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<head>
<title>Class: Erubis::Context</title>
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<body>
<div id="classHeader">
<table class="header-table">
<tr class="top-aligned-row">
<td><strong>Class</strong></td>
<td class="class-name-in-header">Erubis::Context</td>
</tr>
<tr class="top-aligned-row">
<td><strong>In:</strong></td>
<td>
<a href="../../files/erubis/context_rb.html">
erubis/context.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>
context object for Engine#evaluate
</p>
<p>
ex.
</p>
<pre>
template = &lt;&lt;'END'
Hello &lt;%= @user %&gt;!
&lt;% for item in @list %&gt;
- &lt;%= item %&gt;
&lt;% end %&gt;
END
context = Erubis::Context.new(:user=&gt;'World', :list=&gt;['a','b','c'])
# or
# context = Erubis::Context.new
# context[:user] = 'World'
# context[:list] = ['a', 'b', 'c']
eruby = Erubis::Eruby.new(template)
print eruby.evaluate(context)
</pre>
</div>
</div>
<div id="method-list">
<h3 class="section-bar">Methods</h3>
<div class="name-list">
<a href="#M000219">[]</a>&nbsp;&nbsp;
<a href="#M000220">[]=</a>&nbsp;&nbsp;
<a href="#M000222">each</a>&nbsp;&nbsp;
<a href="#M000221">keys</a>&nbsp;&nbsp;
<a href="#M000218">new</a>&nbsp;&nbsp;
<a href="#M000223">to_hash</a>&nbsp;&nbsp;
<a href="#M000224">update</a>&nbsp;&nbsp;
</div>
</div>
</div>
<!-- if includes -->
<div id="includes">
<h3 class="section-bar">Included Modules</h3>
<div id="includes-list">
<span class="include-name">Enumerable</span>
</div>
</div>
<div id="section">
<!-- if method_list -->
<div id="methods">
<h3 class="section-bar">Public Class methods</h3>
<div id="method-M000218" class="method-detail">
<a name="M000218"></a>
<div class="method-heading">
<a href="#M000218" class="method-signature">
<span class="method-name">new</span><span class="method-args">(hash=nil)</span>
</a>
</div>
<div class="method-description">
<p><a class="source-toggle" href="#"
onclick="toggleCode('M000218-source');return false;">[Source]</a></p>
<div class="method-source-code" id="M000218-source">
<pre>
<span class="ruby-comment cmt"># File erubis/context.rb, line 33</span>
<span class="ruby-keyword kw">def</span> <span class="ruby-identifier">initialize</span>(<span class="ruby-identifier">hash</span>=<span class="ruby-keyword kw">nil</span>)
<span class="ruby-identifier">hash</span>.<span class="ruby-identifier">each</span> <span class="ruby-keyword kw">do</span> <span class="ruby-operator">|</span><span class="ruby-identifier">name</span>, <span class="ruby-identifier">value</span><span class="ruby-operator">|</span>
<span class="ruby-keyword kw">self</span>[<span class="ruby-identifier">name</span>] = <span class="ruby-identifier">value</span>
<span class="ruby-keyword kw">end</span> <span class="ruby-keyword kw">if</span> <span class="ruby-identifier">hash</span>
<span class="ruby-keyword kw">end</span>
</pre>
</div>
</div>
</div>
<h3 class="section-bar">Public Instance methods</h3>
<div id="method-M000219" class="method-detail">
<a name="M000219"></a>
<div class="method-heading">
<a href="#M000219" class="method-signature">
<span class="method-name">[]</span><span class="method-args">(key)</span>
</a>
</div>
<div class="method-description">
<p><a class="source-toggle" href="#"
onclick="toggleCode('M000219-source');return false;">[Source]</a></p>
<div class="method-source-code" id="M000219-source">
<pre>
<span class="ruby-comment cmt"># File erubis/context.rb, line 39</span>
<span class="ruby-keyword kw">def</span> <span class="ruby-operator">[]</span>(<span class="ruby-identifier">key</span>)
<span class="ruby-keyword kw">return</span> <span class="ruby-identifier">instance_variable_get</span>(<span class="ruby-node">&quot;@#{key}&quot;</span>)
