<!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>Django internals — Django 1.5.8 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: '1.5.8', 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 1.5.8 documentation" href="../index.html" /> <link rel="next" title="Contributing to Django" href="contributing/index.html" /> <link rel="prev" title="Django 1.0 alpha release notes" href="../releases/1.0-alpha-1.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 1.5.8 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="../releases/1.0-alpha-1.html" title="Django 1.0 alpha release notes">previous</a> | <a title="Django 1.5.8 documentation" href="../index.html" accesskey="U">up</a> | <a href="contributing/index.html" title="Contributing to Django">next</a> »</div> </div> <div id="bd"> <div id="yui-main"> <div class="yui-b"> <div class="yui-g" id="internals-index"> <div class="section" id="s-django-internals"> <span id="django-internals"></span><h1>Django internals<a class="headerlink" href="#django-internals" title="Permalink to this headline">ΒΆ</a></h1> <p>Documentation for people hacking on Django itself. This is the place to go if you’d like to help improve Django, learn or learn about how Django works “under the hood”.</p> <div class="admonition warning"> <p class="first admonition-title">Warning</p> <p class="last">Elsewhere in the Django documentation, coverage of a feature is a sort of a contract: once an API is in the official documentation, we consider it “stable” and don’t change it without a good reason. APIs covered here, however, are considered “internal-only”: we reserve the right to change these internals if we must.</p> </div> <div class="toctree-wrapper compound"> <ul> <li class="toctree-l1"><a class="reference internal" href="contributing/index.html">Contributing to Django</a><ul> <li class="toctree-l2"><a class="reference internal" href="contributing/new-contributors.html">Advice for new contributors</a></li> <li class="toctree-l2"><a class="reference internal" href="contributing/bugs-and-features.html">Reporting bugs and requesting features</a></li> <li class="toctree-l2"><a class="reference internal" href="contributing/triaging-tickets.html">Triaging tickets</a></li> <li class="toctree-l2"><a class="reference internal" href="contributing/writing-code/index.html">Writing code</a></li> <li class="toctree-l2"><a class="reference internal" href="contributing/writing-documentation.html">Writing documentation</a></li> <li class="toctree-l2"><a class="reference internal" 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href="security.html#supported-versions">Supported versions</a></li> <li class="toctree-l2"><a class="reference internal" href="security.html#how-django-discloses-security-issues">How Django discloses security issues</a></li> <li class="toctree-l2"><a class="reference internal" href="security.html#who-receives-advance-notification">Who receives advance notification</a></li> <li class="toctree-l2"><a class="reference internal" href="security.html#requesting-notifications">Requesting notifications</a></li> </ul> </li> <li class="toctree-l1"><a class="reference internal" href="release-process.html">Django’s release process</a><ul> <li class="toctree-l2"><a class="reference internal" href="release-process.html#official-releases">Official releases</a></li> <li class="toctree-l2"><a class="reference internal" href="release-process.html#supported-versions">Supported versions</a></li> <li class="toctree-l2"><a class="reference internal" href="release-process.html#long-term-support-lts-releases">Long-term support (LTS) releases</a></li> <li class="toctree-l2"><a class="reference internal" href="release-process.html#release-process">Release process</a></li> </ul> </li> <li class="toctree-l1"><a class="reference internal" href="deprecation.html">Django Deprecation Timeline</a><ul> <li class="toctree-l2"><a class="reference internal" href="deprecation.html#id1">1.5</a></li> <li class="toctree-l2"><a class="reference internal" href="deprecation.html#id2">1.6</a></li> <li class="toctree-l2"><a class="reference internal" href="deprecation.html#id3">1.7</a></li> <li class="toctree-l2"><a class="reference internal" href="deprecation.html#id4">2.0</a></li> </ul> </li> <li class="toctree-l1"><a class="reference internal" href="git.html">The Django source code repository</a><ul> <li class="toctree-l2"><a class="reference internal" href="git.html#high-level-overview">High-level overview</a></li> <li class="toctree-l2"><a 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