazy_re_compile</span><span class="p">(</span> <span class="sa">r</span><span class="s1">'^(?:[a-z0-9\.\-\+]*)://'</span> <span class="c1"># scheme is validated separately</span> <span class="sa">r</span><span class="s1">'(?:\S+(?::\S*)?@)?'</span> <span class="c1"># user:pass authentication</span> <span class="sa">r</span><span class="s1">'(?:'</span> <span class="o">+</span> <span class="n">ipv4_re</span> <span class="o">+</span> <span class="s1">'|'</span> <span class="o">+</span> <span class="n">ipv6_re</span> <span class="o">+</span> <span class="s1">'|'</span> <span class="o">+</span> <span class="n">host_re</span> <span class="o">+</span> <span class="s1">')'</span> <span class="sa">r</span><span class="s1">'(?::\d{2,5})?'</span> <span class="c1"># port</span> <span class="sa">r</span><span class="s1">'(?:[/?#][^\s]*)?'</span> <span class="c1"># resource path</span> <span class="sa">r</span><span class="s1">'\Z'</span><span class="p">,</span> <span class="n">re</span><span class="o">.</span><span class="n">IGNORECASE</span><span class="p">)</span> <span class="n">message</span> <span class="o">=</span> <span class="n">_</span><span class="p">(</span><span class="s1">'Enter a valid URL.'</span><span class="p">)</span> <span class="n">schemes</span> <span class="o">=</span> <span class="p">[</span><span class="s1">'http'</span><span class="p">,</span> <span class="s1">'https'</span><span class="p">,</span> <span class="s1">'ftp'</span><span class="p">,</span> <span class="s1">'ftps'</span><span class="p">]</span> <span class="k">def</span> <span class="nf">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">schemes</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> <span class="o">**</span><span class="n">kwargs</span><span class="p">):</span> <span class="nb">super</span><span class="p">(</span><span class="n">URLValidator</span><span class="p">,</span> <span class="bp">self</span><span class="p">)</span><span class="o">.</span><span class="fm">__init__</span><span class="p">(</span><span class="o">**</span><span class="n">kwargs</span><span class="p">)</span> <span class="k">if</span> <span class="n">schemes</span> <span class="ow">is</span> <span class="ow">not</span> <span class="kc">None</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">schemes</span> <span class="o">=</span> <span class="n">schemes</span> <span class="k">def</span> <span class="nf">__call__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">value</span><span class="p">):</span> <span class="n">value</span> <span class="o">=</span> <span class="n">force_text</span><span class="p">(</span><span class="n">value</span><span class="p">)</span> <span class="c1"># Check first if the scheme is valid</span> <span class="n">scheme</span> <span class="o">=</span> <span class="n">value</span><span class="o">.</span><span class="n">split</span><span class="p">(</span><span class="s1">'://'</span><span class="p">)[</span><span class="mi">0</span><span class="p">]</span><span class="o">.</span><span class="n">lower</span><span class="p">()</span> <span class="k">if</span> <span class="n">scheme</span> <span class="ow">not</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">schemes</span><span class="p">:</span> <span class="k">raise</span> <span class="n">ValidationError</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">message</span><span class="p">,</span> <span class="n">code</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">code</span><span class="p">)</span> <span class="c1"># Then check full URL</span> <span class="k">try</span><span class="p">:</span> <span class="nb">super</span><span class="p">(</span><span class="n">URLValidator</span><span class="p">,</span> <span class="bp">self</span><span class="p">)</span><span class="o">.</span><span class="fm">__call__</span><span class="p">(</span><span class="n">value</span><span class="p">)</span> <span class="k">except</span> <span class="n">ValidationError</span> <span class="k">as</span> <span class="n">e</span><span class="p">:</span> <span class="c1"># Trivial case failed. Try for possible IDN domain</span> <span class="k">if</span> <span class="n">value</span><span class="p">:</span> <span class="k">try</span><span class="p">:</span> <span class="n">scheme</span><span class="p">,</span> <span class="n">netloc</span><span class="p">,</span> <span class="n">path</span><span class="p">,</span> <span class="n">query</span><span class="p">,</span> <span class="n">fragment</span> <span class="o">=</span> <span class="n">urlsplit</span><span class="p">(</span><span class="n">value</span><span class="p">)</span> <span class="k">except</span> <span class="ne">ValueError</span><span class="p">:</span> <span class="c1"># for example, "Invalid IPv6 URL"</span> <span class="k">raise</span> <span class="n">ValidationError</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">message</span><span class="p">,</span> <span class="n">code</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">code</span><span class="p">)</span> <span class="k">try</span><span class="p">:</span> <span class="n">netloc</span> <span class="o">=</span> <span class="n">netloc</span><span class="o">.</span><span class="n">encode</span><span class="p">(</span><span class="s1">'idna'</span><span class="p">)</span><span class="o">.</span><span class="n">decode</span><span class="p">(</span><span class="s1">'ascii'</span><span class="p">)</span> <span class="c1"># IDN -> ACE</span> <span class="k">except</span> <span class="ne">UnicodeError</span><span class="p">:</span> <span class="c1"># invalid domain part</span> <span class="k">raise</span> <span class="n">e</span> <span class="n">url</span> <span class="o">=</span> <span class="n">urlunsplit</span><span class="p">((</span><span class="n">scheme</span><span class="p">,</span> <span class="n">netloc</span><span class="p">,</span> <span class="n">path</span><span class="p">,</span> <span class="n">query</span><span class="p">,</span> <span class="n">fragment</span><span class="p">))</span> <span class="nb">super</span><span class="p">(</span><span class="n">URLValidator</span><span class="p">,</span> <span class="bp">self</span><span class="p">)</span><span class="o">.</span><span class="fm">__call__</span><span class="p">(</span><span class="n">url</span><span class="p">)</span> <span class="k">else</span><span class="p">:</span> <span class="k">raise</span> <span class="k">else</span><span class="p">:</span> <span class="c1"># Now verify IPv6 in the netloc part</span> <span class="n">host_match</span> <span class="o">=</span> <span class="n">re</span><span class="o">.