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<h1 class="class">Rack::Utils::Context</h1>
<div id="description" class="description">
<p><a href="Context.html">Context</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">context</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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<span class="ruby-comment"># File lib/rack/utils.rb, line 456</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier">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>
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<span class="ruby-comment"># File lib/rack/utils.rb, line 461</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier">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>)
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<span class="ruby-comment"># File lib/rack/utils.rb, line 469</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier">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="ruby-comment"># File lib/rack/utils.rb, line 465</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier">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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