Ruby on Rails Wednesday, March 29, 2017

Use the `unless` key instead of `if` on the validation.

This will perform the validation unless the column is null, i.e., will perform validation if the column is not null.


-Jason

On Mar 29, 2017 8:35 AM, "fugee ohu" <fugee279@gmail.com> wrote:
Trying to validate presence where another field is not null
I found this example, the opposite

class Person < ApplicationRecord
  validates :surname, presence: true, if: "name.nil?"
end

How do I change the if: condition to name not nil?

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