<!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"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>Form handling with class-based views — Django 1.5.9 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"> var DOCUMENTATION_OPTIONS = { URL_ROOT: '../../', VERSION: '1.5.9', COLLAPSE_INDEX: false, FILE_SUFFIX: '.html', HAS_SOURCE: true }; </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> <link rel="top" title="Django 1.5.9 documentation" href="../../index.html" /> <link rel="up" title="Class-based views" href="index.html" /> <link rel="next" title="Using mixins with class-based views" href="mixins.html" /> <link rel="prev" title="Class-based generic views" href="generic-display.html" /> <script type="text/javascript" src="../../templatebuiltins.js"></script> <script type="text/javascript"> (function($) { if (!django_template_builtins) { // templatebuiltins.js missing, do nothing. return; } $(document).ready(function() { // Hyperlink Django template tags and filters var base = "../../ref/templates/builtins.html"; if (base == "#") { // Special case for builtins.html itself base = ""; } // Tags are keywords, class '.k' $("div.highlight\\-html\\+django span.k").each(function(i, elem) { var tagname = $(elem).text(); if ($.inArray(tagname, django_template_builtins.ttags) != -1) { var fragment = tagname.replace(/_/, '-'); $(elem).html("<a href='" + base + "#" + fragment + "'>" + tagname + "</a>"); } }); // Filters are functions, class '.nf' $("div.highlight\\-html\\+django span.nf").each(function(i, elem) { var filtername = $(elem).text(); if ($.inArray(filtername, django_template_builtins.tfilters) != -1) { var fragment = filtername.replace(/_/, '-'); $(elem).html("<a href='" + base + "#" + fragment + "'>" + filtername + "</a>"); } }); }); })(jQuery); </script> </head> <body> <div class="document"> <div id="custom-doc" class="yui-t6"> <div id="hd"> <h1><a href="../../index.html">Django 1.5.9 documentation</a></h1> <div id="global-nav"> <a title="Home page" href="../../index.html">Home</a> | <a title="Table of contents" href="../../contents.html">Table of contents</a> | <a title="Global index" href="../../genindex.html">Index</a> | <a title="Module index" href="../../py-modindex.html">Modules</a> </div> <div class="nav"> « <a href="generic-display.html" title="Class-based generic views">previous</a> | <a href="../index.html" title="Using Django" accesskey="U">up</a> | <a href="mixins.html" title="Using mixins with class-based views">next</a> »</div> </div> <div id="bd"> <div id="yui-main"> <div class="yui-b"> <div class="yui-g" id="topics-class-based-views-generic-editing"> <div class="section" id="s-form-handling-with-class-based-views"> <span id="form-handling-with-class-based-views"></span><h1>Form handling with class-based views<a class="headerlink" href="#form-handling-with-class-based-views" title="Permalink to this headline">¶</a></h1> <p>Form processing generally has 3 paths:</p> <ul class="simple"> <li>Initial GET (blank or prepopulated form)</li> <li>POST with invalid data (typically redisplay form with errors)</li> <li>POST with valid data (process the data and typically redirect)</li> </ul> <p>Implementing this yourself often results in a lot of repeated boilerplate code (see <a class="reference internal" href="../forms/index.html#using-a-form-in-a-view"><em>Using a form in a view</em></a>). To help avoid this, Django provides a collection of generic class-based views for form processing.</p> <div class="section" id="s-basic-forms"> <span id="basic-forms"></span><h2>Basic Forms<a class="headerlink" href="#basic-forms" title="Permalink to this headline">¶</a></h2> <p>Given a simple contact form:</p> <div class="highlight-python"><div class="highlight"><pre><span class="c"># forms.py</span> <span class="kn">from</span> <span class="nn">django</span> <span class="kn">import</span> <span class="n">forms</span> <span class="k">class</span> <span class="nc">ContactForm</span><span class="p">(</span><span class="n">forms</span><span class="o">.</span><span class="n">Form</span><span class="p">):</span> <span class="n">name</span> <span class="o">=</span> <span class="n">forms</span><span class="o">.