</span><span class="n">search</span><span class="p">(</span><span class="sa">r</span><span class="s1">'^\[(.+)\](?::\d{2,5})?$'</span><span class="p">,</span> <span class="n">urlsplit</span><span class="p">(</span><span class="n">value</span><span class="p">)</span><span class="o">.</span><span class="n">netloc</span><span class="p">)</span> <span class="k">if</span> <span class="n">host_match</span><span class="p">:</span> <span class="n">potential_ip</span> <span class="o">=</span> <span class="n">host_match</span><span class="o">.</span><span class="n">groups</span><span class="p">()[</span><span class="mi">0</span><span class="p">]</span> <span class="k">try</span><span class="p">:</span> <span class="n">validate_ipv6_address</span><span class="p">(</span><span class="n">potential_ip</span><span class="p">)</span> <span class="k">except</span> <span class="n">ValidationError</span><span class="p">:</span> <span class="k">raise</span> <span class="n">ValidationError</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">message</span><span class="p">,</span> <span class="n">code</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">code</span><span class="p">)</span> <span class="c1"># The maximum length of a full host name is 253 characters per RFC 1034</span> <span class="c1"># section 3.1. It's defined to be 255 bytes or less, but this includes</span> <span class="c1"># one byte for the length of the name and one byte for the trailing dot</span> <span class="c1"># that's used to indicate absolute names in DNS.</span> <span class="k">if</span> <span class="nb">len</span><span class="p">(</span><span class="n">urlsplit</span><span class="p">(</span><span class="n">value</span><span class="p">)</span><span class="o">.</span><span class="n">netloc</span><span class="p">)</span> <span class="o">></span> <span class="mi">253</span><span class="p">:</span> <span class="k">raise</span> <span class="n">ValidationError</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">message</span><span class="p">,</span> <span class="n">code</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">code</span><span class="p">)</span></div> <span class="n">integer_validator</span> <span class="o">=</span> <span class="n">RegexValidator</span><span class="p">(</span> <span class="n">_lazy_re_compile</span><span class="p">(</span><span class="sa">r</span><span class="s1">'^-?\d+\Z'</span><span class="p">),</span> <span class="n">message</span><span class="o">=</span><span class="n">_</span><span class="p">(</span><span class="s1">'Enter a valid integer.'</span><span class="p">),</span> <span class="n">code</span><span class="o">=</span><span class="s1">'invalid'</span><span class="p">,</span> <span class="p">)</span> <span class="k">def</span> <span class="nf">validate_integer</span><span class="p">(</span><span class="n">value</span><span class="p">):</span> <span class="k">return</span> <span class="n">integer_validator</span><span class="p">(</span><span class="n">value</span><span class="p">)</span> <div class="viewcode-block" id="EmailValidator"><a class="viewcode-back" href="../../../ref/validators.html#django.core.validators.EmailValidator">[docs]</a><span class="nd">@deconstructible</span> <span class="k">class</span> <span class="nc">EmailValidator</span><span class="p">(</span><span class="nb">object</span><span class="p">):</span> <span class="n">message</span> <span class="o">=</span> <span class="n">_</span><span class="p">(</span><span class="s1">'Enter a valid email address.'</span><span class="p">)</span> <span class="n">code</span> <span class="o">=</span> <span class="s1">'invalid'</span> <span class="n">user_regex</span> <span class="o">=</span> <span class="n">_lazy_re_compile</span><span class="p">(</span> <span class="sa">r</span><span class="s2">"(^[-!#$%&'*+/=?^_`</span><span class="si">{}</span><span class="s2">|~0-9A-Z]+(\.[-!#$%&'*+/=?^_`</span><span class="si">{}</span><span class="s2">|~0-9A-Z]+)*\Z"</span> <span class="c1"># dot-atom</span> <span class="sa">r</span><span class="s1">'|^"([\001-\010\013\014\016-\037!#-\[\]-\177]|</span><span class="se">\\</span><span class="s1">[\001-\011\013\014\016-\177])*"\Z)'</span><span class="p">,</span> <span class="c1"># quoted-string</span> <span class="n">re</span><span class="o">.</span><span class="n">IGNORECASE</span><span class="p">)</span> <span class="n">domain_regex</span> <span class="o">=</span> <span class="n">_lazy_re_compile</span><span class="p">(</span> <span class="c1"># max length for domain name labels is 63 characters per RFC 1034</span> <span class="sa">r</span><span class="s1">'((?:[A-Z0-9](?:[A-Z0-9-]{0,61}[A-Z0-9])?\.)+)(?:[A-Z0-9-]{2,63}(?<!-))\Z'</span><span class="p">,</span> <span class="n">re</span><span class="o">.</span><span class="n">IGNORECASE</span><span class="p">)</span> <span class="n">literal_regex</span> <span class="o">=</span> <span class="n">_lazy_re_compile</span><span class="p">(</span> <span class="c1"># literal form, ipv4 or ipv6 address (SMTP 4.1.3)</span> <span class="sa">r</span><span class="s1">'\[([A-f0-9:\.]+)\]\Z'</span><span class="p">,</span> <span class="n">re</span><span class="o">.</span><span class="n">IGNORECASE</span><span class="p">)</span> <span class="n">domain_whitelist</span> <span class="o">=</span> <span class="p">[</span><span class="s1">'localhost'</span><span class="p">]</span> <span class="k">def</span> <span class="nf">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">message</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> <span class="n">code</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> <span class="n">whitelist</span><span class="o">=</span><span class="kc">None</span><span class="p">):</span> <span class="k">if</span> <span class="n">message</span> <span class="ow">is</span> <span class="ow">not</span> <span class="kc">None</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">message</span> <span class="o">=</span> <span class="n">message</span> <span class="k">if</span> <span class="n">code</span> <span class="ow">is</span> <span class="ow">not</span> <span class="kc">None</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">code</span> <span class="o">=</span> <span class="n">code</span> <span class="k">if</span> <span class="n">whitelist</span> <span class="ow">is</span> <span class="ow">not</span> <span class="kc">None</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">domain_whitelist</span> <span class="o">=</span> <span class="n">whitelist</span> <span class="k">def</span> <span class="nf">__call__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">value</span><span class="p">):</span> <span class="n">value</span> <span class="o">=</span> <span class="n">force_text</span><span class="p">(</span><span class="n">value</span><span class="p">)</span> <span class="k">if</span> <span class="ow">not</span> <span class="n">value</span> <span class="ow">or</span> <span class="s1">'@'</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">value</span><span class="p">:</span> <span class="k">raise</span> <span class="n">ValidationError</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">message</span><span class="p">,</span> <span class="n">code</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">code</span><span class="p">)</span> <span class="n">user_part</span><span class="p">,</span> <span class="n">domain_part</span> <span class="o">=</span> <span class="n">value</span><span class="o">.