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Home/ Questions/Q 5972199
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Editorial Team
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Editorial Team
Asked: May 22, 20262026-05-22T20:37:28+00:00 2026-05-22T20:37:28+00:00

I have a migration AddAuthenticableToUser. (rake db:migrate:up VERSION=..) works fine, but when I’m trying

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I have a migration AddAuthenticableToUser. (rake db:migrate:up VERSION=..) works fine, but when I’m trying to rollback a migration (rake db:migrate:down VERSION=..) it doesn’t works. Any errors or warnings. Could you help me with this ?

def self.up
  change_table :users do |t|
    t.token_authenticatable
  end
  add_index :users, :authentication_token, :unique => true
end

def self.down
  remove_index :users, :authentication_token                                                                                                                      
  remove_column :users, :authentication_token
end                                                                                                                                                                                                                                                                                                                                         
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  1. Editorial Team
    Editorial Team
    2026-05-22T20:37:28+00:00Added an answer on May 22, 2026 at 8:37 pm

    This should be the trick. I think you named your table token_authenticatable and then tried to remove authentication_token.

    def self.up
      create_table :reviews do |t|
        t.column :authentication_token
      end
      add_index :users, :authentication_token, :unique => true
    end
    
    def self.down
      remove_index :users, :authentication_token                                                                                                                      
      remove_column :users, :authentication_token
    end
    
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