Add collection_check_boxes helper

[Carlos Antonio da Silva + Rafael Mendonça França]

1 files changed, 30 insertions, 0 deletions

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