</span><span class="n">rsplit</span><span class="p">(</span><span class="s1">'@'</span><span class="p">,</span> <span class="mi">1</span><span class="p">)</span> <span class="k">if</span> <span class="ow">not</span> <span class="bp">self</span><span class="o">.</span><span class="n">user_regex</span><span class="o">.</span><span class="n">match</span><span class="p">(</span><span class="n">user_part</span><span class="p">):</span> <span class="k">raise</span> <span class="n">ValidationError</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">message</span><span class="p">,</span> <span class="n">code</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">code</span><span class="p">)</span> <span class="k">if</span> <span class="p">(</span><span class="n">domain_part</span> <span class="ow">not</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">domain_whitelist</span> <span class="ow">and</span> <span class="ow">not</span> <span class="bp">self</span><span class="o">.</span><span class="n">validate_domain_part</span><span class="p">(</span><span class="n">domain_part</span><span class="p">)):</span> <span class="c1"># Try for possible IDN domain-part</span> <span class="k">try</span><span class="p">:</span> <span class="n">domain_part</span> <span class="o">=</span> <span class="n">domain_part</span><span class="o">.</span><span class="n">encode</span><span class="p">(</span><span class="s1">'idna'</span><span class="p">)</span><span class="o">.</span><span class="n">decode</span><span class="p">(</span><span class="s1">'ascii'</span><span class="p">)</span> <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">validate_domain_part</span><span class="p">(</span><span class="n">domain_part</span><span class="p">):</span> <span class="k">return</span> <span class="k">except</span> <span class="ne">UnicodeError</span><span class="p">:</span> <span class="k">pass</span> <span class="k">raise</span> <span class="n">ValidationError</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">message</span><span class="p">,</span> <span class="n">code</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">code</span><span class="p">)</span> <span class="k">def</span> <span class="nf">validate_domain_part</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">domain_part</span><span class="p">):</span> <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">domain_regex</span><span class="o">.</span><span class="n">match</span><span class="p">(</span><span class="n">domain_part</span><span class="p">):</span> <span class="k">return</span> <span class="kc">True</span> <span class="n">literal_match</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">literal_regex</span><span class="o">.</span><span class="n">match</span><span class="p">(</span><span class="n">domain_part</span><span class="p">)</span> <span class="k">if</span> <span class="n">literal_match</span><span class="p">:</span> <span class="n">ip_address</span> <span class="o">=</span> <span class="n">literal_match</span><span class="o">.</span><span class="n">group</span><span class="p">(</span><span class="mi">1</span><span class="p">)</span> <span class="k">try</span><span class="p">:</span> <span class="n">validate_ipv46_address</span><span class="p">(</span><span class="n">ip_address</span><span class="p">)</span> <span class="k">return</span> <span class="kc">True</span> <span class="k">except</span> <span class="n">ValidationError</span><span class="p">:</span> <span class="k">pass</span> <span class="k">return</span> <span class="kc">False</span> <span class="k">def</span> <span class="nf">__eq__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">other</span><span class="p">):</span> <span class="k">return</span> <span class="p">(</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">other</span><span class="p">,</span> <span class="n">EmailValidator</span><span class="p">)</span> <span class="ow">and</span> <span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">domain_whitelist</span> <span class="o">==</span> <span class="n">other</span><span class="o">.</span><span class="n">domain_whitelist</span><span class="p">)</span> <span class="ow">and</span> <span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">message</span> <span class="o">==</span> <span class="n">other</span><span class="o">.</span><span class="n">message</span><span class="p">)</span> <span class="ow">and</span> <span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">code</span> <span class="o">==</span> <span class="n">other</span><span class="o">.</span><span class="n">code</span><span class="p">)</span> <span class="p">)</span></div> <span class="n">validate_email</span> <span class="o">=</span> <span class="n">EmailValidator</span><span class="p">()</span> <span class="n">slug_re</span> <span class="o">=</span> <span class="n">_lazy_re_compile</span><span class="p">(</span><span class="sa">r</span><span class="s1">'^[-a-zA-Z0-9_]+\Z'</span><span class="p">)</span> <span class="n">validate_slug</span> <span class="o">=</span> <span class="n">RegexValidator</span><span class="p">(</span> <span class="n">slug_re</span><span class="p">,</span> <span class="n">_</span><span class="p">(</span><span class="s2">"Enter a valid 'slug' consisting of letters, numbers, underscores or hyphens."</span><span class="p">),</span> <span class="s1">'invalid'</span> <span class="p">)</span> <span class="n">slug_unicode_re</span> <span class="o">=</span> <span class="n">_lazy_re_compile</span><span class="p">(</span><span class="sa">r</span><span class="s1">'^[-\w]+\Z'</span><span class="p">,</span> <span class="n">re</span><span class="o">.