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