</span><span class="n">CharField</span><span class="p">()</span> <span class="n">message</span> <span class="o">=</span> <span class="n">forms</span><span class="o">.</span><span class="n">CharField</span><span class="p">(</span><span class="n">widget</span><span class="o">=</span><span class="n">forms</span><span class="o">.</span><span class="n">Textarea</span><span class="p">)</span> <span class="k">def</span> <span class="nf">send_email</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> <span class="c"># send email using the self.cleaned_data dictionary</span> <span class="k">pass</span> </pre></div> </div> <p>The view can be constructed using a <tt class="docutils literal"><span class="pre">FormView</span></tt>:</p> <div class="highlight-python"><div class="highlight"><pre><span class="c"># views.py</span> <span class="kn">from</span> <span class="nn">myapp.forms</span> <span class="kn">import</span> <span class="n">ContactForm</span> <span class="kn">from</span> <span class="nn">django.views.generic.edit</span> <span class="kn">import</span> <span class="n">FormView</span> <span class="k">class</span> <span class="nc">ContactView</span><span class="p">(</span><span class="n">FormView</span><span class="p">):</span> <span class="n">template_name</span> <span class="o">=</span> <span class="s">'contact.html'</span> <span class="n">form_class</span> <span class="o">=</span> <span class="n">ContactForm</span> <span class="n">success_url</span> <span class="o">=</span> <span class="s">'/thanks/'</span> <span class="k">def</span> <span class="nf">form_valid</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">form</span><span class="p">):</span> <span class="c"># This method is called when valid form data has been POSTed.</span> <span class="c"># It should return an HttpResponse.</span> <span class="n">form</span><span class="o">.</span><span class="n">send_email</span><span class="p">()</span> <span class="k">return</span> <span class="nb">super</span><span class="p">(</span><span class="n">ContactView</span><span class="p">,</span> <span class="bp">self</span><span class="p">)</span><span class="o">.</span><span class="n">form_valid</span><span class="p">(</span><span class="n">form</span><span class="p">)</span> </pre></div> </div> <p>Notes:</p> <ul class="simple"> <li>FormView inherits <a class="reference internal" href="../../ref/class-based-views/mixins-simple.html#django.views.generic.base.TemplateResponseMixin" title="django.views.generic.base.TemplateResponseMixin"><tt class="xref py py-class docutils literal"><span class="pre">TemplateResponseMixin</span></tt></a> so <a class="reference internal" href="../../ref/class-based-views/mixins-simple.html#django.views.generic.base.TemplateResponseMixin.template_name" title="django.views.generic.base.TemplateResponseMixin.template_name"><tt class="xref py py-attr docutils literal"><span class="pre">template_name</span></tt></a> can be used here.</li> <li>The default implementation for <a class="reference internal" href="../../ref/class-based-views/mixins-editing.html#django.views.generic.edit.FormMixin.form_valid" title="django.views.generic.edit.FormMixin.form_valid"><tt class="xref py py-meth docutils literal"><span class="pre">form_valid()</span></tt></a> simply redirects to the <a class="reference internal" href="../../ref/class-based-views/mixins-editing.html#django.views.generic.edit.FormMixin.success_url" title="django.views.generic.edit.FormMixin.success_url"><tt class="xref py py-attr docutils literal"><span class="pre">success_url</span></tt></a>.</li> </ul> </div> <div class="section" id="s-model-forms"> <span id="model-forms"></span><h2>Model Forms<a class="headerlink" href="#model-forms" title="Permalink to this headline">¶</a></h2> <p>Generic views really shine when working with models. These generic views will automatically create a <a class="reference internal" href="../forms/modelforms.html#django.forms.ModelForm" title="django.forms.ModelForm"><tt class="xref py py-class docutils literal"><span class="pre">ModelForm</span></tt></a>, so long as they can work out which model class to use:</p> <ul class="simple"> <li>If the <a class="reference internal" href="../../ref/class-based-views/mixins-editing.html#django.views.generic.edit.ModelFormMixin.model" title="django.views.generic.edit.ModelFormMixin.model"><tt class="xref py py-attr docutils literal"><span class="pre">model</span></tt></a> attribute is given, that model class will be used.