@@ -155,6 +155,26 @@ module Liquid array.last if array.respond_to?(:last) end + # addition + def plus(input, operand) + input + operand if input.respond_to?('+') + end + + # subtraction + def minus(input, operand) + input - operand if input.respond_to?('-') + end + + # multiplication + def times(input, operand) + input * operand if input.respond_to?('*') + end + + # division + def divided_by(input, operand) + input / operand if input.respond_to?('/') + end + end Template.register_filter(StandardFilters) lib/liquid/standardfilters.rb @@ -118,9 +118,25 @@ class StandardFiltersTest < Test::Unit::TestCase assert_template_result "a<br />\nb<br />\nc", "{{ source | newline_to_br }}", 'source' => "a\nb\nc" end + def test_plus + assert_template_result "2", "{{ 1 | plus:1 }}" + assert_template_result "11", "{{ '1' | plus:'1' }}" + end + def test_minus + assert_template_result "4", "{{ input | minus:operand }}", 'input' => 5, 'operand' => 1 + end + def test_times + assert_template_result "12", "{{ 3 | times:4 }}" + assert_template_result "foofoofoofoo", "{{ 'foo' | times:4 }}" + end + def test_divided_by + assert_template_result "4", "{{ 12 | divided_by:3 }}" + assert_template_result "4", "{{ 14 | divided_by:3 }}" + assert_template_result "5", "{{ 15 | divided_by:3 }}" + end end test/standard_filter_test.rb 3bfde37a53edc8502052696e53fde3758686b718 James MacAulay james@jadedpixel.com http://github.com/tobi/liquid/commit/69bc84b7774f7404067c1d553535f61a462d7313 69bc84b7774f7404067c1d553535f61a462d7313 2008-10-15T08:02:25-07:00 2008-05-12T14:11:42-07:00 Added filters for basic arithmetic 0200d8694ca77b5cbe26431910de7b6ef5c5a56d James MacAulay james@jadedpixel.com