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-rw-r--r--activemodel/lib/active_model/validations/format.rb5
1 files changed, 3 insertions, 2 deletions
diff --git a/activemodel/lib/active_model/validations/format.rb b/activemodel/lib/active_model/validations/format.rb
index 46a2e54fba..70799aaf23 100644
--- a/activemodel/lib/active_model/validations/format.rb
+++ b/activemodel/lib/active_model/validations/format.rb
@@ -1,5 +1,6 @@
-module ActiveModel
+require 'active_support/core_ext/regexp'
+module ActiveModel
module Validations
class FormatValidator < EachValidator # :nodoc:
def validate_each(record, attribute, value)
@@ -8,7 +9,7 @@ module ActiveModel
record_error(record, attribute, :with, value) if value.to_s !~ regexp
elsif options[:without]
regexp = option_call(record, :without)
- record_error(record, attribute, :without, value) if value.to_s =~ regexp
+ record_error(record, attribute, :without, value) if regexp.match?(value.to_s)
end
end