</li> <li>If <a class="reference internal" href="../../ref/class-based-views/mixins-single-object.html#django.views.generic.detail.SingleObjectMixin.get_object" title="django.views.generic.detail.SingleObjectMixin.get_object"><tt class="xref py py-meth docutils literal"><span class="pre">get_object()</span></tt></a> returns an object, the class of that object will be used.</li> <li>If a <a class="reference internal" href="../../ref/class-based-views/mixins-single-object.html#django.views.generic.detail.SingleObjectMixin.queryset" title="django.views.generic.detail.SingleObjectMixin.queryset"><tt class="xref py py-attr docutils literal"><span class="pre">queryset</span></tt></a> is given, the model for that queryset will be used.</li> </ul> <p>Model form views provide a <a class="reference internal" href="../../ref/class-based-views/mixins-editing.html#django.views.generic.edit.ModelFormMixin.form_valid" title="django.views.generic.edit.ModelFormMixin.form_valid"><tt class="xref py py-meth docutils literal"><span class="pre">form_valid()</span></tt></a> implementation that saves the model automatically. You can override this if you have any special requirements; see below for examples.</p> <p>You don’t even need to provide a <tt class="docutils literal"><span class="pre">success_url</span></tt> for <a class="reference internal" href="../../ref/class-based-views/generic-editing.html#django.views.generic.edit.CreateView" title="django.views.generic.edit.CreateView"><tt class="xref py py-class docutils literal"><span class="pre">CreateView</span></tt></a> or <a class="reference internal" href="../../ref/class-based-views/generic-editing.html#django.views.generic.edit.UpdateView" title="django.views.generic.edit.UpdateView"><tt class="xref py py-class docutils literal"><span class="pre">UpdateView</span></tt></a> - they will use <a class="reference internal" href="../../ref/models/instances.html#django.db.models.Model.get_absolute_url" title="django.db.models.Model.get_absolute_url"><tt class="xref py py-meth docutils literal"><span class="pre">get_absolute_url()</span></tt></a> on the model object if available.</p> <p>If you want to use a custom <a class="reference internal" href="../forms/modelforms.html#django.forms.ModelForm" title="django.forms.ModelForm"><tt class="xref py py-class docutils literal"><span class="pre">ModelForm</span></tt></a> (for instance to add extra validation) simply set <a class="reference internal" href="../../ref/class-based-views/mixins-editing.html#django.views.generic.edit.FormMixin.form_class" title="django.views.generic.edit.FormMixin.form_class"><tt class="xref py py-attr docutils literal"><span class="pre">form_class</span></tt></a> on your view.</p> <div class="admonition note"> <p class="first admonition-title">Note</p> <p class="last">When specifying a custom form class, you must still specify the model, even though the <a class="reference internal" href="../../ref/class-based-views/mixins-editing.html#django.views.generic.edit.FormMixin.form_class" title="django.views.generic.edit.FormMixin.form_class"><tt class="xref py py-attr docutils literal"><span class="pre">form_class</span></tt></a> may be a <a class="reference internal" href="../forms/modelforms.html#django.forms.ModelForm" title="django.forms.ModelForm"><tt class="xref py py-class docutils literal"><span class="pre">ModelForm</span></tt></a>.</p> </div> <p>First we need to add <a class="reference internal" href="../../ref/models/instances.html#django.db.models.Model.get_absolute_url" title="django.db.models.Model.get_absolute_url"><tt class="xref py py-meth docutils literal"><span class="pre">get_absolute_url()</span></tt></a> to our <tt class="docutils literal"><span class="pre">Author</span></tt> class:</p> <div class="highlight-python"><div class="highlight"><pre><span class="c"># models.py</span> <span class="kn">from</span> <span class="nn">django.core.urlresolvers</span> <span class="kn">import</span> <span class="n">reverse</span> <span class="kn">from</span> <span class="nn">django.db</span> <span class="kn">import</span> <span class="n">models</span> <span class="k">class</span> <span class="nc">Author</span><span class="p">(</span><span class="n">models</span><span class="o">.