From 04b0849dc5619f73e91879409f8f24055cc4f183 Mon Sep 17 00:00:00 2001
From: Dirk Kelly <dk@dirkkelly.com>
Date: Wed, 2 Mar 2011 08:14:58 +0800
Subject: [PATCH] Added the liquid tag for content, retrieves an editable
 element from self or parent if inherited: true

---
 lib/locomotive/liquid/tags/editable/ouput.rb | 49 ++++++++++++++++++++
 1 file changed, 49 insertions(+)
 create mode 100644 lib/locomotive/liquid/tags/editable/ouput.rb

diff --git a/lib/locomotive/liquid/tags/editable/ouput.rb b/lib/locomotive/liquid/tags/editable/ouput.rb
new file mode 100644
index 00000000..1964f92a
--- /dev/null
+++ b/lib/locomotive/liquid/tags/editable/ouput.rb
@@ -0,0 +1,49 @@
+module Locomotive
+  module Liquid
+    module Tags
+      module Editable
+        class Content < ::Liquid::Tag
+          
+          Syntax = /(#{::Liquid::Expression}+)?/
+          
+          def initialize(tag_name, markup, tokens, context)
+            if markup =~ Syntax
+              @slug = $1
+              @options = { :inherit => false }
+              markup.scan(::Liquid::TagAttributes) { |key, value| @options[key.to_sym] = value.gsub(/"|'/, '') }
+            else
+              raise ::Liquid::SyntaxError.new("Syntax Error in 'content' - Valid syntax: slug")
+            end
+
+            super
+          end
+          
+          def render(context)
+            page = context.registers[:page]
+            element = find_element(page)
+            
+            if element.nil? && @options[:inherit] != false
+              while page.parent.present? && element.nil?
+                page = page.parent
+                element = find_element(page)
+              end
+            end
+            
+            if element.present?
+              return element.content
+            else
+              raise ::Liquid::SyntaxError.new("Error in 'content' - Can't find editable element called `#{@slug}`")
+            end
+          end
+          
+          def find_element(page)
+            page.editable_elements.where(:slug => @slug).first
+          end
+          
+        end
+        
+        ::Liquid::Template.register_tag('content', Content)
+      end
+    end
+  end
+end
\ No newline at end of file