couchrest_model/lib/couchrest/validation/validators/confirmation_validator.rb

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# Extracted from dm-validations 0.9.10
#
# Copyright (c) 2007 Guy van den Berg
#
# Permission is hereby granted, free of charge, to any person obtaining
# a copy of this software and associated documentation files (the
# "Software"), to deal in the Software without restriction, including
# without limitation the rights to use, copy, modify, merge, publish,
# distribute, sublicense, and/or sell copies of the Software, and to
# permit persons to whom the Software is furnished to do so, subject to
# the following conditions:
#
# The above copyright notice and this permission notice shall be
# included in all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
module CouchRest
module Validation
##
#
# @author Guy van den Berg
# @since 0.9
class ConfirmationValidator < GenericValidator
def initialize(field_name, options = {})
super
@options = options
@field_name, @confirm_field_name = field_name, (options[:confirm] || "#{field_name}_confirmation").to_sym
@options[:allow_nil] = true unless @options.has_key?(:allow_nil)
end
def call(target)
unless valid?(target)
error_message = @options[:message] || ValidationErrors.default_error_message(:confirmation, field_name)
add_error(target, error_message, field_name)
return false
end
return true
end
def valid?(target)
field_value = target.send(field_name)
return true if @options[:allow_nil] && field_value.nil?
return false if !@options[:allow_nil] && field_value.nil?
confirm_value = target.instance_variable_get("@#{@confirm_field_name}")
field_value == confirm_value
end
end # class ConfirmationValidator
module ValidatesIsConfirmed
##
# Validates that the given attribute is confirmed by another attribute.
# A common use case scenario is when you require a user to confirm their
# password, for which you use both password and password_confirmation
# attributes.
#
# @option :allow_nil<Boolean> true/false (default is true)
# @option :confirm<Symbol> the attribute that you want to validate
# against (default is firstattr_confirmation)
#
# @example [Usage]
#
# class Page < Hash
# include CouchRest::ExtendedModel
# include CouchRest::Validations
#
# property :password, String
# property :email, String
# attr_accessor :password_confirmation
# attr_accessor :email_repeated
#
# validates_confirmation_of :password
# validates_confirmation_of :email, :confirm => :email_repeated
#
# # a call to valid? will return false unless:
# # password == password_confirmation
# # and
# # email == email_repeated
#
def validates_confirmation_of(*fields)
opts = opts_from_validator_args(fields)
add_validator_to_context(opts, fields, CouchRest::Validation::ConfirmationValidator)
end
def validates_is_confirmed(*fields)
warn "[DEPRECATION] `validates_is_confirmed` is deprecated. Please use `validates_confirmation_of` instead."
validates_confirmation_of(*fields)
end
end # module ValidatesIsConfirmed
end # module Validation
end # module CouchRest