Merge pull request formtastic#674 from cthiel/master

Fix all check_boxes being checked if collection given as array

lib/formtastic/inputs/base/collections.rb

@@ -82,7 +82,7 @@ def collection_for_boolean
         def send_or_call(duck, object)
           if duck.respond_to?(:call)
             duck.call(object)
-          else
+          elsif object.respond_to? duck.to_sym
             object.send(duck)
           end
         end

lib/formtastic/inputs/check_boxes_input.rb

@@ -153,13 +153,7 @@ def disabled?(value)
 
       def selected_values
         if object.respond_to?(method)
-          if options[:collection].is_a?(Array) and
-              options[:collection].flatten.all? {|i| i.is_a?(String) or i.is_a?(Integer)}
-
-            selected_items = options[:collection]
-          else
-            selected_items = [object.send(method)].compact.flatten
-          end
+          selected_items = [object.send(method)].compact.flatten
 
           [*selected_items.map { |o| send_or_call_or_object(value_method, o) }].compact
         else

spec/inputs/check_boxes_input_spec.rb

@@ -410,6 +410,10 @@
         output_buffer.should have_tag("form li fieldset ol li label[@for='author_post_ids_#{post.last}']")
       end
     end
+
+    it "should not check any items" do
+      output_buffer.should have_tag('form li input[@checked]', :count => 0)
+    end    
   end
 
 end