Add collection_check_boxes helper

[Carlos Antonio da Silva + Rafael Mendonça França]

3 files changed, 35 insertions, 0 deletions

diff --git a/actionpack/lib/action_view/helpers/form_options_helper.rb b/actionpack/lib/action_view/helpers/form_options_helper.rb
index 5ca2f2abdc..96519a7428 100644
--- a/actionpack/lib/action_view/helpers/form_options_helper.rb
+++ b/actionpack/lib/action_view/helpers/form_options_helper.rb
@@ -195,6 +195,10 @@ module ActionView
         Tags::CollectionRadioButtons.new(object, method, self, collection, value_method, text_method, options, html_options).render(&block)
       end
 
+      def collection_check_boxes(object, method, collection, value_method, text_method, options = {}, html_options = {}, &block)
+        Tags::CollectionCheckBoxes.new(object, method, self, collection, value_method, text_method, options, html_options).render(&block)
+      end
+
       # Returns <tt><select></tt>, <tt><optgroup></tt> and <tt><option></tt> tags for the collection of existing return values of
       # +method+ for +object+'s class. The value returned from calling +method+ on the instance +object+ will
       # be selected. If calling +method+ returns +nil+, no selection is made without including <tt>:prompt</tt>
diff --git a/actionpack/lib/action_view/helpers/tags.rb b/actionpack/lib/action_view/helpers/tags.rb
index fa19cf2dba..c480799fe3 100644
--- a/actionpack/lib/action_view/helpers/tags.rb
+++ b/actionpack/lib/action_view/helpers/tags.rb
@@ -5,6 +5,7 @@ module ActionView
 
       autoload :Base
       autoload :CheckBox
+      autoload :CollectionCheckBoxes
       autoload :CollectionRadioButtons
       autoload :CollectionSelect
       autoload :DateSelect
diff --git a/actionpack/lib/action_view/helpers/tags/collection_check_boxes.rb b/actionpack/lib/action_view/helpers/tags/collection_check_boxes.rb
new file mode 100644
index 0000000000..d8f7a1fff6
--- /dev/null
+++ b/actionpack/lib/action_view/helpers/tags/collection_check_boxes.rb
@@ -0,0 +1,30 @@
+module ActionView
+  module Helpers
+    module Tags
+      class CollectionCheckBoxes < CollectionRadioButtons
+        delegate :check_box, :label, :to => :@template_object
+
+        def render
+          rendered_collection = render_collection(
+            @method_name, @collection, @value_method, @text_method, @options, @html_options
+          ) do |value, text, default_html_options|
+            default_html_options[:multiple] = true
+
+            if block_given?
+              yield sanitize_attribute_name(@method_name, value), text, value, default_html_options
+            else
+              check_box(@object_name, @method_name, default_html_options, value, nil) +
+                label(@object_name, sanitize_attribute_name(@method_name, value), text, :class => "collection_check_boxes")
+            end
+          end
+
+          # Prepend a hidden field to make sure something will be sent back to the
+          # server if all checkboxes are unchecked.
+          hidden = @template_object.hidden_field_tag("#{@object_name}[#{@method_name}][]", "", :id => nil)
+
+          wrap_rendered_collection(rendered_collection + hidden, @options)
+        end
+      end
+    end
+  end
+end