CODEWITHSUNDEEP
ruby-on-railsvalidationactiverecordruby-on-rails-5
Hiroki Shirai
Hiroki Shirai

Reputation: 47

How to validate saved record without changes in ActiveRecord?

My Rails5.1.4 project ha had Station model and there are some saved records.

class Station < ApplicationRecord
end

> Station.first
# => #<Station:0x0055f5ca447d78 id: 1, name: nil>

Then I added new validation(presence checking for name).

class Station < ApplicationRecord
  with_options on: [:publishing] do
    # added new validation
    validates :name, presence: true
  end
end

Here, if validate! method called without attributes changing. validate! method returned true.

> reload!
> station = Station.first
# => #<Station:0x0055f5cf4b6228 id: 1, name: nil>
> station.validate!(context: :publishing) # without attributes changing
# => true
# expected ActiveRecord::RecordInvalid raising.

Here is an one problem for me.

I expected ActiveRecord raised ActiveRecord::RecordInvalid because I added presence validation for name.

can I do like this?

Regards

Upvotes: 1

Views: 964

Answers (2)

sghosh968
sghosh968

Reputation: 601

Try using valid?

station = Station.first
station.valid?

It should work fine :)

Note: other answers recommend using validate both should work fine as validate is an alias for valid?. Check this

Upvotes: 4

kolas
kolas

Reputation: 754

Wrong argument. Try to call it like this:

station.validate!(:publishing)

Docs: https://apidock.com/rails/v4.2.7/ActiveRecord/Validations/validate%21

Upvotes: 6

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