</span><span class="n">Model</span><span class="p">):</span> <span class="n">name</span> <span class="o">=</span> <span class="n">models</span><span class="o">.</span><span class="n">CharField</span><span class="p">(</span><span class="n">max_length</span><span class="o">=</span><span class="mi">200</span><span class="p">)</span> <span class="k">def</span> <span class="nf">get_absolute_url</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> <span class="k">return</span> <span class="n">reverse</span><span class="p">(</span><span class="s">'author-detail'</span><span class="p">,</span> <span class="n">kwargs</span><span class="o">=</span><span class="p">{</span><span class="s">'pk'</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">pk</span><span class="p">})</span> </pre></div> </div> <p>Then we can use <a class="reference internal" href="../../ref/class-based-views/flattened-index.html#CreateView" title="CreateView"><tt class="xref py py-class docutils literal"><span class="pre">CreateView</span></tt></a> and friends to do the actual work. Notice how we’re just configuring the generic class-based views here; we don’t have to write any logic ourselves:</p> <div class="highlight-python"><div class="highlight"><pre><span class="c"># views.py</span> <span class="kn">from</span> <span class="nn">django.views.generic.edit</span> <span class="kn">import</span> <span class="n">CreateView</span><span class="p">,</span> <span class="n">UpdateView</span><span class="p">,</span> <span class="n">DeleteView</span> <span class="kn">from</span> <span class="nn">django.core.urlresolvers</span> <span class="kn">import</span> <span class="n">reverse_lazy</span> <span class="kn">from</span> <span class="nn">myapp.models</span> <span class="kn">import</span> <span class="n">Author</span> <span class="k">class</span> <span class="nc">AuthorCreate</span><span class="p">(</span><span class="n">CreateView</span><span class="p">):</span> <span class="n">model</span> <span class="o">=</span> <span class="n">Author</span> <span class="k">class</span> <span class="nc">AuthorUpdate</span><span class="p">(</span><span class="n">UpdateView</span><span class="p">):</span> <span class="n">model</span> <span class="o">=</span> <span class="n">Author</span> <span class="k">class</span> <span class="nc">AuthorDelete</span><span class="p">(</span><span class="n">DeleteView</span><span class="p">):</span> <span class="n">model</span> <span class="o">=</span> <span class="n">Author</span> <span class="n">success_url</span> <span class="o">=</span> <span class="n">reverse_lazy</span><span class="p">(</span><span class="s">'author-list'</span><span class="p">)</span> </pre></div> </div> <div class="admonition note"> <p class="first admonition-title">Note</p> <p class="last">We have to use <a class="reference internal" href="../../ref/urlresolvers.html#django.core.urlresolvers.reverse_lazy" title="django.core.urlresolvers.reverse_lazy"><tt class="xref py py-func docutils literal"><span class="pre">reverse_lazy()</span></tt></a> here, not just <tt class="docutils literal"><span class="pre">reverse</span></tt> as the urls are not loaded when the file is imported.</p> </div> <p>Finally, we hook these new views into the URLconf:</p> <div class="highlight-python"><div class="highlight"><pre><span class="c"># urls.py</span> <span class="kn">from</span> <span class="nn">django.conf.urls</span> <span class="kn">import</span> <span class="n">patterns</span><span class="p">,</span> <span class="n">url</span> <span class="kn">from</span> <span class="nn">myapp.views</span> <span class="kn">import</span> <span class="n">AuthorCreate</span><span class="p">,</span> <span class="n">AuthorUpdate</span><span class="p">,</span> <span class="n">AuthorDelete</span> <span class="n">urlpatterns</span> <span class="o">=</span> <span class="n">patterns</span><span class="p">(</span><span class="s">''</span><span class="p">,</span> <span class="c"># ...