1 files changed, 60 insertions, 0 deletions
diff --git a/actionpack/lib/action_view/helpers/tags/check_box.rb b/actionpack/lib/action_view/helpers/tags/check_box.rb
new file mode 100644
index 0000000000..89aaad632c
--- /dev/null
+++ b/actionpack/lib/action_view/helpers/tags/check_box.rb
@@ -0,0 +1,60 @@
+module ActionView
+  module Helpers
+    module Tags
+      class CheckBox < Base #:nodoc:
+        def initialize(object_name, method_name, template_object, checked_value, unchecked_value, options)
+          @checked_value   = checked_value
+          @unchecked_value = unchecked_value
+          super(object_name, method_name, template_object, options)
+        end
+
+        def render
+          options = @options.stringify_keys
+          options["type"]     = "checkbox"
+          options["value"]    = @checked_value
+
+          if options.has_key?("checked")
+            cv = options.delete "checked"
+            checked = cv == true || cv == "checked"
+          else
+            checked = check_box_checked?(value(object))
+          end
+
+          options["checked"] = "checked" if checked
+          if options["multiple"]
+            add_default_name_and_id_for_value(@checked_value, options)
+            options.delete("multiple")
+          else
+            add_default_name_and_id(options)
+          end
+          hidden = @unchecked_value ? tag("input", "name" => options["name"], "type" => "hidden", "value" => @unchecked_value, "disabled" => options["disabled"]) : ""
+          checkbox = tag("input", options)
+          hidden + checkbox
+        end
+
+        private
+
+        def value(object)
+          object.send @method_name if object
+        end
+
+        def check_box_checked?(value)
+          case value
+          when TrueClass, FalseClass
+            value
+          when NilClass
+            false
+          when Integer
+            value != 0
+          when String
+            value == @checked_value
+          when Array
+            value.include?(@checked_value)
+          else
+            value.to_i != 0
+          end
+        end
+      end
+    end
+  end
+end