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).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] }
# end
#
# Configuration options:
# * :in - An enumerable object of available items. This can be
# supplied as a proc or lambda which returns an enumerable. If the
# enumerable is a range the test is performed with Range#cover?,
# otherwise with include?.
# * :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+).
# * :on - Specifies when this validation is active. Runs in all
# validation contexts by default (+nil+), other options are :create
# and :update.
# * :if - Specifies a method, proc or string to call to determine if
# the validation should occur (e.g. if: :allow_validation, or
# if: Proc.new { |user| user.signup_step > 2 }). The method, proc
# or string should return or evaluate to a +true+ or +false+ value.
# * :unless - Specifies a method, proc or string to call to determine
# if the validation should not occur (e.g. unless: :skip_validation,
# or unless: Proc.new { |user| user.signup_step <= 2 }). The
# method, proc or string should return or evaluate to a +true+ or
# +false+ value.
# * :strict - Specifies whether validation should be 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