translate with interpolation

Author: chamnap

lib/liquid-rails/filters/translate_filter.rb

@@ -1,11 +1,12 @@
 module Liquid
   module Rails
     module TranslateFilter
-      def translate(key, locale = nil, scope = nil)
-        locale ||= ::I18n.locale.to_s
+      def translate(key, options={})
+        options = { 'locale' => ::I18n.locale.to_s }.merge(options)
 
-        @context.registers[:view].translate(key.to_s, locale: locale, scope: scope)
+        @context.registers[:view].translate(key.to_s, options.with_indifferent_access)
       end
+      alias_method :t, :translate
     end
   end
 end

spec/dummy/config/locales/en.yml

@@ -1,4 +1,5 @@
 en:
   welcome: 'Welcome everyone!'
+  welcome_name: 'Welcome, %{name}'
   links:
     home: 'Home'

spec/dummy/config/locales/km.yml

@@ -1,4 +1,5 @@
 km:
   welcome: 'សូមស្វាគមន៍'
+  welcome_name: 'សូមស្វាគមន៍ %{name}'
   links:
     home: 'ទំព័រដើម'

spec/lib/liquid-rails/filters/translate_filter_spec.rb

@@ -14,11 +14,15 @@ module Rails
       end
 
       it 'translate with specified locale' do
-        expect(::Liquid::Variable.new("'welcome' | translate: 'km'").render(context)).to eq('សូមស្វាគមន៍')
+        expect(::Liquid::Variable.new("'welcome' | translate: locale: 'km'").render(context)).to eq('សូមស្វាគមន៍')
       end
 
       it 'translate with scope' do
-        expect(::Liquid::Variable.new("'home' | translate: 'km', 'links'").render(context)).to eq('ទំព័រដើម')
+        expect(::Liquid::Variable.new("'home' | translate: locale: 'km', scope: 'links'").render(context)).to eq('ទំព័រដើម')
+      end
+
+      it 'translate with interpolation' do
+        expect(::Liquid::Variable.new("'welcome_name' | translate: locale: 'en', name: 'Jeremy'").render(context)).to eq('Welcome, Jeremy')
       end
     end
   end