I have seen a number of examples where HTML code is treated as a Ruby
block. For example, here is one taken from the Agile Rails book:
<% content_for( :sidebar) do %>
<ul>
<li>this text will be rendered</li>
<li>and saved for later</li>
<li>it may contain <%= "dynamic" %> stuff</li>
</ul>
<% end %>
I have no idea how this works. Can someone please give me a clue as
to how this works? Additionally (and this is what I am really trying
to do) I'm wondering if there isn't some way I could use this approach
to display a block of HTML code conditionally. Any ideas?
Thanks for any input.
... doug
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