</span><span class="n">U</span><span class="p">)</span> <span class="n">validate_unicode_slug</span> <span class="o">=</span> <span class="n">RegexValidator</span><span class="p">(</span> <span class="n">slug_unicode_re</span><span class="p">,</span> <span class="n">_</span><span class="p">(</span><span class="s2">"Enter a valid 'slug' consisting of Unicode letters, numbers, underscores, or hyphens."</span><span class="p">),</span> <span class="s1">'invalid'</span> <span class="p">)</span> <span class="n">ipv4_re</span> <span class="o">=</span> <span class="n">_lazy_re_compile</span><span class="p">(</span><span class="sa">r</span><span class="s1">'^(25[0-5]|2[0-4][0-9]|[0-1]?[0-9]?[0-9])(\.(25[0-5]|2[0-4][0-9]|[0-1]?[0-9]?[0-9]))</span><span class="si">{3}</span><span class="s1">\Z'</span><span class="p">)</span> <span class="n">validate_ipv4_address</span> <span class="o">=</span> <span class="n">RegexValidator</span><span class="p">(</span><span class="n">ipv4_re</span><span class="p">,</span> <span class="n">_</span><span class="p">(</span><span class="s1">'Enter a valid IPv4 address.'</span><span class="p">),</span> <span class="s1">'invalid'</span><span class="p">)</span> <div class="viewcode-block" id="validate_ipv6_address"><a class="viewcode-back" href="../../../ref/validators.html#django.core.validators.validate_ipv6_address">[docs]</a><span class="k">def</span> <span class="nf">validate_ipv6_address</span><span class="p">(</span><span class="n">value</span><span class="p">):</span> <span class="k">if</span> <span class="ow">not</span> <span class="n">is_valid_ipv6_address</span><span class="p">(</span><span class="n">value</span><span class="p">):</span> <span class="k">raise</span> <span class="n">ValidationError</span><span class="p">(</span><span class="n">_</span><span class="p">(</span><span class="s1">'Enter a valid IPv6 address.'</span><span class="p">),</span> <span class="n">code</span><span class="o">=</span><span class="s1">'invalid'</span><span class="p">)</span></div> <div class="viewcode-block" id="validate_ipv46_address"><a class="viewcode-back" href="../../../ref/validators.html#django.core.validators.validate_ipv46_address">[docs]</a><span class="k">def</span> <span class="nf">validate_ipv46_address</span><span class="p">(</span><span class="n">value</span><span class="p">):</span> <span class="k">try</span><span class="p">:</span> <span class="n">validate_ipv4_address</span><span class="p">(</span><span class="n">value</span><span class="p">)</span> <span class="k">except</span> <span class="n">ValidationError</span><span class="p">:</span> <span class="k">try</span><span class="p">:</span> <span class="n">validate_ipv6_address</span><span class="p">(</span><span class="n">value</span><span class="p">)</span> <span class="k">except</span> <span class="n">ValidationError</span><span class="p">:</span> <span class="k">raise</span> <span class="n">ValidationError</span><span class="p">(</span><span class="n">_</span><span class="p">(</span><span class="s1">'Enter a valid IPv4 or IPv6 address.'</span><span class="p">),</span> <span class="n">code</span><span class="o">=</span><span class="s1">'invalid'</span><span class="p">)</span></div> <span class="n">ip_address_validator_map</span> <span class="o">=</span> <span class="p">{</span> <span class="s1">'both'</span><span class="p">:</span> <span class="p">([</span><span class="n">validate_ipv46_address</span><span class="p">],</span> <span class="n">_</span><span class="p">(</span><span class="s1">'Enter a valid IPv4 or IPv6 address.'</span><span class="p">)),</span> <span class="s1">'ipv4'</span><span class="p">:</span> <span class="p">([</span><span class="n">validate_ipv4_address</span><span class="p">],</span> <span class="n">_</span><span class="p">(</span><span class="s1">'Enter a valid IPv4 address.'</span><span class="p">)),</span> <span class="s1">'ipv6'</span><span class="p">:</span> <span class="p">([</span><span class="n">validate_ipv6_address</span><span class="p">],</span> <span class="n">_</span><span class="p">(</span><span class="s1">'Enter a valid IPv6 address.'</span><span class="p">)),</span> <span class="p">}</span> <span class="k">def</span> <span class="nf">ip_address_validators</span><span class="p">(</span><span class="n">protocol</span><span class="p">,</span> <span class="n">unpack_ipv4</span><span class="p">):</span> <span class="sd">"""</span> <span class="sd"> Depending on the given parameters returns the appropriate validators for</span> <span class="sd"> the GenericIPAddressField.</span> <span class="sd"> This code is here, because it is exactly the same for the model and the form field.</span> <span class="sd"> """</span> <span class="k">if</span> <span class="n">protocol</span> <span class="o">!=</span> <span class="s1">'both'</span> <span class="ow">and</span> <span class="n">unpack_ipv4</span><span class="p">:</span> <span class="k">raise</span> <span class="ne">ValueError</span><span class="p">(</span> <span class="s2">"You can only use `unpack_ipv4` if `protocol` is set to 'both'"</span><span class="p">)</span> <span class="k">try</span><span class="p">:</span> <span class="k">return</span> <span class="n">ip_address_validator_map</span><span class="p">[</span><span class="n">protocol</span><span class="o">.</span><span class="n">lower</span><span class="p">()]</span> <span class="k">except</span> <span class="ne">KeyError</span><span class="p">:</span> <span class="k">raise</span> <span class="ne">ValueError</span><span class="p">(</span><span class="s2">"The protocol '</span><span class="si">%s</span><span class="s2">' is unknown. Supported: </span><span class="si">%s</span><span class="s2">"</span> <span class="o">%</span> <span class="p">(</span><span class="n">protocol</span><span class="p">,</span> <span class="nb">list</span><span class="p">(</span><span class="n">ip_address_validator_map</span><span class="p">)))</span> <div class="viewcode-block" id="int_list_validator"><a class="viewcode-back" href="../../../ref/validators.html#django.core.validators.int_list_validator">[docs]</a><span class="k">def</span> <span class="nf">int_list_validator</span><span class="p">(</span><span class="n">sep</span><span class="o">=</span><span class="s1">','</span><span class="p">,</span> <span class="n">message</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> <span class="n">code</span><span class="o">=</span><span class="s1">'invalid'</span><span class="p">,</span> <span class="n">allow_negative</span><span class="o">=</span><span class="kc">False</span><span class="p">):</span> <span class="n">regexp</span> <span class="o">=</span> <span class="n">_lazy_re_compile</span><span class="p">(</span><span class="sa">r</span><span class="s1">'^</span><span class="si">%(neg)s</span><span class="s1">\d+(?:</span><span class="si">%(sep)s%(neg)s</span><span class="s1">\d+)*\Z'</span> <span class="o">%</span> <span class="p">{</span> <span class="s1">'neg'</span><span class="p">:</span> <span class="s1">'(-)?'