Provides functionality for rendering layouts as partials.
Returns a string containing the rendered given layout.
@param [String] identifier The identifier of the layout that should be rendered
@param [Hash] other_assigns A hash containing assigns that will be made available as instance variables in the partial
@example Rendering a head and a foot partial around some text
<%= render 'head' %> - MIDDLE - <%= render 'foot' %> # => "HEAD - MIDDLE - FOOT"
@example Rendering a head partial with a custom title
# The 'head' layout <h1><%= @title %></h1> # The item/layout where the partial is rendered <%= render 'head', :title => 'Foo' %> # => "<h1>Foo</h1>"
@raise [Nanoc3::Errors::UnknownLayout] if the given layout does not exist
@return [String] The rendered partial
# File lib/nanoc3/helpers/rendering.rb, line 35 def render(identifier, other_assigns={}, &block) # Find layout layout = @site.layouts.find { |l| l.identifier == identifier.cleaned_identifier } raise Nanoc3::Errors::UnknownLayout.new(identifier.cleaned_identifier) if layout.nil? # Capture content, if any captured_content = block_given? ? capture(&block) : nil # Get assigns assigns = { :content => captured_content, :item => @item, :item_rep => @item_rep, :items => @items, :layout => layout, :layouts => @layouts, :config => @config, :site => @site }.merge(other_assigns) # Get filter name filter_name, filter_args = @site.compiler.filter_for_layout(layout) raise Nanoc3::Errors::CannotDetermineFilter.new(layout.identifier) if filter_name.nil? # Get filter class filter_class = Nanoc3::Filter.named(filter_name) raise Nanoc3::Errors::UnknownFilter.new(filter_name) if filter_class.nil? # Create filter filter = filter_class.new(assigns) # Layout @site.compiler.stack.push(layout) result = filter.run(layout.raw_content, filter_args) @site.compiler.stack.pop # Append to erbout if we have a block if block_given? erbout = eval('_erbout', block.binding) erbout << result end # Done result end
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