@@ -63,9 +63,27 @@ module Liquid end # Sort elements of the array - def sort(input) - [input].flatten.sort + # provide optional property with which to sort an array of hashes or drops + def sort(input, property = nil) + ary = [input].flatten + if property.nil? + ary.sort + elsif ary.first.respond_to?('[]') and !ary.first[property].nil? + ary.sort {|a,b| a[property] <=> b[property] } + elsif ary.first.respond_to?(property) + ary.sort {|a,b| a.send(property) <=> b.send(property) } + end end + + # map/collect on a given property + def map(input, property) + ary = [input].flatten + if ary.first.respond_to?('[]') and !ary.first[property].nil? + ary.map {|e| e[property] } + elsif ary.first.respond_to?(property) + ary.map {|e| e.send(property) } + end + end # Replace occurrences of a string with another def replace(input, string, replacement = '') lib/liquid/standardfilters.rb @@ -67,6 +67,13 @@ class StandardFiltersTest < Test::Unit::TestCase def test_sort assert_equal [1,2,3,4], @filters.sort([4,3,2,1]) + assert_equal [{"a" => 1}, {"a" => 2}, {"a" => 3}, {"a" => 4}], @filters.sort([{"a" => 4}, {"a" => 3}, {"a" => 1}, {"a" => 2}], "a") + end + + def test_map + assert_equal [1,2,3,4], @filters.map([{"a" => 1}, {"a" => 2}, {"a" => 3}, {"a" => 4}], 'a') + assert_template_result 'abc', "{{ ary | map:'foo' | map:'bar' }}", + 'ary' => [{'foo' => {'bar' => 'a'}}, {'foo' => {'bar' => 'b'}}, {'foo' => {'bar' => 'c'}}] end def test_date test/standard_filter_test.rb 3d8efe04a743d6fb4c3bc8d198f630f9896b853e James MacAulay james@jadedpixel.com http://github.com/tobi/liquid/commit/36860eab570f448a7bc11875665f0642ed0e462d 36860eab570f448a7bc11875665f0642ed0e462d 2008-10-28T07:36:05-07:00 2008-10-28T07:36:05-07:00 added array sorting and mapping on properties 2dadd028ab800c8008c9cc8d11526d8d65c9c502 James MacAulay james@jadedpixel.com