Question

I’m running rails 3.2.5 with the latest Devise gem. And i have a user class that is related to an Actor class. There is a field called slug that validates fine if I use the following syntax…

validates :slug, :presence => true, :length => { :maximum => 50 }

But if I place the extra uniqueness argument

validates :slug, :presence => true, :length => { :maximum => 50 }, :uniqueness => true

it throws an error…

NoMethodError in Devise::RegistrationsController#update

undefined method `text?' for nil:NilClass

I’m not sure what is causing such.

I should also mention that in my user model class I have the following…

attr_accessible :name, :email, :password, :password_confirmation, :language, :remember_me, :profile_attributes, :admin, :slug

And that in my config file I have

config.active_record.whitelist_attributes = false #not standard nor recommended I know

Answer 1

I had the same problem and was able to get around it by separating out validates_uniqueness_of by itself. So for me

validates :username, :presence, uniqueness: { case_sensitive: false }

throws the same error (undefined method ‘text?’). while changing to

validates_presence_of :username
validates_uniqueness_of :username, { case_sensitive: false }

works just fine.