1 files changed, 65 insertions, 0 deletions
diff --git a/actionpack/lib/action_view/helpers/tags/label.rb b/actionpack/lib/action_view/helpers/tags/label.rb
new file mode 100644
index 0000000000..74ac92ee18
--- /dev/null
+++ b/actionpack/lib/action_view/helpers/tags/label.rb
@@ -0,0 +1,65 @@
+module ActionView
+  module Helpers
+    module Tags
+      class Label < Base #:nodoc:
+        def initialize(object_name, method_name, template_object, content_or_options = nil, options = nil)
+          content_is_options = content_or_options.is_a?(Hash)
+          if content_is_options
+            options = content_or_options
+            @content = nil
+          else
+            @content = content_or_options
+          end
+
+          options ||= {}
+
+          super(object_name, method_name, template_object, options)
+        end
+
+        def render(&block)
+          options = @options.stringify_keys
+          tag_value = options.delete("value")
+          name_and_id = options.dup
+
+          if name_and_id["for"]
+            name_and_id["id"] = name_and_id["for"]
+          else
+            name_and_id.delete("id")
+          end
+
+          add_default_name_and_id_for_value(tag_value, name_and_id)
+          options.delete("index")
+          options.delete("namespace")
+          options["for"] ||= name_and_id["id"]
+
+          if block_given?
+            @template_object.label_tag(name_and_id["id"], options, &block)
+          else
+            content = if @content.blank?
+                        @object_name.gsub!(/\[(.*)_attributes\]\[\d\]/, '.\1')
+                        method_and_value = tag_value.present? ? "#{@method_name}.#{tag_value}" : @method_name
+
+                        if object.respond_to?(:to_model)
+                          key = object.class.model_name.i18n_key
+                          i18n_default = ["#{key}.#{method_and_value}".to_sym, ""]
+                        end
+
+                        i18n_default ||= ""
+                        I18n.t("#{@object_name}.#{method_and_value}", :default => i18n_default, :scope => "helpers.label").presence
+                      else
+                        @content.to_s
+                      end
+
+            content ||= if object && object.class.respond_to?(:human_attribute_name)
+                          object.class.human_attribute_name(@method_name)
+                        end
+
+            content ||= @method_name.humanize
+
+            label_tag(name_and_id["id"], content, options)
+          end
+        end
+      end
+    end
+  end
+end