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

validates_inclusion_of(*attr_names) Instance Public methods Validates whether

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

changed() Instance Public methods Returns an array with the name of the attributes

changes() Instance Public methods Returns a hash of changed attributes indicating

validates(*attributes) Instance Public methods This method is a shortcut to

eager_load!() Class Public methods

param_key(record_or_class) Class Public methods Returns string to use for params

define_attribute_methods(*attr_names) Instance Public methods Declares the attributes

to_hash(full_messages = false) Instance Public methods Returns a