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<h1 id="class-Rack::Utils::Context" class="class">
class Rack::Utils::Context
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<section class="description">
<p><a href="Context.html"><code>Context</code></a> allows the use of a compatible middleware at different points in a request handling stack. A compatible middleware must define <a href="Context.html#method-i-context"><code>context</code></a> which should take the arguments env and app. The first of which would be the request environment. The second of which would be the rack application that the request would be forwarded to.</p>
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<pre><span class="ruby-comment"># File lib/rack/utils.rb, line 413</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">initialize</span>(<span class="ruby-identifier">app_f</span>, <span class="ruby-identifier">app_r</span>)
<span class="ruby-identifier">raise</span> <span class="ruby-string">'running context does not respond to #context'</span> <span class="ruby-keyword">unless</span> <span class="ruby-identifier">app_f</span>.<span class="ruby-identifier">respond_to?</span> <span class="ruby-value">:context</span>
<span class="ruby-ivar">@for</span>, <span class="ruby-ivar">@app</span> = <span class="ruby-identifier">app_f</span>, <span class="ruby-identifier">app_r</span>
<span class="ruby-keyword">end</span></pre>
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<span class="method-name">call</span><span
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<pre><span class="ruby-comment"># File lib/rack/utils.rb, line 418</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">call</span>(<span class="ruby-identifier">env</span>)
<span class="ruby-ivar">@for</span>.<span class="ruby-identifier">context</span>(<span class="ruby-identifier">env</span>, <span class="ruby-ivar">@app</span>)
<span class="ruby-keyword">end</span></pre>
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<span class="method-name">context</span><span
class="method-args">(env, app = @app)</span>
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<div class="method-source-code" id="context-source">
<pre><span class="ruby-comment"># File lib/rack/utils.rb, line 426</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">context</span>(<span class="ruby-identifier">env</span>, <span class="ruby-identifier">app</span> = <span class="ruby-ivar">@app</span>)
<span class="ruby-identifier">recontext</span>(<span class="ruby-identifier">app</span>).<span class="ruby-identifier">call</span>(<span class="ruby-identifier">env</span>)
<span class="ruby-keyword">end</span></pre>
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<span class="method-name">recontext</span><span
class="method-args">(app)</span>
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<div class="method-source-code" id="recontext-source">
<pre><span class="ruby-comment"># File lib/rack/utils.rb, line 422</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">recontext</span>(<span class="ruby-identifier">app</span>)
<span class="ruby-keyword">self</span>.<span class="ruby-identifier">class</span>.<span class="ruby-identifier">new</span>(<span class="ruby-ivar">@for</span>, <span class="ruby-identifier">app</span>)
<span class="ruby-keyword">end</span></pre>
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