require "active_model/validations/clusivity"
module ActiveModel
# == Active \Model Inclusion \Validator
module Validations
class InclusionValidator < EachValidator #:nodoc:
include Clusivity
def validate_each(record, attribute, value)
unless include?(record, value)
record.errors.add(attribute, :inclusion, options.except(:in, :within).merge!(:value => value))
end
end
end
module HelperMethods
# Validates whether the value of the specified attribute is available in a
# particular enumerable object.
#
# class Person < ActiveRecord::Base
# validates_inclusion_of :gender, in: %w( m f )
# validates_inclusion_of :age, in: 0..99
# validates_inclusion_of :format, in: %w( jpg gif png ), message: "extension %{value} is not included in the list"
# validates_inclusion_of :states, in: ->(person) { STATES[person.country] }
# validates_inclusion_of :karma, in: :available_karmas
# end
#
# Configuration options:
# * :in - An enumerable object of available items. This can be
# supplied as a proc, lambda or symbol which returns an enumerable. If the
# enumerable is a range the test is performed with Range#cover?,
# otherwise with include?.
# * :within - A synonym(or alias) for :in
# * :message - Specifies a custom error message (default is: "is
# not included in the list").
# * :allow_nil - If set to +true+, skips this validation if the
# attribute is +nil+ (default is +false+).
# * :allow_blank - If set to +true+, skips this validation if the
# attribute is blank (default is +false+).
#
# There is also a list of default options supported by every validator:
# +:if+, +:unless+, +:on+ and +:strict+.
# See ActiveModel::Validation#validates for more information
def validates_inclusion_of(*attr_names)
validates_with InclusionValidator, _merge_attributes(attr_names)
end
end
end
end