require 'active_support/core_ext/object/try' module ActionView # = Action View Rendering module Rendering # This is temporary until we remove the renderer dependency from AV. delegate :render, :render_body, :to => :@_renderer # Returns the contents that are yielded to a layout, given a name or a block. # # You can think of a layout as a method that is called with a block. If the user calls # yield :some_name, the block, by default, returns content_for(:some_name). # If the user calls simply +yield+, the default block returns content_for(:layout). # # The user can override this default by passing a block to the layout: # # # The template # <%= render :layout => "my_layout" do %> # Content # <% end %> # # # The layout # # <%= yield %> # # # In this case, instead of the default block, which would return content_for(:layout), # this method returns the block that was passed in to render :layout, and the response # would be # # # Content # # # Finally, the block can take block arguments, which can be passed in by +yield+: # # # The template # <%= render :layout => "my_layout" do |customer| %> # Hello <%= customer.name %> # <% end %> # # # The layout # # <%= yield Struct.new(:name).new("David") %> # # # In this case, the layout would receive the block passed into render :layout, # and the struct specified would be passed into the block as an argument. The result # would be # # # Hello David # # def _layout_for(*args) name = args.first name = :layout unless name.is_a?(Symbol) @_view_flow.get(name).html_safe end # Handle layout for calls from partials that supports blocks. def _block_layout_for(*args, &block) name = args.first if !name.is_a?(Symbol) && block capture(*args, &block) else _layout_for(*args) end end end end