</span> <span class="k">if</span> <span class="n">allow_negative</span> <span class="k">else</span> <span class="s1">''</span><span class="p">,</span> <span class="s1">'sep'</span><span class="p">:</span> <span class="n">re</span><span class="o">.</span><span class="n">escape</span><span class="p">(</span><span class="n">sep</span><span class="p">),</span> <span class="p">})</span> <span class="k">return</span> <span class="n">RegexValidator</span><span class="p">(</span><span class="n">regexp</span><span class="p">,</span> <span class="n">message</span><span class="o">=</span><span class="n">message</span><span class="p">,</span> <span class="n">code</span><span class="o">=</span><span class="n">code</span><span class="p">)</span></div> <span class="n">validate_comma_separated_integer_list</span> <span class="o">=</span> <span class="n">int_list_validator</span><span class="p">(</span> <span class="n">message</span><span class="o">=</span><span class="n">_</span><span class="p">(</span><span class="s1">'Enter only digits separated by commas.'</span><span class="p">),</span> <span class="p">)</span> <span class="nd">@deconstructible</span> <span class="k">class</span> <span class="nc">BaseValidator</span><span class="p">(</span><span class="nb">object</span><span class="p">):</span> <span class="n">message</span> <span class="o">=</span> <span class="n">_</span><span class="p">(</span><span class="s1">'Ensure this value is </span><span class="si">%(limit_value)s</span><span class="s1"> (it is </span><span class="si">%(show_value)s</span><span class="s1">).'</span><span class="p">)</span> <span class="n">code</span> <span class="o">=</span> <span class="s1">'limit_value'</span> <span class="k">def</span> <span class="nf">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">limit_value</span><span class="p">,</span> <span class="n">message</span><span class="o">=</span><span class="kc">None</span><span class="p">):</span> <span class="bp">self</span><span class="o">.</span><span class="n">limit_value</span> <span class="o">=</span> <span class="n">limit_value</span> <span class="k">if</span> <span class="n">message</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">message</span> <span class="o">=</span> <span class="n">message</span> <span class="k">def</span> <span class="nf">__call__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">value</span><span class="p">):</span> <span class="n">cleaned</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">clean</span><span class="p">(</span><span class="n">value</span><span class="p">)</span> <span class="n">params</span> <span class="o">=</span> <span class="p">{</span><span class="s1">'limit_value'</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">limit_value</span><span class="p">,</span> <span class="s1">'show_value'</span><span class="p">:</span> <span class="n">cleaned</span><span class="p">,</span> <span class="s1">'value'</span><span class="p">:</span> <span class="n">value</span><span class="p">}</span> <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">compare</span><span class="p">(</span><span class="n">cleaned</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">limit_value</span><span class="p">):</span> <span class="k">raise</span> <span class="n">ValidationError</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">message</span><span class="p">,</span> <span class="n">code</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">code</span><span class="p">,</span> <span class="n">params</span><span class="o">=</span><span class="n">params</span><span class="p">)</span> <span class="k">def</span> <span class="nf">__eq__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">other</span><span class="p">):</span> <span class="k">return</span> <span class="p">(</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">other</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="vm">__class__</span><span class="p">)</span> <span class="ow">and</span> <span class="bp">self</span><span class="o">.</span><span class="n">limit_value</span> <span class="o">==</span> <span class="n">other</span><span class="o">.</span><span class="n">limit_value</span> <span class="ow">and</span> <span class="bp">self</span><span class="o">.</span><span class="n">message</span> <span class="o">==</span> <span class="n">other</span><span class="o">.</span><span class="n">message</span> <span class="ow">and</span> <span class="bp">self</span><span class="o">.</span><span class="n">code</span> <span class="o">==</span> <span class="n">other</span><span class="o">.</span><span class="n">code</span> <span class="p">)</span> <span class="k">def</span> <span class="nf">compare</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">a</span><span class="p">,</span> <span class="n">b</span><span class="p">):</span> <span class="k">return</span> <span class="n">a</span> <span class="ow">is</span> <span class="ow">not</span> <span class="n">b</span> <span class="k">def</span> <span class="nf">clean</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">x</span><span class="p">):</span> <span class="k">return</span> <span class="n">x</span> <div class="viewcode-block" id="MaxValueValidator"><a class="viewcode-back" href="../../../ref/validators.html#django.core.validators.MaxValueValidator">[docs]</a><span class="nd">@deconstructible</span> <span class="k">class</span> <span class="nc">MaxValueValidator</span><span class="p">(</span><span class="n">BaseValidator</span><span class="p">):</span> <span class="n">message</span> <span class="o">=</span> <span class="n">_</span><span class="p">(</span><span class="s1">'Ensure this value is less than or equal to </span><span class="si">%(limit_value)s</span><span class="s1">.'