</span> <span class="n">url</span><span class="p">(</span><span class="s">r'author/add/$'</span><span class="p">,</span> <span class="n">AuthorCreate</span><span class="o">.</span><span class="n">as_view</span><span class="p">(),</span> <span class="n">name</span><span class="o">=</span><span class="s">'author_add'</span><span class="p">),</span> <span class="n">url</span><span class="p">(</span><span class="s">r'author/(?P<pk>\d+)/$'</span><span class="p">,</span> <span class="n">AuthorUpdate</span><span class="o">.</span><span class="n">as_view</span><span class="p">(),</span> <span class="n">name</span><span class="o">=</span><span class="s">'author_update'</span><span class="p">),</span> <span class="n">url</span><span class="p">(</span><span class="s">r'author/(?P<pk>\d+)/delete/$'</span><span class="p">,</span> <span class="n">AuthorDelete</span><span class="o">.</span><span class="n">as_view</span><span class="p">(),</span> <span class="n">name</span><span class="o">=</span><span class="s">'author_delete'</span><span class="p">),</span> <span class="p">)</span> </pre></div> </div> <div class="admonition note"> <p class="first admonition-title">Note</p> <p>These views inherit <a class="reference internal" href="../../ref/class-based-views/mixins-single-object.html#django.views.generic.detail.SingleObjectTemplateResponseMixin" title="django.views.generic.detail.SingleObjectTemplateResponseMixin"><tt class="xref py py-class docutils literal"><span class="pre">SingleObjectTemplateResponseMixin</span></tt></a> which uses <a class="reference internal" href="../../ref/class-based-views/mixins-single-object.html#django.views.generic.detail.SingleObjectTemplateResponseMixin.template_name_suffix" title="django.views.generic.detail.SingleObjectTemplateResponseMixin.template_name_suffix"><tt class="xref py py-attr docutils literal"><span class="pre">template_name_suffix</span></tt></a> to construct the <a class="reference internal" href="../../ref/class-based-views/mixins-simple.html#django.views.generic.base.TemplateResponseMixin.template_name" title="django.views.generic.base.TemplateResponseMixin.template_name"><tt class="xref py py-attr docutils literal"><span class="pre">template_name</span></tt></a> based on the model.</p> <p>In this example:</p> <ul class="simple"> <li><a class="reference internal" href="../../ref/class-based-views/flattened-index.html#CreateView" title="CreateView"><tt class="xref py py-class docutils literal"><span class="pre">CreateView</span></tt></a> and <a class="reference internal" href="../../ref/class-based-views/flattened-index.html#UpdateView" title="UpdateView"><tt class="xref py py-class docutils literal"><span class="pre">UpdateView</span></tt></a> use <tt class="docutils literal"><span class="pre">myapp/author_form.html</span></tt></li> <li><a class="reference internal" href="../../ref/class-based-views/flattened-index.html#DeleteView" title="DeleteView"><tt class="xref py py-class docutils literal"><span class="pre">DeleteView</span></tt></a> uses <tt class="docutils literal"><span class="pre">myapp/author_confirm_delete.html</span></tt></li> </ul> <p class="last">If you wish to have separate templates for <a class="reference internal" href="../../ref/class-based-views/flattened-index.html#CreateView" title="CreateView"><tt class="xref py py-class docutils literal"><span class="pre">CreateView</span></tt></a> and <a class="reference internal" href="../../ref/class-based-views/flattened-index.html#UpdateView" title="UpdateView"><tt class="xref py py-class docutils literal"><span class="pre">UpdateView</span></tt></a>, you can set either <a class="reference internal" href="../../ref/class-based-views/mixins-simple.html#django.views.generic.base.TemplateResponseMixin.template_name" title="django.views.generic.base.TemplateResponseMixin.template_name"><tt class="xref py py-attr docutils literal"><span class="pre">template_name</span></tt></a> or <a class="reference internal" href="../../ref/class-based-views/mixins-single-object.html#django.views.generic.detail.SingleObjectTemplateResponseMixin.template_name_suffix" title="django.views.generic.detail.SingleObjectTemplateResponseMixin.template_name_suffix"><tt class="xref py py-attr docutils literal"><span class="pre">template_name_suffix</span></tt></a> on your view class.