I am trying to set up a validation in a model to ensure that a record
can't be saved unless the foreign key it belongs_to is a valid record.
My model says:
class Admin < ActiveRecord::Base
validates_presence_of :user_id
validates_numericality_of :user_id
validates_uniqueness_of :user_id
validates_associated :user
belongs_to :user
end
but I can still create an admin record even if the associated user
record doesn't exist. I tried creating a custom validator, too, but I
couldn't test User.find(@user_id) from within the model.
How can I check for this at the model level?
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