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PORails weird capture block error
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  1. PORails weird capture block error
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    copied!<p>I have a helper method 'default_content_for' which can be used to provide default content for yield sections. However when I'm using it, I get weird output from the helper. </p> <p>I'm pretty sure I'm probably missing something simple, but still not sure what is wrong.</p> <p>The title ends up full of stuff above the beginning of the block. Like so: </p> <pre><code>&lt;title&gt; Default Title&amp;lt;!DOCTYPE html&amp;gt; &amp;lt;html&amp;gt; &amp;lt;head&amp;gt; &amp;lt;title&amp;gt; Default Title &lt;/title&gt; </code></pre> <p>application.html.erb</p> <pre><code>&lt;!DOCTYPE html&gt; &lt;html&gt; &lt;head&gt; &lt;title&gt; &lt;% default_content_for :title do %&gt; Default Title &lt;% end %&gt; &lt;/title&gt; &lt;%= stylesheet_link_tag :all %&gt; &lt;%= javascript_include_tag :defaults %&gt; &lt;%= csrf_meta_tag %&gt; &lt;/head&gt; &lt;body&gt; &lt;%= yield %&gt; &lt;/body&gt; &lt;/html&gt; &lt;!DOCTYPE html&gt; &lt;html&gt; &lt;head&gt; &lt;title&gt; &lt;% default_content_for :title do %&gt; Default Title &lt;% end %&gt; &lt;/title&gt; &lt;%= stylesheet_link_tag :all %&gt; &lt;%= javascript_include_tag :defaults %&gt; &lt;%= csrf_meta_tag %&gt; &lt;/head&gt; &lt;body&gt; &lt;%= yield %&gt; &lt;/body&gt; &lt;/html&gt; </code></pre> <p>helper method</p> <pre><code>module ApplicationHelper def default_content_for(name, &amp;block) name = name.kind_of?(Symbol) ? ":#{name}" : name out = eval("yield #{name}", block.binding) out = (out ? (out.empty? ? false : out): false) || capture(&amp;block) concat(out) end end </code></pre> <p>output</p> <pre><code>&lt;!DOCTYPE html&gt; &lt;html&gt;&lt;head&gt; &lt;title&gt; Default Title&amp;lt;!DOCTYPE html&amp;gt; &amp;lt;html&amp;gt; &amp;lt;head&amp;gt; &amp;lt;title&amp;gt; Survey Builder &lt;/title&gt; &lt;script type="text/javascript" src="/javascripts/prototype.js?1314309079"&gt;&lt;/script&gt; &lt;script type="text/javascript" src="/javascripts/effects.js?1314309079"&gt;&lt;/script&gt; &lt;script type="text/javascript" src="/javascripts/dragdrop.js?1314309078"&gt;&lt;/script&gt; &lt;script type="text/javascript" src="/javascripts/controls.js?1314309078"&gt;&lt;/script&gt; &lt;script type="text/javascript" src="/javascripts/rails.js?1314309079"&gt;&lt;/script&gt; &lt;script type="text/javascript" src="/javascripts/application.js?1314309078"&gt;&lt;/script&gt; &lt;meta content="authenticity_token" name="csrf-param"&gt; &lt;meta content="oG4mVUt5wy6aWdhbxmXa3tYh3DUgXVUQy9d6uxng6a0=" name="csrf-token"&gt; &lt;/head&gt; &lt;body&gt; &lt;div id="user_nav"&gt; Logged in as KARL KIRCH &lt;a href="/log_out"&gt;Log out&lt;/a&gt; &lt;/div&gt; &lt;h1&gt;Home#index&lt;/h1&gt; &lt;p&gt;Find me in app/views/home/index.html.erb&lt;/p&gt; &lt;/body&gt;&lt;/html&gt; </code></pre>
 

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