changed_attributes() Instance Public methods Returns a hash of the attributes

define_attribute_methods(*attr_names) Instance Public methods Declares the attributes

persisted?() Instance Public methods Indicates if the model is persisted.

attribute_method?(attribute) Instance Public methods Returns true

attribute_method_prefix(*prefixes) Instance Public methods Declares a method

eager_load!() Class Public methods

==(other) Instance Public methods Equivalent to String#<=>

attribute_alias(name) Instance Public methods Returns the original name for

keys() Instance Public methods Returns all message keys.

to_key() Instance Public methods Returns an