</span><span class="p">)</span> <span class="n">code</span> <span class="o">=</span> <span class="s1">'max_value'</span> <span class="k">def</span> <span class="nf">compare</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">a</span><span class="p">,</span> <span class="n">b</span><span class="p">):</span> <span class="k">return</span> <span class="n">a</span> <span class="o">></span> <span class="n">b</span></div> <div class="viewcode-block" id="MinValueValidator"><a class="viewcode-back" href="../../../ref/validators.html#django.core.validators.MinValueValidator">[docs]</a><span class="nd">@deconstructible</span> <span class="k">class</span> <span class="nc">MinValueValidator</span><span class="p">(</span><span class="n">BaseValidator</span><span class="p">):</span> <span class="n">message</span> <span class="o">=</span> <span class="n">_</span><span class="p">(</span><span class="s1">'Ensure this value is greater than or equal to </span><span class="si">%(limit_value)s</span><span class="s1">.'</span><span class="p">)</span> <span class="n">code</span> <span class="o">=</span> <span class="s1">'min_value'</span> <span class="k">def</span> <span class="nf">compare</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">a</span><span class="p">,</span> <span class="n">b</span><span class="p">):</span> <span class="k">return</span> <span class="n">a</span> <span class="o"><</span> <span class="n">b</span></div> <div class="viewcode-block" id="MinLengthValidator"><a class="viewcode-back" href="../../../ref/validators.html#django.core.validators.MinLengthValidator">[docs]</a><span class="nd">@deconstructible</span> <span class="k">class</span> <span class="nc">MinLengthValidator</span><span class="p">(</span><span class="n">BaseValidator</span><span class="p">):</span> <span class="n">message</span> <span class="o">=</span> <span class="n">ungettext_lazy</span><span class="p">(</span> <span class="s1">'Ensure this value has at least </span><span class="si">%(limit_value)d</span><span class="s1"> character (it has </span><span class="si">%(show_value)d</span><span class="s1">).'</span><span class="p">,</span> <span class="s1">'Ensure this value has at least </span><span class="si">%(limit_value)d</span><span class="s1"> characters (it has </span><span class="si">%(show_value)d</span><span class="s1">).'</span><span class="p">,</span> <span class="s1">'limit_value'</span><span class="p">)</span> <span class="n">code</span> <span class="o">=</span> <span class="s1">'min_length'</span> <span class="k">def</span> <span class="nf">compare</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">a</span><span class="p">,</span> <span class="n">b</span><span class="p">):</span> <span class="k">return</span> <span class="n">a</span> <span class="o"><</span> <span class="n">b</span> <span class="k">def</span> <span class="nf">clean</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">x</span><span class="p">):</span> <span class="k">return</span> <span class="nb">len</span><span class="p">(</span><span class="n">x</span><span class="p">)</span></div> <div class="viewcode-block" id="MaxLengthValidator"><a class="viewcode-back" href="../../../ref/validators.html#django.core.validators.MaxLengthValidator">[docs]</a><span class="nd">@deconstructible</span> <span class="k">class</span> <span class="nc">MaxLengthValidator</span><span class="p">(</span><span class="n">BaseValidator</span><span class="p">):</span> <span class="n">message</span> <span class="o">=</span> <span class="n">ungettext_lazy</span><span class="p">(</span> <span class="s1">'Ensure this value has at most </span><span class="si">%(limit_value)d</span><span class="s1"> character (it has </span><span class="si">%(show_value)d</span><span class="s1">).'</span><span class="p">,</span> <span class="s1">'Ensure this value has at most </span><span class="si">%(limit_value)d</span><span class="s1"> characters (it has </span><span class="si">%(show_value)d</span><span class="s1">).'</span><span class="p">,</span> <span class="s1">'limit_value'</span><span class="p">)</span> <span class="n">code</span> <span class="o">=</span> <span class="s1">'max_length'</span> <span class="k">def</span> <span class="nf">compare</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">a</span><span class="p">,</span> <span class="n">b</span><span class="p">):</span> <span class="k">return</span> <span class="n">a</span> <span class="o">></span> <span class="n">b</span> <span class="k">def</span> <span class="nf">clean</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">x</span><span class="p">):</span> <span class="k">return</span> <span class="nb">len</span><span class="p">(</span><span class="n">x</span><span class="p">)</span></div> <div class="viewcode-block" id="DecimalValidator"><a class="viewcode-back" href="../../../ref/validators.html#django.core.validators.DecimalValidator">[docs]</a><span class="nd">@deconstructible</span> <span class="k">class</span> <span class="nc">DecimalValidator</span><span class="p">(</span><span class="nb">object</span><span class="p">):</span> <span class="sd">"""</span> <span class="sd"> Validate that the input does not exceed the maximum number of digits</span> <span class="sd"> expected, otherwise raise ValidationError.</span> <span class="sd"> """</span> <span class="n">messages</span> <span class="o">=</span> <span class="p">{</span> <span class="s1">'max_digits'</span><span class="p">:</span> <span class="n">ungettext_lazy</span><span class="p">(</span> <span class="s1">'Ensure that there are no more than </span><span class="si">%(max)s</span><span class="s1"> digit in total.'</span><span class="p">,</span> <span class="s1">'Ensure that there are no more than </span><span class="si">%(max)s</span><span class="s1"> digits in total.'</span><span class="p">,</span> <span class="s1">'max'</span> <span class="p">),</span> <span class="s1">'max_decimal_places'</span><span class="p">:</span> <span class="n">ungettext_lazy</span><span class="p">(</span> <span class="s1">'Ensure that there are no more than </span><span class="si">%(max)s</span><span class="s1"> decimal place.'</span><span class="p">,</span> <span class="s1">'Ensure that there are no more than </span><span class="si">%(max)s</span><span class="s1"> decimal places.'</span><span class="p">,</span> <span class="s1">'max'</span> <span class="p">),</span> <span class="s1">'max_whole_digits'</span><span class="p">:</span> <span class="n">ungettext_lazy</span><span class="p">(</span> <span class="s1">'Ensure that there are no more than </span><span class="si">%(max)s</span><span class="s1"> digit before the decimal point.'</span><span class="p">,</span> <span class="s1">'Ensure that there are no more than </span><span class="si">%(max)s</span><span class="s1"> digits before the decimal point.'