clear() Instance Public methods Clear the error messages.

validates_presence_of(*attr_names) Instance Public methods Validates that the

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

set(key, value) Instance Public methods Set messages for key to

valid?(context = nil) Instance Public methods Runs all the specified validations

attribute_method_prefix(*prefixes) Instance Public methods Declares a method

validate(*args, &block) Instance Public methods Adds a validation method

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

attribute_method?(attribute) Instance Public methods Returns true

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