Paginator should delegate view helper methods to template

fixes kaminari#239

lib/kaminari/helpers/paginator.rb

@@ -106,6 +106,12 @@ def render_partial(event)
         end
       end
 
+      # delegates view helper methods to @template
+      def method_missing(name, *args, &block)
+        @template.respond_to?(name) ? @template.send(name, *args, &block) : super
+      end
+      private :method_missing
+
       # Wraps a "page number" and provides some utility methods
       class PageProxy
         include Comparable

spec/helpers/helpers_spec.rb

@@ -8,10 +8,19 @@
       params { {} }
       options { {} }
       url_for {|h| "/foo?page=#{h[:page]}"}
+      link_to { "<a href='#'>link</a>" }
     end
     r
   end
 
+  describe "view helper methods delegated to template" do
+    before do
+      @paginator = Paginator.new(template, :params => {})
+    end
+    subject { @paginator.link_to("link", "#") }
+    it { should == "<a href='#'>link</a>" }
+  end
+
   describe '#params' do
     before do
       @paginator = Paginator.new(template, :params => {:controller => 'foo', :action => 'bar'})