59 lines
1.7 KiB
Ruby
59 lines
1.7 KiB
Ruby
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module Sinatra
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module ContentFor
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# Capture a block of content to be rendered later. For example:
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#
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# <% content_for :head do %>
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# <script type="text/javascript" src="/foo.js"></script>
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# <% end %>
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#
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# You can call +content_for+ multiple times with the same key
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# (in the example +:head+), and when you render the blocks for
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# that key all of them will be rendered, in the same order you
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# captured them.
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#
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# Your blocks can also receive values, which are passed to them
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# by <tt>yield_content</tt>
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def content_for(key, &block)
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content_blocks[key.to_sym] << block
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end
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# Render the captured blocks for a given key. For example:
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#
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# <head>
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# <title>Example</title>
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# <% yield_content :head %>
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# </head>
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#
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# Would render everything you declared with <tt>content_for
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# :head</tt> before closing the <tt><head></tt> tag.
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#
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# You can also pass values to the content blocks by passing them
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# as arguments after the key:
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#
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# <% yield_content :head, 1, 2 %>
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#
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# Would pass <tt>1</tt> and <tt>2</tt> to all the blocks registered
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# for <tt>:head</tt>.
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#
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# *NOTICE* that you call this without an <tt>=</tt> sign. IE,
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# in a <tt><% %></tt> block, and not in a <tt><%= %></tt> block.
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def yield_content(key, *args)
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content_blocks[key.to_sym].map do |content|
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if respond_to?(:block_is_haml?) && block_is_haml?(content)
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capture_haml(*args, &content)
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else
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content.call(*args)
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end
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end.join
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end
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private
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def content_blocks
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@content_blocks ||= Hash.new {|h,k| h[k] = [] }
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end
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end
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helpers ContentFor
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end
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