attribute_method?(attribute) Instance Public methods Returns true

attribute_method_prefix(*prefixes) Instance Public methods Declares a method

new(params={}) Class Public methods Initializes a new model with the given params

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

eager_load!() Class Public methods

to_hash(full_messages = false) Instance Public methods Returns a

validates_presence_of(*attr_names) Instance Public methods Validates that the

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

previous_changes() Instance Public methods Returns a hash of attributes that

clear() Instance Public methods Clear the error messages.