ruby - Generating token is returning nil in rails -

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hi trying generate token authenticate rails api client. have used generate_key_method in mode class. 

class apikey < activerecord::base  before_create :generate_access_token  validates :access_token, uniqueness: true  def generate_access_token   begin     self.access_token = securerandom.hex   end while self.class.exists?(access_token: access_token)  end end

inserts null while creating record

before_create callbacks happen after validation. in case, uniqueness validation failing , halting callback chain before before_create callbacks can triggered. can set access token before validating on create:

before_validation :generate_access_token, on: :create

please see page on active record callbacks more information , whole ordering.


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