-module ActiveRecord
- module Validations
- module ClassMethods
-
- # error message when invalid UTF-8 is detected
- @@invalid_utf8_message = " is invalid UTF-8"
-
- ##
- # validation method to be included like any other validations methods
- # in the models definitions. this one checks that the named attribute
- # is a valid UTF-8 format string.
- def validates_as_utf8(*attrs)
- validates_each(attrs) do |record, attr, value|
- record.errors.add(attr, @@invalid_utf8_message) unless valid_utf8? value
- end
- end
-
- ##
- # Checks that a string is valid UTF-8 by trying to convert it to UTF-8
- # using the iconv library, which is in the standard library.
- def valid_utf8?(str)
- return true if str.nil?
- Iconv.conv("UTF-8", "UTF-8", str)
- return true
-
- rescue
- return false
- end
-
- end
+##
+# validation method to be included like any other validations methods
+# in the models definitions. this one checks that the named attribute
+# is a valid UTF-8 format string.
+class Utf8Validator < ActiveModel::EachValidator
+ def validate_each(record, attribute, value)
+ record.errors.add(attribute, " is invalid UTF-8") unless UTF8.valid? value