</span><span class="p">,</span> <span class="s1">'max'</span> <span class="p">),</span> <span class="p">}</span> <span class="k">def</span> <span class="nf">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">max_digits</span><span class="p">,</span> <span class="n">decimal_places</span><span class="p">):</span> <span class="bp">self</span><span class="o">.</span><span class="n">max_digits</span> <span class="o">=</span> <span class="n">max_digits</span> <span class="bp">self</span><span class="o">.</span><span class="n">decimal_places</span> <span class="o">=</span> <span class="n">decimal_places</span> <span class="k">def</span> <span class="nf">__call__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">value</span><span class="p">):</span> <span class="n">digit_tuple</span><span class="p">,</span> <span class="n">exponent</span> <span class="o">=</span> <span class="n">value</span><span class="o">.</span><span class="n">as_tuple</span><span class="p">()[</span><span class="mi">1</span><span class="p">:]</span> <span class="n">decimals</span> <span class="o">=</span> <span class="nb">abs</span><span class="p">(</span><span class="n">exponent</span><span class="p">)</span> <span class="c1"># digit_tuple doesn't include any leading zeros.</span> <span class="n">digits</span> <span class="o">=</span> <span class="nb">len</span><span class="p">(</span><span class="n">digit_tuple</span><span class="p">)</span> <span class="k">if</span> <span class="n">decimals</span> <span class="o">></span> <span class="n">digits</span><span class="p">:</span> <span class="c1"># We have leading zeros up to or past the decimal point. Count</span> <span class="c1"># everything past the decimal point as a digit. We do not count</span> <span class="c1"># 0 before the decimal point as a digit since that would mean</span> <span class="c1"># we would not allow max_digits = decimal_places.</span> <span class="n">digits</span> <span class="o">=</span> <span class="n">decimals</span> <span class="n">whole_digits</span> <span class="o">=</span> <span class="n">digits</span> <span class="o">-</span> <span class="n">decimals</span> <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">max_digits</span> <span class="ow">is</span> <span class="ow">not</span> <span class="kc">None</span> <span class="ow">and</span> <span class="n">digits</span> <span class="o">></span> <span class="bp">self</span><span class="o">.</span><span class="n">max_digits</span><span class="p">:</span> <span class="k">raise</span> <span class="n">ValidationError</span><span class="p">(</span> <span class="bp">self</span><span class="o">.</span><span class="n">messages</span><span class="p">[</span><span class="s1">'max_digits'</span><span class="p">],</span> <span class="n">code</span><span class="o">=</span><span class="s1">'max_digits'</span><span class="p">,</span> <span class="n">params</span><span class="o">=</span><span class="p">{</span><span class="s1">'max'</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">max_digits</span><span class="p">},</span> <span class="p">)</span> <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">decimal_places</span> <span class="ow">is</span> <span class="ow">not</span> <span class="kc">None</span> <span class="ow">and</span> <span class="n">decimals</span> <span class="o">></span> <span class="bp">self</span><span class="o">.</span><span class="n">decimal_places</span><span class="p">:</span> <span class="k">raise</span> <span class="n">ValidationError</span><span class="p">(</span> <span class="bp">self</span><span class="o">.</span><span class="n">messages</span><span class="p">[</span><span class="s1">'max_decimal_places'</span><span class="p">],</span> <span class="n">code</span><span class="o">=</span><span class="s1">'max_decimal_places'</span><span class="p">,</span> <span class="n">params</span><span class="o">=</span><span class="p">{</span><span class="s1">'max'</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">decimal_places</span><span class="p">},</span> <span class="p">)</span> <span class="k">if</span> <span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">max_digits</span> <span class="ow">is</span> <span class="ow">not</span> <span class="kc">None</span> <span class="ow">and</span> <span class="bp">self</span><span class="o">.</span><span class="n">decimal_places</span> <span class="ow">is</span> <span class="ow">not</span> <span class="kc">None</span> <span class="ow">and</span> <span class="n">whole_digits</span> <span class="o">></span> <span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">max_digits</span> <span class="o">-</span> <span class="bp">self</span><span class="o">.</span><span class="n">decimal_places</span><span class="p">)):</span> <span class="k">raise</span> <span class="n">ValidationError</span><span class="p">(</span> <span class="bp">self</span><span class="o">.</span><span class="n">messages</span><span class="p">[</span><span class="s1">'max_whole_digits'</span><span class="p">],</span> <span class="n">code</span><span class="o">=</span><span class="s1">'max_whole_digits'</span><span class="p">,</span> <span class="n">params</span><span class="o">=</span><span class="p">{</span><span class="s1">'max'</span><span class="p">:</span> <span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">max_digits</span> <span class="o">-</span> <span class="bp">self</span><span class="o">.</span><span class="n">decimal_places</span><span class="p">)},</span> <span class="p">)</span> <span class="k">def</span> <span class="nf">__eq__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">other</span><span class="p">):</span> <span class="k">return</span> <span class="p">(</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">other</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="vm">__class__</span><span class="p">)</span> <span class="ow">and</span> <span class="bp">self</span><span class="o">.</span><span class="n">max_digits</span> <span class="o">==</span> <span class="n">other</span><span class="o">.</span><span class="n">max_digits</span> <span class="ow">and</span> <span class="bp">self</span><span class="o">.</span><span class="n">decimal_places</span> <span class="o">==</span> <span class="n">other</span><span class="o">.