199 lines
6.8 KiB
HTML
199 lines
6.8 KiB
HTML
<?xml version="1.0" encoding="utf-8"?>
|
|
<!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" xml:lang="en" lang="en">
|
|
<head>
|
|
<title>Class: Rack::ConditionalGet</title>
|
|
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
|
|
<meta http-equiv="Content-Script-Type" content="text/javascript" />
|
|
<link rel="stylesheet" href="../.././rdoc-style.css" type="text/css" media="screen" />
|
|
<script type="text/javascript">
|
|
// <![CDATA[
|
|
|
|
function popupCode( url ) {
|
|
window.open(url, "Code", "resizable=yes,scrollbars=yes,toolbar=no,status=no,height=150,width=400")
|
|
}
|
|
|
|
function toggleCode( id ) {
|
|
if ( document.getElementById )
|
|
elem = document.getElementById( id );
|
|
else if ( document.all )
|
|
elem = eval( "document.all." + id );
|
|
else
|
|
return false;
|
|
|
|
elemStyle = elem.style;
|
|
|
|
if ( elemStyle.display != "block" ) {
|
|
elemStyle.display = "block"
|
|
} else {
|
|
elemStyle.display = "none"
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
// Make codeblocks hidden by default
|
|
document.writeln( "<style type=\"text/css\">div.method-source-code { display: none }</style>" )
|
|
|
|
// ]]>
|
|
</script>
|
|
|
|
</head>
|
|
<body>
|
|
|
|
|
|
|
|
<div id="classHeader">
|
|
<table class="header-table">
|
|
<tr class="top-aligned-row">
|
|
<td><strong>Class</strong></td>
|
|
<td class="class-name-in-header">Rack::ConditionalGet</td>
|
|
</tr>
|
|
<tr class="top-aligned-row">
|
|
<td><strong>In:</strong></td>
|
|
<td>
|
|
<a href="../../files/lib/rack/conditionalget_rb.html">
|
|
lib/rack/conditionalget.rb
|
|
</a>
|
|
<br />
|
|
</td>
|
|
</tr>
|
|
|
|
<tr class="top-aligned-row">
|
|
<td><strong>Parent:</strong></td>
|
|
<td>
|
|
Object
|
|
</td>
|
|
</tr>
|
|
</table>
|
|
</div>
|
|
<!-- banner header -->
|
|
|
|
<div id="bodyContent">
|
|
|
|
|
|
|
|
<div id="contextContent">
|
|
|
|
<div id="description">
|
|
<p>
|
|
Middleware that enables conditional GET using If-None-Match and
|
|
If-Modified-Since. The application should set either or both of the
|
|
Last-Modified or Etag response headers according to RFC 2616. When either
|
|
of the conditions is met, the response body is set to be zero length and
|
|
the response status is set to 304 Not Modified.
|
|
</p>
|
|
<p>
|
|
Applications that defer response body generation until the body‘s
|
|
each message is received will avoid response body generation completely
|
|
when a conditional GET matches.
