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-rw-r--r--activemodel/lib/active_model/attributes.rb44
1 files changed, 44 insertions, 0 deletions
diff --git a/activemodel/lib/active_model/attributes.rb b/activemodel/lib/active_model/attributes.rb
index b7b2f35bcc..6048ff0113 100644
--- a/activemodel/lib/active_model/attributes.rb
+++ b/activemodel/lib/active_model/attributes.rb
@@ -26,6 +26,21 @@ module ActiveModel
define_attribute_method(name)
end
+ # Returns an array of attribute names as strings
+ #
+ # class Person
+ # include ActiveModel::Attributes
+ #
+ # attribute :name, :string
+ # attribute :age, :integer
+ # end
+ #
+ # Person.attribute_names
+ # # => ["name", "age"]
+ def attribute_names
+ attribute_types.keys
+ end
+
private
def define_method_attribute=(name)
@@ -65,10 +80,39 @@ module ActiveModel
super
end
+ # Returns a hash of all the attributes with their names as keys and the values of the attributes as values.
+ #
+ # class Person
+ # include ActiveModel::Model
+ # include ActiveModel::Attributes
+ #
+ # attribute :name, :string
+ # attribute :age, :integer
+ # end
+ #
+ # person = Person.new(name: 'Francesco', age: 22)
+ # person.attributes
+ # # => {"name"=>"Francesco", "age"=>22}
def attributes
@attributes.to_hash
end
+ # Returns an array of attribute names as strings
+ #
+ # class Person
+ # include ActiveModel::Attributes
+ #
+ # attribute :name, :string
+ # attribute :age, :integer
+ # end
+ #
+ # person = Person.new
+ # person.attribute_names
+ # # => ["name", "age"]
+ def attribute_names
+ @attributes.keys
+ end
+
private
def write_attribute(attr_name, value)