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d6cbb27e7b
Having a huge array to whitelist options is not the proper way to handle this case. This means that the ActiveModel::Errors object should know about the options given in *all* validators and break the extensibility added by the validators itself. If the intent is to whitelist options before sending them to I18n, each validator should clean its respective options instead of throwing the responsibility to the Errors object.
This reverts commit bc1c8d58ec.
53 lines
2.8 KiB
Ruby
53 lines
2.8 KiB
Ruby
module ActiveModel
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module Validations
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class AcceptanceValidator < EachValidator
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def initialize(options)
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super(options.reverse_merge(:allow_nil => true, :accept => "1"))
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end
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def validate_each(record, attribute, value)
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unless value == options[:accept]
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record.errors.add(attribute, :accepted, :default => options[:message])
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end
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end
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def setup(klass)
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# Note: instance_methods.map(&:to_s) is important for 1.9 compatibility
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# as instance_methods returns symbols unlike 1.8 which returns strings.
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attr_readers = attributes.reject { |name| klass.attribute_method?(name) }
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attr_writers = attributes.reject { |name| klass.attribute_method?("#{name}=") }
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klass.send(:attr_reader, *attr_readers)
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klass.send(:attr_writer, *attr_writers)
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end
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end
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module HelperMethods
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# Encapsulates the pattern of wanting to validate the acceptance of a terms of service check box (or similar agreement). Example:
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#
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# class Person < ActiveRecord::Base
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# validates_acceptance_of :terms_of_service
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# validates_acceptance_of :eula, :message => "must be abided"
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# end
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#
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# If the database column does not exist, the +terms_of_service+ attribute is entirely virtual. This check is
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# performed only if +terms_of_service+ is not +nil+ and by default on save.
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#
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# Configuration options:
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# * <tt>:message</tt> - A custom error message (default is: "must be accepted").
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# * <tt>:on</tt> - Specifies when this validation is active (default is <tt>:save</tt>, other options <tt>:create</tt>, <tt>:update</tt>).
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# * <tt>:allow_nil</tt> - Skip validation if attribute is +nil+ (default is true).
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# * <tt>:accept</tt> - Specifies value that is considered accepted. The default value is a string "1", which
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# makes it easy to relate to an HTML checkbox. This should be set to +true+ if you are validating a database
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# column, since the attribute is typecast from "1" to +true+ before validation.
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# * <tt>:if</tt> - Specifies a method, proc or string to call to determine if the validation should
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# occur (e.g. <tt>:if => :allow_validation</tt>, or <tt>:if => 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>:unless</tt> - Specifies a method, proc or string to call to determine if the validation should
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# not occur (e.g. <tt>:unless => :skip_validation</tt>, 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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def validates_acceptance_of(*attr_names)
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validates_with AcceptanceValidator, _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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