58 lines
2.8 KiB
Ruby
58 lines
2.8 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
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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).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 => lambda{ |person| STATES[person.country] }
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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 or lambda which returns an enumerable. If the enumerable
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# is a range the test is performed with <tt>Range#cover?</tt>, otherwise with
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# <tt>include?</tt>.
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# * <tt>:message</tt> - Specifies a custom error message (default is: "is not
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# included in the list").
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# * <tt>:allow_nil</tt> - If set to true, skips this validation if the attribute
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# 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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# * <tt>:on</tt> - Specifies when this validation is active. Runs in all
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# validation contexts by default (+nil+), other options are <tt>:create</tt>
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# and <tt>:update</tt>.
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# * <tt>:if</tt> - Specifies a method, proc or string to call to determine if
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# the validation should occur (e.g. <tt>:if => :allow_validation</tt>, or
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# <tt>:if => Proc.new { |user| user.signup_step > 2 }</tt>). The method, proc
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# or string should return or evaluate to a true or false value.
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# * <tt>:unless</tt> - Specifies a method, proc or string to call to determine
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# if the validation should not occur (e.g. <tt>:unless => :skip_validation</tt>,
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# or <tt>:unless => Proc.new { |user| user.signup_step <= 2 }</tt>). The
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# method, proc or string should return or evaluate to a true or false value.
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# * <tt>:strict</tt> - Specifies whether validation should be 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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