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 }
# File lib/paperclip/validators.rb, line 29 def validates_attachment(*attributes) options = attributes.extract_options!.dup Paperclip::Validators.constants.each do |constant| if constant.to_s =~ /^Attachment(.+)Validator$/ validator_kind = $1.underscore.to_sym if options.has_key?(validator_kind) options[:"attachment_#{validator_kind}"] = options.delete(validator_kind) end end end validates(*attributes + [options]) end