</p> </div> </div> <div class="section" id="s-models-and-request-user"> <span id="models-and-request-user"></span><h2>Models and request.user<a class="headerlink" href="#models-and-request-user" title="Permalink to this headline">¶</a></h2> <p>To track the user that created an object using a <a class="reference internal" href="../../ref/class-based-views/flattened-index.html#CreateView" title="CreateView"><tt class="xref py py-class docutils literal"><span class="pre">CreateView</span></tt></a>, you can use a custom <a class="reference internal" href="../forms/modelforms.html#django.forms.ModelForm" title="django.forms.ModelForm"><tt class="xref py py-class docutils literal"><span class="pre">ModelForm</span></tt></a> to do this. First, add the foreign key relation to the model:</p> <div class="highlight-python"><div class="highlight"><pre><span class="c"># models.py</span> <span class="kn">from</span> <span class="nn">django.contrib.auth.models</span> <span class="kn">import</span> <span class="n">User</span> <span class="kn">from</span> <span class="nn">django.db</span> <span class="kn">import</span> <span class="n">models</span> <span class="k">class</span> <span class="nc">Author</span><span class="p">(</span><span class="n">models</span><span class="o">.</span><span class="n">Model</span><span class="p">):</span> <span class="n">name</span> <span class="o">=</span> <span class="n">models</span><span class="o">.</span><span class="n">CharField</span><span class="p">(</span><span class="n">max_length</span><span class="o">=</span><span class="mi">200</span><span class="p">)</span> <span class="n">created_by</span> <span class="o">=</span> <span class="n">models</span><span class="o">.</span><span class="n">ForeignKey</span><span class="p">(</span><span class="n">User</span><span class="p">)</span> <span class="c"># ...</span> </pre></div> </div> <p>Create a custom <a class="reference internal" href="../forms/modelforms.html#django.forms.ModelForm" title="django.forms.ModelForm"><tt class="xref py py-class docutils literal"><span class="pre">ModelForm</span></tt></a> in order to exclude the <tt class="docutils literal"><span class="pre">created_by</span></tt> field and prevent the user from editing it:</p> <div class="highlight-python"><div class="highlight"><pre><span class="c"># forms.py</span> <span class="kn">from</span> <span class="nn">django</span> <span class="kn">import</span> <span class="n">forms</span> <span class="kn">from</span> <span class="nn">myapp.models</span> <span class="kn">import</span> <span class="n">Author</span> <span class="k">class</span> <span class="nc">AuthorForm</span><span class="p">(</span><span class="n">forms</span><span class="o">.</span><span class="n">ModelForm</span><span class="p">):</span> <span class="k">class</span> <span class="nc">Meta</span><span class="p">:</span> <span class="n">model</span> <span class="o">=</span> <span class="n">Author</span> <span class="n">exclude</span> <span class="o">=</span> <span class="p">(</span><span class="s">'created_by'</span><span class="p">,)</span> </pre></div> </div> <p>In the view, use the custom <a class="reference internal" href="../../ref/class-based-views/mixins-editing.html#django.views.generic.edit.FormMixin.form_class" title="django.views.generic.edit.FormMixin.form_class"><tt class="xref py py-attr docutils literal"><span class="pre">form_class</span></tt></a> and override <a class="reference internal" href="../../ref/class-based-views/mixins-editing.html#django.views.generic.edit.ModelFormMixin.form_valid" title="django.views.generic.edit.ModelFormMixin.form_valid"><tt class="xref py py-meth docutils literal"><span class="pre">form_valid()</span></tt></a> to add the user:</p> <div class="highlight-python"><div class="highlight"><pre><span class="c"># views.py</span> <span