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