django-rest-framework/topics/formoverloading.html
2012-10-08 12:19:26 +01:00

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<li class="main"><a href="#browser-hacks">Browser hacks</a></li>
<li><a href="#browser-based-put,-delete,-etc">Browser based PUT, DELETE, etc...</a></li>
<li><a href="#browser-based-submission-of-non-form-content">Browser based submission of non-form content</a></li>
<li><a href="#url-based-accept-headers">URL based accept headers</a></li>
<li><a href="#url-based-format-suffixes">URL based format suffixes</a></li>
<li><a href="#doesnt-html5-support-put-and-delete-forms">Doesn't HTML5 support PUT and DELETE forms?</a></li>
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<h1 id="browser-hacks">Browser hacks</h1>
<blockquote>
<p>"There are two noncontroversial uses for overloaded POST. The first is to <em>simulate</em> HTTP's uniform interface for clients like web browsers that don't support PUT or DELETE"</p>
<p>&mdash; <a href="1">RESTful Web Services</a>, Leonard Richardson &amp; Sam Ruby.</p>
</blockquote>
<h2 id="browser-based-put-delete-etc">Browser based PUT, DELETE, etc...</h2>
<p><strong>TODO: Preamble.</strong> Note that this is the same strategy as is used in <a href="2">Ruby on Rails</a>.</p>
<p>For example, given the following form:</p>
<pre class="prettyprint lang-py"><code>&lt;form action="/news-items/5" method="POST"&gt;
&lt;input type="hidden" name="_method" value="DELETE"&gt;
&lt;/form&gt;
</code></pre>
<p><code>request.method</code> would return <code>"DELETE"</code>.</p>
<h2 id="browser-based-submission-of-non-form-content">Browser based submission of non-form content</h2>
<p>Browser-based submission of content types other than form are supported by using form fields named <code>_content</code> and <code>_content_type</code>:</p>
<p>For example, given the following form:</p>
<pre class="prettyprint lang-py"><code>&lt;form action="/news-items/5" method="PUT"&gt;
&lt;input type="hidden" name="_content_type" value="application/json"&gt;
&lt;input name="_content" value="{'count': 1}"&gt;
&lt;/form&gt;
</code></pre>
<p><code>request.content_type</code> would return <code>"application/json"</code>, and <code>request.content</code> would return <code>"{'count': 1}"</code></p>
<h2 id="url-based-accept-headers">URL based accept headers</h2>
<h2 id="url-based-format-suffixes">URL based format suffixes</h2>
<h2 id="doesnt-html5-support-put-and-delete-forms">Doesn't HTML5 support PUT and DELETE forms?</h2>
<p>Nope. It was at one point intended to support <code>PUT</code> and <code>DELETE</code> forms, but was later <a href="3">dropped from the spec</a>. There remains <a href="4">ongoing discussion</a> about adding support for <code>PUT</code> and <code>DELETE</code>, as well as how to support content types other than form-encoded data.</p>
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