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<title>class Rack::Utils::Context - rack-2.2.23 Documentation</title>

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  <h1 id="class-Rack::Utils::Context" class="class">
    class Rack::Utils::Context
  </h1>

<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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        <h3>Attributes</h3>
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         <h3>Public Class Methods</h3>
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          <span class="method-name">new</span><span
            class="method-args">(app_f, app_r)</span>
          
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            <pre><span class="ruby-comment"># File lib/rack/utils.rb, line 444</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">&#39;running context does not respond to #context&#39;</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
            class="method-args">(env)</span>
          
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            <pre><span class="ruby-comment"># File lib/rack/utils.rb, line 449</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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<div id="method-i-context" class="method-detail ">
        
        <div class="method-heading">
          <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 457</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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<div id="method-i-recontext" class="method-detail ">
        
        <div class="method-heading">
          <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 453</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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