require 'active_model' require 'active_support/concern' require 'active_support/core_ext/array/wrap' require 'paperclip/validators/attachment_content_type_validator' require 'paperclip/validators/attachment_file_name_validator' require 'paperclip/validators/attachment_presence_validator' require 'paperclip/validators/attachment_size_validator' require 'paperclip/validators/media_type_spoof_detection_validator' require 'paperclip/validators/attachment_file_type_ignorance_validator' module Paperclip module Validators extend ActiveSupport::Concern included do extend HelperMethods include HelperMethods end ::Paperclip::REQUIRED_VALIDATORS = [AttachmentFileNameValidator, AttachmentContentTypeValidator, AttachmentFileTypeIgnoranceValidator] module ClassMethods # This method is a shortcut to validator classes that is in # "Attachment...Validator" format. It is almost the same thing as the # +validates+ method that shipped with Rails, but this is customized to # be using with attachment validators. This is helpful when you're using # multiple attachment validators on a single attachment. # # Example of using the validator: # # validates_attachment :avatar, :presence => true, # :content_type => { :content_type => "image/jpg" }, # :size => { :in => 0..10.kilobytes } # def validates_attachment(*attributes) options = attributes.extract_options!.dup Paperclip::Validators.constants.each do |constant| if constant.to_s =~ /\AAttachment(.+)Validator\Z/ validator_kind = $1.underscore.to_sym if options.has_key?(validator_kind) validator_options = options.delete(validator_kind) validator_options = {} if validator_options == true conditional_options = options.slice(:if, :unless) Array.wrap(validator_options).each do |local_options| method_name = Paperclip::Validators.const_get(constant.to_s).helper_method_name send(method_name, attributes, local_options.merge(conditional_options)) end end end end end def validate_before_processing(validator_class, options) options = options.dup attributes = options.delete(:attributes) attributes.each do |attribute| options[:attributes] = [attribute] create_validating_before_filter(attribute, validator_class, options) end end def create_validating_before_filter(attribute, validator_class, options) if_clause = options.delete(:if) unless_clause = options.delete(:unless) send(:"before_#{attribute}_post_process", :if => if_clause, :unless => unless_clause) do |*args| validator_class.new(options.dup).validate(self) end end end end end