|
|
</p>
|
|
<p>
|
|
Adapted from Michael Klishin‘s Merb implementation: <a
|
|
href="http://github.com/wycats/merb-core/tree/master/lib/merb-core/rack/middleware/conditional_get.rb">github.com/wycats/merb-core/tree/master/lib/merb-core/rack/middleware/conditional_get.rb</a>
|
|
</p>
|
|
|
|
</div>
|
|
|
|
|
|
</div>
|
|
|
|
<div id="method-list">
|
|
<h3 class="section-bar">Methods</h3>
|
|
|
|
<div class="name-list">
|
|
<a href="#M000191">call</a>
|
|
<a href="#M000190">new</a>
|
|
</div>
|
|
</div>
|
|
|
|
</div>
|
|
|
|
|
|
<!-- if includes -->
|
|
|
|
<div id="section">
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<!-- if method_list -->
|
|
<div id="methods">
|
|
<h3 class="section-bar">Public Class methods</h3>
|
|
|
|
<div id="method-M000190" class="method-detail">
|
|
<a name="M000190"></a>
|
|
|
|
<div class="method-heading">
|
|
<a href="#M000190" class="method-signature">
|
|
<span class="method-name">new</span><span class="method-args">(app)</span>
|
|
</a>
|
|
</div>
|
|
|
|
<div class="method-description">
|
|
<p><a class="source-toggle" href="#"
|
|
onclick="toggleCode('M000190-source');return false;">[Source]</a></p>
|
|
<div class="method-source-code" id="M000190-source">
|
|
<pre>
|
|
<span class="ruby-comment cmt"># File lib/rack/conditionalget.rb, line 16</span>
|
|
16: <span class="ruby-keyword kw">def</span> <span class="ruby-identifier">initialize</span>(<span class="ruby-identifier">app</span>)
|
|
17: <span class="ruby-ivar">@app</span> = <span class="ruby-identifier">app</span>
|
|
18: <span class="ruby-keyword kw">end</span>
|
|
</pre>
|
|
</div>
|
|
</div>
|
|
</div>
|
|
|
|
<h3 class="section-bar">Public Instance methods</h3>
|
|
|
|
<div id="method-M000191" class="method-detail">
|
|
<a name="M000191"></a>
|
|
|
|
<div class="method-heading">
|
|
<a href="#M000191" class="method-signature">
|
|
<span class="method-name">call</span><span class="method-args">(env)</span>
|
|
</a>
|
|
</div>
|
|
|
|
<div class="method-description">
|
|
<p><a class="source-toggle" href="#"
|
|
onclick="toggleCode('M000191-source');return false;">[Source]</a></p>
|
|
<div class="method-source-code" id="M000191-source">
|
|
<pre>
|
|
<span class="ruby-comment cmt"># File lib/rack/conditionalget.rb, line 20</span>
|
|
20: <span class="ruby-keyword kw">def</span> <span class="ruby-identifier">call</span>(<span class="ruby-identifier">env</span>)
|
|
21: <span class="ruby-keyword kw">return</span> <span class="ruby-ivar">@app</span>.<span class="ruby-identifier">call</span>(<span class="ruby-identifier">env</span>) <span class="ruby-keyword kw">unless</span> <span class="ruby-node">%w[GET HEAD]</span>.<span class="ruby-identifier">include?</span>(<span class="ruby-identifier">env</span>[<span class="ruby-value str">'REQUEST_METHOD'</span>])
|
|
22:
|
|
23: <span class="ruby-identifier">status</span>, <span class="ruby-identifier">headers</span>, <span class="ruby-identifier">body</span> = <span class="ruby-ivar">@app</span>.<span class="ruby-identifier">call</span>(<span class="ruby-identifier">env</span>)
|
|
24: <span class="ruby-identifier">headers</span> = <span class="ruby-constant">Utils</span><span class="ruby-operator">::</span><span class="ruby-constant">HeaderHash</span>.<span class="ruby-identifier">new</span>(<span class="ruby-identifier">headers</span>)
|
|
25: <span class="ruby-keyword kw">if</span> <span class="ruby-identifier">etag_matches?</span>(<span class="ruby-identifier">env</span>, <span class="ruby-identifier">headers</span>) <span class="ruby-operator">||</span> <span class="ruby-identifier">modified_since?</span>(<span class="ruby-identifier">env</span>, <span class="ruby-identifier">headers</span>)
|
|
26: <span class="ruby-identifier">status</span> = <span class="ruby-value">304</span>
|
|
27: <span class="ruby-identifier">body</span> = []
|
|
28: <span class="ruby-keyword kw">end</span>
|
|
29: [<span class="ruby-identifier">status</span>, <span class="ruby-identifier">headers</span>, <span class="ruby-identifier">body</span>]
|
|
30: <span class="ruby-keyword kw">end</span>
|
|
</pre>
|
|
</div>
|
|
</div>
|
|
</div>
|
|
|
|
|
|
</div>
|
|
|
|
|
|
</div>
|
|
|
|
|
|
<div id="validator-badges">
|
|
<p><small><a href="http://validator.w3.org/check/referer">[Validate]</a></small></p>
|
|
</div>
|
|
|
|
</body>
|
|
</html> |