class="kn">from</span> <span class="nn">django.views.generic.edit</span> <span class="kn">import</span> <span class="n">CreateView</span> <span class="kn">from</span> <span class="nn">myapp.models</span> <span class="kn">import</span> <span class="n">Author</span> <span class="kn">from</span> <span class="nn">myapp.forms</span> <span class="kn">import</span> <span class="n">AuthorForm</span> <span class="k">class</span> <span class="nc">AuthorCreate</span><span class="p">(</span><span class="n">CreateView</span><span class="p">):</span> <span class="n">form_class</span> <span class="o">=</span> <span class="n">AuthorForm</span> <span class="n">model</span> <span class="o">=</span> <span class="n">Author</span> <span class="k">def</span> <span class="nf">form_valid</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">form</span><span class="p">):</span> <span class="n">form</span><span class="o">.</span><span class="n">instance</span><span class="o">.</span><span class="n">created_by</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">request</span><span class="o">.</span><span class="n">user</span> <span class="k">return</span> <span class="nb">super</span><span class="p">(</span><span class="n">AuthorCreate</span><span class="p">,</span> <span class="bp">self</span><span class="p">)</span><span class="o">.</span><span class="n">form_valid</span><span class="p">(</span><span class="n">form</span><span class="p">)</span> </pre></div> </div> <p>Note that you’ll need to <a class="reference internal" href="intro.html#id1"><em>decorate this view</em></a> using <a class="reference internal" href="../auth/default.html#django.contrib.auth.decorators.login_required" title="django.contrib.auth.decorators.login_required"><tt class="xref py py-func docutils literal"><span class="pre">login_required()</span></tt></a>, or alternatively handle unauthorized users in the <a class="reference internal" href="../../ref/class-based-views/mixins-editing.html#django.views.generic.edit.ModelFormMixin.form_valid" title="django.views.generic.edit.ModelFormMixin.form_valid"><tt class="xref py py-meth docutils literal"><span class="pre">form_valid()</span></tt></a>.</p> </div> <div class="section" id="s-ajax-example"> <span id="ajax-example"></span><h2>AJAX example<a class="headerlink" href="#ajax-example" title="Permalink to this headline">¶</a></h2> <p>Here is a simple example showing how you might go about implementing a form that works for AJAX requests as well as ‘normal’ form POSTs:</p> <div class="highlight-python"><div class="highlight"><pre><span class="kn">import</span> <span class="nn">json</span> <span class="kn">from</span> <span class="nn">django.http</span> <span class="kn">import</span> <span class="n">HttpResponse</span> <span class="kn">from</span> <span class="nn">django.views.generic.edit</span> <span class="kn">import</span> <span class="n">CreateView</span> <span class="k">class</span> <span class="nc">AjaxableResponseMixin</span><span class="p">(</span><span class="nb">object</span><span class="p">):</span> <span class="sd">"""</span> <span class="sd"> Mixin to add AJAX support to a form.</span> <span class="sd"> Must be used with an object-based FormView (e.g. CreateView)</span> <span class="sd"> """</span> <span class="k">def</span> <span class="nf">render_to_json_response</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">context</span><span class="p">,</span> <span class="o">**</span><span class="n">response_kwargs</span><span class="p">):</span> <span class="n">data</span> <span class="o">=</span> <span class="n">json</span><span class="o">.</span><span class="n">dumps</span><span class="p">(</span><span class="n">context</span><span class="p">)</span> <span class="n">response_kwargs</span><span class="p">[</span><span class="s">'content_type'</span><span class="p">]</span> <span class="o">=</span> <span class="s">'application/json'</span> <span class="k">return</span> <span class="n">HttpResponse</span><span class="p">(</span><span class="n">data</span><span class="p">,</span> <span class="o">**</span><span class="n">response_kwargs</span><span class="p">)</span> <span class="k">def</span> <span class="nf">form_invalid</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">form</span><span class="p">):</span> <span class="n">response</span> <span class="o">=</span> <span class="nb">super</span><span class="p">(</span><span class="n">AjaxableResponseMixin</span><span class="p">,</span> <span class="bp">self</span><span class="p">)</span><span class="o">.