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rails--rails/activemodel/lib/active_model/validations/confirmation.rb
José Valim d6cbb27e7b Revert "Make ActiveModel::Errors#add_on_blank and #add_on_empty accept an options hash and make various Validators pass their (filtered) options."
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.
2010-05-15 21:55:16 +02:00

49 lines
2.6 KiB
Ruby

module ActiveModel
module Validations
class ConfirmationValidator < EachValidator
def validate_each(record, attribute, value)
confirmed = record.send(:"#{attribute}_confirmation")
return if confirmed.nil? || value == confirmed
record.errors.add(attribute, :confirmation, :default => options[:message])
end
def setup(klass)
klass.send(:attr_accessor, *attributes.map { |attribute| :"#{attribute}_confirmation" })
end
end
module HelperMethods
# Encapsulates the pattern of wanting to validate a password or email address field with a confirmation. Example:
#
# Model:
# class Person < ActiveRecord::Base
# validates_confirmation_of :user_name, :password
# validates_confirmation_of :email_address, :message => "should match confirmation"
# end
#
# View:
# <%= password_field "person", "password" %>
# <%= password_field "person", "password_confirmation" %>
#
# The added +password_confirmation+ attribute is virtual; it exists only as an in-memory attribute for validating the password.
# To achieve this, the validation adds accessors to the model for the confirmation attribute. NOTE: This check is performed
# only if +password_confirmation+ is not +nil+, and by default only on save. To require confirmation, make sure to add a presence
# check for the confirmation attribute:
#
# validates_presence_of :password_confirmation, :if => :password_changed?
#
# Configuration options:
# * <tt>:message</tt> - A custom error message (default is: "doesn't match confirmation").
# * <tt>:on</tt> - Specifies when this validation is active (default is <tt>:save</tt>, other options <tt>:create</tt>, <tt>:update</tt>).
# * <tt>:if</tt> - Specifies a method, proc or string to call to determine if the validation should
# occur (e.g. <tt>:if => :allow_validation</tt>, or <tt>:if => Proc.new { |user| user.signup_step > 2 }</tt>). The
# method, proc or string should return or evaluate to a true or false value.
# * <tt>:unless</tt> - Specifies a method, proc or string to call to determine if the validation should
# not occur (e.g. <tt>:unless => :skip_validation</tt>, or <tt>:unless => Proc.new { |user| user.signup_step <= 2 }</tt>). The
# method, proc or string should return or evaluate to a true or false value.
def validates_confirmation_of(*attr_names)
validates_with ConfirmationValidator, _merge_attributes(attr_names)
end
end
end
end