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module DataMapper
module Validations
##
#
# @author Guy van den Berg
# @since 0.9
class AbsenceValidator < GenericValidator
def call(target)
return true if target.validation_property_value(field_name).blank?
error_message = self.options[:message] || ValidationErrors.default_error_message(:absent, field_name)
add_error(target, error_message, field_name)
false
end
end # class AbsenceValidator
module ValidatesAbsence
extend Deprecate
##
# Validates that the specified attribute is "blank" via the attribute's
# #blank? method.
#
# @note
# dm-core's support lib adds the #blank? method to many classes,
# @see lib/dm-core/support/blank.rb (dm-core) for more information.
#
# @example [Usage]
# require 'dm-validations'
#
# class Page
# include DataMapper::Resource
#
# property :unwanted_attribute, String
# property :another_unwanted, String
# property :yet_again, String
#
# validates_absence_of :unwanted_attribute
# validates_absence_of :another_unwanted, :yet_again
#
# # a call to valid? will return false unless
# # all three attributes are blank
# end
#
def validates_absence_of(*fields)
opts = opts_from_validator_args(fields)
add_validator_to_context(opts, fields, DataMapper::Validations::AbsenceValidator)
end
deprecate :validates_absent, :validates_absence_of
end # module ValidatesAbsent
end # module Validations
end # module DataMapper
Version data entries
8 entries across 8 versions & 1 rubygems