Rails 3 validates验证器

之前:

def validate

  if baggage >flight.baggage_allowance

     errors.add_to_base("You have too much baggage")

end 

if flight.seats.size >= flight.capacity

  errors.add_to_base("The flight is fully booked")

end

end

end

 

Rails 3:

validate :baggage_does_not_exceed_baggage_capacity, :seats_available

def baggage_does_not_exceed_baggage_capacity

errors.add(:baggage, ": The baggage limit is #{flight.baggage_allowance}") if baggage > flight.baggage_allowance

end

def seats_available

errors.add(:flight_id, "The flight is booked") if flight.seats.size >= flight.capacity

end

转载于:https://www.cnblogs.com/xiaomengzhang/p/3187471.html