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require 'active_model/validator'
require 'active_support/concern'
module CarrierWave
# == Active Model Presence Validator
module Validations
module ActiveModel
extend ActiveSupport::Concern
class ProcessingValidator < ::ActiveModel::EachValidator
def validate_each(record, attribute, value)
if e = record.__send__("#{attribute}_processing_error")
message = (e.message == e.class.to_s) ? :carrierwave_processing_error : e.message
record.errors.add(attribute, message)
end
end
end
class IntegrityValidator < ::ActiveModel::EachValidator
def validate_each(record, attribute, value)
if e = record.__send__("#{attribute}_integrity_error")
message = (e.message == e.class.to_s) ? :carrierwave_integrity_error : e.message
record.errors.add(attribute, message)
end
end
end
class DownloadValidator < ::ActiveModel::EachValidator
def validate_each(record, attribute, value)
if e = record.__send__("#{attribute}_download_error")
message = (e.message == e.class.to_s) ? :carrierwave_download_error : e.message
record.errors.add(attribute, message)
end
end
end
module HelperMethods
##
# Makes the record invalid if the file couldn't be uploaded due to an integrity error
#
# Accepts the usual parameters for validations in Rails (:if, :unless, etc...)
#
def validates_integrity_of(*attr_names)
validates_with IntegrityValidator, _merge_attributes(attr_names)
end
##
# Makes the record invalid if the file couldn't be processed (assuming the process failed
# with a CarrierWave::ProcessingError)
#
# Accepts the usual parameters for validations in Rails (:if, :unless, etc...)
#
def validates_processing_of(*attr_names)
validates_with ProcessingValidator, _merge_attributes(attr_names)
end
#
##
# Makes the record invalid if the remote file couldn't be downloaded
#
# Accepts the usual parameters for validations in Rails (:if, :unless, etc...)
#
def validates_download_of(*attr_names)
validates_with DownloadValidator, _merge_attributes(attr_names)
end
end
included do
extend HelperMethods
include HelperMethods
end
end
end
end
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