@@ -20,7 +20,9 @@ module Liquid # # {% for item in collection limit:5 offset:10 %} # {{ item.name }} - # {% end %} + # {% end %} + # + # To reverse the for loop simply use {% for item in collection reversed %} # # == Available variables: # @@ -40,13 +42,14 @@ module Liquid # forloop.last:: Returns true if the item is the last item. # class For < Block - Syntax = /(\w+)\s+in\s+(#{VariableSignature}+)/ + Syntax = /(\w+)\s+in\s+(#{VariableSignature}+)\s*(reversed)?/ def initialize(tag_name, markup, tokens) if markup =~ Syntax @variable_name = $1 @collection_name = $2 - @name = "#{$1}-#{$2}" + @name = "#{$1}-#{$2}" + @reversed = $3 @attributes = {} markup.scan(TagAttributes) do |key, value| @attributes[key] = value @@ -80,10 +83,12 @@ module Liquid return '' if segment.empty? + segment.reverse! if @reversed + result = [] - length = segment.length - + length = segment.length + # Store our progress through the collection for the continue flag context.registers[:for][@name] = from + segment.length lib/liquid/tags/for.rb @@ -376,6 +376,11 @@ HERE assert_template_result('', '{% if null == true %}?{% endif %}', {}) end + def test_for_reversed + assigns = {'array' => [ 1, 2, 3] } + assert_template_result('321','{%for item in array reversed %}{{item}}{%endfor%}',assigns) + end + def test_ifchanged assigns = {'array' => [ 1, 1, 2, 2, 3, 3] } assert_template_result('123','{%for item in array%}{%ifchanged%}{{item}}{% endifchanged %}{%endfor%}',assigns) test/standard_tag_test.rb 8f45647aa37d784163980e9e23e4e515d5ecfd70 Tobias Lütke tobi@jadedpixel.com http://github.com/tobi/liquid/commit/63f9a05223070337021164eabc06059bfafd20d9 63f9a05223070337021164eabc06059bfafd20d9 2008-05-08T14:17:41-07:00 2008-05-08T14:17:41-07:00 Implemented reversed flag on for loops {% for a in b reversed %} 681e5d7e9d1dca228008033dc911c5f3cc6a0b94 Tobias Lütke tobi@jadedpixel.com