</span><span class="n">form_invalid</span><span class="p">(</span><span class="n">form</span><span class="p">)</span> <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">request</span><span class="o">.</span><span class="n">is_ajax</span><span class="p">():</span> <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">render_to_json_response</span><span class="p">(</span><span class="n">form</span><span class="o">.</span><span class="n">errors</span><span class="p">,</span> <span class="n">status</span><span class="o">=</span><span class="mi">400</span><span class="p">)</span> <span class="k">else</span><span class="p">:</span> <span class="k">return</span> <span class="n">response</span> <span class="k">def</span> <span class="nf">form_valid</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">form</span><span class="p">):</span> <span class="c"># We make sure to call the parent's form_valid() method because</span> <span class="c"># it might do some processing (in the case of CreateView, it will</span> <span class="c"># call form.save() for example).</span> <span class="n">response</span> <span class="o">=</span> <span class="nb">super</span><span class="p">(</span><span class="n">AjaxableResponseMixin</span><span class="p">,</span> <span class="bp">self</span><span class="p">)</span><span class="o">.</span><span class="n">form_valid</span><span class="p">(</span><span class="n">form</span><span class="p">)</span> <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">request</span><span class="o">.</span><span class="n">is_ajax</span><span class="p">():</span> <span class="n">data</span> <span class="o">=</span> <span class="p">{</span> <span class="s">'pk'</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">object</span><span class="o">.</span><span class="n">pk</span><span class="p">,</span> <span class="p">}</span> <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">render_to_json_response</span><span class="p">(</span><span class="n">data</span><span class="p">)</span> <span class="k">else</span><span class="p">:</span> <span class="k">return</span> <span class="n">response</span> <span class="k">class</span> <span class="nc">AuthorCreate</span><span class="p">(</span><span class="n">AjaxableResponseMixin</span><span class="p">,</span> <span class="n">CreateView</span><span class="p">):</span> <span class="n">model</span> <span class="o">=</span> <span class="n">Author</span> </pre></div> </div> </div> </div> </div> </div> </div> <div class="yui-b" id="sidebar"> <div class="sphinxsidebar"> <div class="sphinxsidebarwrapper"> <h3><a href="../../contents.html">Table Of Contents</a></h3> <ul> <li><a class="reference internal" href="#">Form handling with class-based views</a><ul> <li><a class="reference internal" href="#basic-forms">Basic Forms</a></li> <li><a class="reference internal" href="#model-forms">Model Forms</a></li> <li><a class="reference internal" href="#models-and-request-user">Models and request.user</a></li> <li><a class="reference internal" href="#ajax-example">AJAX example</a></li> </ul> </li> </ul> <h3>Browse</h3> <ul> <li>Prev: <a href="generic-display.html">Class-based generic views</a></li> <li>Next: <a href="mixins.html">Using mixins with class-based views</a></li> </ul> <h3>You are here:</h3> <ul> <li> <a href="../../index.html">Django 1.5.9 documentation</a> <ul><li><a href="../index.html">Using Django</a> <ul><li><a href="index.html">Class-based views</a> <ul><li>Form handling with class-based views</li></ul> </li></ul></li></ul> </li> </ul> <h3>This Page</h3> <ul class="this-page-menu"> <li><a href="../../_sources/topics/class-based-views/generic-editing.txt" rel="nofollow">Show Source</a></li> </ul> <div id="searchbox" style="display: none"> <h3>Quick search</h3> 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