Friendly_id using value from belongs_to association

Question

I have the following models:

class User < ActiveRecord::Base
  extend FriendlyId
  friendly_id :first_name, :use => :slugged

  has_one :professor
  after_create :create_professor

  def create_professor
    self.professor = Professor.create 
  end

end 

class Professor < ActiveRecord::Base
  extend FriendlyId
  friendly_id :first_name, :use => :slugged

  belongs_to :user
  def first_name
    user.first_name 
  end

end

At the time that create_professor is called and therefore the execution passes to the Professor model (self.professor = Professor.create), when it gets to try to create the slug in this method:

def first_name
  user.first_name 
end

I get an undefined method first_name for nil:NilClass, so it seems the Professor object doesn't know what is his associated user.

Any tips on how to solve this?

try `self.professor.create` instead of `self.professor = Professor.create` — Matenia Rossides, Jul 26 '12 at 21:43

score 0 · Accepted Answer · answered Aug 30 '13 at 16:03

0

You don't need:

  def create_professor
    self.professor = Professor.create 
  end

Since create_professor is created by your association.

answered Aug 30 '13 at 16:03

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I followed above procedure and i am getting error- Couldn't find Profile with id=xyz – Adt Jan 16 '15 at 16:40

Friendly_id using value from belongs_to association

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