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mengqing/working_twelve_hour_format.rb

Created December 11, 2016 05:30
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working_twelve_hour_format.rb
class WorkingTwelveHourFormat < ActiveModel::EachValidator
def validate_each(record, attribute, value)
unless value =~ /\A(?>(?>1[0-2]|0[1-9]):[0-5][0-9] pm|(?>1[01]|0[0-9]):[0-5][0-9] am)\z/
record.errors[attribute] << (options[:message] || "is not a valid working twelve hour format")
end
end
end
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