=~(regexp) Instance Public methods Equivalent to String#=~. Match

validates_confirmation_of(*attr_names) Instance Public methods Encapsulates

validates_inclusion_of(*attr_names) Instance Public methods Validates whether

to_hash(full_messages = false) Instance Public methods Returns a

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

eager_load!() Class Public methods

validates_numericality_of(*attr_names) Instance Public methods Validates whether

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

add_on_empty(attributes, options = {}) Instance Public methods Will add an error

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