<span class="ruby-keyword kw">end</span>
</pre>
</div>
</div>
</div>
<div id="method-M000220" class="method-detail">
<a name="M000220"></a>
<div class="method-heading">
<a href="#M000220" class="method-signature">
<span class="method-name">[]=</span><span class="method-args">(key, value)</span>
</a>
</div>
<div class="method-description">
<p><a class="source-toggle" href="#"
onclick="toggleCode('M000220-source');return false;">[Source]</a></p>
<div class="method-source-code" id="M000220-source">
<pre>
<span class="ruby-comment cmt"># File erubis/context.rb, line 43</span>
<span class="ruby-keyword kw">def</span> <span class="ruby-operator">[]=</span>(<span class="ruby-identifier">key</span>, <span class="ruby-identifier">value</span>)
<span class="ruby-keyword kw">return</span> <span class="ruby-identifier">instance_variable_set</span>(<span class="ruby-node">&quot;@#{key}&quot;</span>, <span class="ruby-identifier">value</span>)
<span class="ruby-keyword kw">end</span>
</pre>
</div>
</div>
</div>
<div id="method-M000222" class="method-detail">
<a name="M000222"></a>
<div class="method-heading">
<a href="#M000222" class="method-signature">
<span class="method-name">each</span><span class="method-args">() {|key, value| ...}</span>
</a>
</div>
<div class="method-description">
<p><a class="source-toggle" href="#"
onclick="toggleCode('M000222-source');return false;">[Source]</a></p>
<div class="method-source-code" id="M000222-source">
<pre>
<span class="ruby-comment cmt"># File erubis/context.rb, line 51</span>
<span class="ruby-keyword kw">def</span> <span class="ruby-identifier">each</span>
<span class="ruby-identifier">instance_variables</span>.<span class="ruby-identifier">each</span> <span class="ruby-keyword kw">do</span> <span class="ruby-operator">|</span><span class="ruby-identifier">name</span><span class="ruby-operator">|</span>
<span class="ruby-identifier">key</span> = <span class="ruby-identifier">name</span>[<span class="ruby-value">1</span><span class="ruby-operator">..</span><span class="ruby-value">-1</span>]
<span class="ruby-identifier">value</span> = <span class="ruby-identifier">instance_variable_get</span>(<span class="ruby-identifier">name</span>)
<span class="ruby-keyword kw">yield</span>(<span class="ruby-identifier">key</span>, <span class="ruby-identifier">value</span>)
<span class="ruby-keyword kw">end</span>
<span class="ruby-keyword kw">end</span>
</pre>
</div>
</div>
</div>
<div id="method-M000221" class="method-detail">
<a name="M000221"></a>
<div class="method-heading">
<a href="#M000221" class="method-signature">
<span class="method-name">keys</span><span class="method-args">()</span>
</a>
</div>
<div class="method-description">
<p><a class="source-toggle" href="#"
onclick="toggleCode('M000221-source');return false;">[Source]</a></p>
<div class="method-source-code" id="M000221-source">
<pre>
<span class="ruby-comment cmt"># File erubis/context.rb, line 47</span>
<span class="ruby-keyword kw">def</span> <span class="ruby-identifier">keys</span>
<span class="ruby-keyword kw">return</span> <span class="ruby-identifier">instance_variables</span>.<span class="ruby-identifier">collect</span> { <span class="ruby-operator">|</span><span class="ruby-identifier">name</span><span class="ruby-operator">|</span> <span class="ruby-identifier">name</span>[<span class="ruby-value">1</span><span class="ruby-operator">..</span><span class="ruby-value">-1</span>] }
<span class="ruby-keyword kw">end</span>
</pre>
</div>
</div>
</div>
<div id="method-M000223" class="method-detail">
<a name="M000223"></a>
<div class="method-heading">
