think it should be:
validates :game_id, uniqueness: {scope: :genre_id, allow_blank: true}
среда, 3 апреля 2013 г., 13:56:48 UTC+4 пользователь Lephyrius написал:
>
> I have this in a model:
> class GenreBadge < ActiveRecord::Base
>
> belongs_to :game, counter_cache: :genre_badges_count, touch: true
> belongs_to :genre
> validates :game_id, uniqueness: {scope: :genre_id}, allow_blank:
> true
>
> end
>
> When I get one existing genre badge
> genre_badge = game.genre_badges.first
> genre_badge.game_id = nil
> genre_badge.save!
>
> It creates an validation exception:
> "ActiveRecord::RecordInvalid: Validation failed: Game has already been
> taken"
>
> I already have have specified that I want to allow_blank. I really
> don't know why I get the validation error. I also tested allow_nil but
> got the same error.
>
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