</span><span class="n">decimal_places</span> <span class="p">)</span></div> <div class="viewcode-block" id="FileExtensionValidator"><a class="viewcode-back" href="../../../ref/validators.html#django.core.validators.FileExtensionValidator">[docs]</a><span class="nd">@deconstructible</span> <span class="k">class</span> <span class="nc">FileExtensionValidator</span><span class="p">(</span><span class="nb">object</span><span class="p">):</span> <span class="n">message</span> <span class="o">=</span> <span class="n">_</span><span class="p">(</span> <span class="s2">"File extension '</span><span class="si">%(extension)s</span><span class="s2">' is not allowed. "</span> <span class="s2">"Allowed extensions are: '</span><span class="si">%(allowed_extensions)s</span><span class="s2">'."</span> <span class="p">)</span> <span class="n">code</span> <span class="o">=</span> <span class="s1">'invalid_extension'</span> <span class="k">def</span> <span class="nf">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">allowed_extensions</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> <span class="n">message</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> <span class="n">code</span><span class="o">=</span><span class="kc">None</span><span class="p">):</span> <span class="bp">self</span><span class="o">.</span><span class="n">allowed_extensions</span> <span class="o">=</span> <span class="n">allowed_extensions</span> <span class="k">if</span> <span class="n">message</span> <span class="ow">is</span> <span class="ow">not</span> <span class="kc">None</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">message</span> <span class="o">=</span> <span class="n">message</span> <span class="k">if</span> <span class="n">code</span> <span class="ow">is</span> <span class="ow">not</span> <span class="kc">None</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">code</span> <span class="o">=</span> <span class="n">code</span> <span class="k">def</span> <span class="nf">__call__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">value</span><span class="p">):</span> <span class="n">extension</span> <span class="o">=</span> <span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">splitext</span><span class="p">(</span><span class="n">value</span><span class="o">.</span><span class="n">name</span><span class="p">)[</span><span class="mi">1</span><span class="p">][</span><span class="mi">1</span><span class="p">:]</span><span class="o">.</span><span class="n">lower</span><span class="p">()</span> <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">allowed_extensions</span> <span class="ow">is</span> <span class="ow">not</span> <span class="kc">None</span> <span class="ow">and</span> <span class="n">extension</span> <span class="ow">not</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">allowed_extensions</span><span class="p">:</span> <span class="k">raise</span> <span class="n">ValidationError</span><span class="p">(</span> <span class="bp">self</span><span class="o">.</span><span class="n">message</span><span class="p">,</span> <span class="n">code</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">code</span><span class="p">,</span> <span class="n">params</span><span class="o">=</span><span class="p">{</span> <span class="s1">'extension'</span><span class="p">:</span> <span class="n">extension</span><span class="p">,</span> <span class="s1">'allowed_extensions'</span><span class="p">:</span> <span class="s1">', '</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">allowed_extensions</span><span class="p">)</span> <span class="p">}</span> <span class="p">)</span> <span class="k">def</span> <span class="nf">__eq__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">other</span><span class="p">):</span> <span class="k">return</span> <span class="p">(</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">other</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="vm">__class__</span><span class="p">)</span> <span class="ow">and</span> <span class="bp">self</span><span class="o">.</span><span class="n">allowed_extensions</span> <span class="o">==</span> <span class="n">other</span><span class="o">.</span><span class="n">allowed_extensions</span> <span class="ow">and</span> <span class="bp">self</span><span class="o">.</span><span class="n">message</span> <span class="o">==</span> <span class="n">other</span><span class="o">.</span><span class="n">message</span> <span class="ow">and</span> <span class="bp">self</span><span class="o">.</span><span class="n">code</span> <span class="o">==</span> <span class="n">other</span><span class="o">.</span><span class="n">code</span> <span class="p">)</span></div> <span class="k">def</span> <span class="nf">get_available_image_extensions</span><span class="p">():</span> <span class="k">try</span><span class="p">:</span> <span class="kn">from</span> <span class="nn">PIL</span> <span class="k">import</span> <span class="n">Image</span> <span class="k">except</span> <span class="ne">ImportError</span><span class="p">:</span> <span class="k">return</span> <span class="p">[]</span> <span class="k">else</span><span class="p">:</span> <span class="n">Image</span><span class="o">.</span><span class="n">init</span><span class="p">()</span> <span class="k">return</span> <span class="p">[</span><span class="n">ext</span><span class="o">.</span><span class="n">lower</span><span class="p">()[</span><span class="mi">1</span><span class="p">:]</span> <span class="k">for</span> <span class="n">ext</span> <span class="ow">in</span> <span class="n">Image</span><span class="o">.</span><span class="n">EXTENSION</span><span class="o">.</span><span class="n">keys</span><span class="p">()]</span> <span class="n">validate_image_file_extension</span> <span class="o">=</span> <span class="n">FileExtensionValidator</span><span class="p">(</span> <span class="n">allowed_extensions</span><span class="o">=</span><span class="n">get_available_image_extensions</span><span class="p">(),</span> <span class="p">)</span> </pre></div> </div> </div> </div> <div class="yui-b" id="sidebar"> <div class="sphinxsidebar" role="navigation" aria-label="main navigation"> <div class="sphinxsidebarwrapper"> <div id="searchbox" style="display: none" role="search"> <h3>Quick search</h3> <div class="searchformwrapper"> <form class="search" action="../../../search.html" method="get"> <input type="text" name="q" /> <input type="submit" value="Go" /> <input type="hidden" name="check_keywords" value="yes" /> <input type="hidden" name="area" value="default" /> </form> </div> </div> <script type="text/javascript">$('#searchbox').show(0);</script> </div> </div> <h3>Last update:</h3> <p class="topless">Feb 11, 2019</p> </div> </div> <div id="ft"> <div class="nav"> <a href="../../index.html" title="Module code" accesskey="U">up</a></div> </div> </div> <div class="clearer"></div> </div> </body> </html>