lib/mongodb_logger/server/helpers/content_for.rb
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