Encapsulates the pattern of wanting to validate the acceptance of a terms of service check box (or similar agreement).
class Person < ActiveRecord::Base validates_acceptance_of :terms_of_service validates_acceptance_of :eula, message: 'must be abided' end
If the database column does not exist, the terms_of_service attribute is entirely virtual. This check is performed only if terms_of_service is not nil and by default on save.
:message - A custom error message (default is: “must be accepted”).
:allow_nil - Skip validation if attribute is nil (default is true).
:accept - Specifies value that is considered accepted. The default value is a string “1”, which makes it easy to relate to an HTML checkbox. This should be set to true if you are validating a database column, since the attribute is typecast from “1” to true before validation.
There is also a list of default options supported by every validator: :if, :unless, :on and :strict. See ActiveModel::Validation#validates for more information
# File activemodel/lib/active_model/validations/acceptance.rb, line 50 def validates_acceptance_of(*attr_names) validates_with AcceptanceValidator, _merge_attributes(attr_names) end