<a href="#M000223" class="method-signature">
<span class="method-name">to_hash</span><span class="method-args">()</span>
</a>
</div>
<div class="method-description">
<p><a class="source-toggle" href="#"
onclick="toggleCode('M000223-source');return false;">[Source]</a></p>
<div class="method-source-code" id="M000223-source">
<pre>
<span class="ruby-comment cmt"># File erubis/context.rb, line 59</span>
<span class="ruby-keyword kw">def</span> <span class="ruby-identifier">to_hash</span>
<span class="ruby-identifier">hash</span> = {}
<span class="ruby-keyword kw">self</span>.<span class="ruby-identifier">keys</span>.<span class="ruby-identifier">each</span> { <span class="ruby-operator">|</span><span class="ruby-identifier">key</span><span class="ruby-operator">|</span> <span class="ruby-identifier">hash</span>[<span class="ruby-identifier">key</span>] = <span class="ruby-keyword kw">self</span>[<span class="ruby-identifier">key</span>] }
<span class="ruby-keyword kw">return</span> <span class="ruby-identifier">hash</span>
<span class="ruby-keyword kw">end</span>
</pre>
</div>
</div>
</div>
<div id="method-M000224" class="method-detail">
<a name="M000224"></a>
<div class="method-heading">
<a href="#M000224" class="method-signature">
<span class="method-name">update</span><span class="method-args">(context_or_hash)</span>
</a>
</div>
<div class="method-description">
<p><a class="source-toggle" href="#"
onclick="toggleCode('M000224-source');return false;">[Source]</a></p>
<div class="method-source-code" id="M000224-source">
<pre>
<span class="ruby-comment cmt"># File erubis/context.rb, line 65</span>
<span class="ruby-keyword kw">def</span> <span class="ruby-identifier">update</span>(<span class="ruby-identifier">context_or_hash</span>)
<span class="ruby-identifier">arg</span> = <span class="ruby-identifier">context_or_hash</span>
<span class="ruby-keyword kw">if</span> <span class="ruby-identifier">arg</span>.<span class="ruby-identifier">is_a?</span>(<span class="ruby-constant">Hash</span>)
<span class="ruby-identifier">arg</span>.<span class="ruby-identifier">each</span> <span class="ruby-keyword kw">do</span> <span class="ruby-operator">|</span><span class="ruby-identifier">key</span>, <span class="ruby-identifier">val</span><span class="ruby-operator">|</span>
<span class="ruby-keyword kw">self</span>[<span class="ruby-identifier">key</span>] = <span class="ruby-identifier">val</span>
<span class="ruby-keyword kw">end</span>
<span class="ruby-keyword kw">else</span>
<span class="ruby-identifier">arg</span>.<span class="ruby-identifier">instance_variables</span>.<span class="ruby-identifier">each</span> <span class="ruby-keyword kw">do</span> <span class="ruby-operator">|</span><span class="ruby-identifier">varname</span><span class="ruby-operator">|</span>
<span class="ruby-identifier">key</span> = <span class="ruby-identifier">varname</span>[<span class="ruby-value">1</span><span class="ruby-operator">..</span><span class="ruby-value">-1</span>]
<span class="ruby-identifier">val</span> = <span class="ruby-identifier">arg</span>.<span class="ruby-identifier">instance_variable_get</span>(<span class="ruby-identifier">varname</span>)
<span class="ruby-keyword kw">self</span>[<span class="ruby-identifier">key</span>] = <span class="ruby-identifier">val</span>
<span class="ruby-keyword kw">end</span>
<span class="ruby-keyword kw">end</span>
<span class="ruby-keyword kw">end</span>
</pre>
</div>
</div>
</div>
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<p><small><a href="http://validator.w3.org/check/referer">[Validate]</a></small></p>
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