Question on polymorphic association

I have 3 models . Doctor, Patient and User
with following associations

class Doctor < ActiveRecord::Base
has_many :patients, :dependent => :destroy
has_one :user, :as => :userable
accepts_nested_attributes_for :user

class Patient < ActiveRecord::Base
belongs_to :doctor
has_one :user, :as => :userable
accepts_nested_attributes_for :user

class User < ActiveRecord::Base
belongs_to :userable, :polymorphic => true

I have a nested form for doctor and user as
OUTER FORM for :doctor
INNER FORM for :user

and in my users controller i have a create action as

def create
doc_attr = params[:doctor]
user_attr = doc_attr.delete(:user)
doctor =!
doctor.user.create(user_attr) ### getting error on this


When i submit the form i get the error saying undefined method create
for nil:NilClass
I know this is relatively simple. Any help will be greatly
appreciated. Thanks in advance !!!

Ok got this working. :slight_smile:

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