Rails model associations and relationships - ruby-on-rails

Question

I'm new in rails and currently trying to create an app but I can't seem to make it work. Here's my setup in model.
class User < ActiveRecord::Base
has_one :doctor, dependent: :destroy
accepts_nested_attributes :doctor
end
class Doctor < ActiveRecord::Base
belongs_to :user, :dependent => :destroy
end
In my users_controller, here's my code:
class UsersController < ApplicationController
def show
#user = current_user
# render text: #user.inspect
end
def new
#user = User.new
#user.build_doctor`
end
def create
# binding.pry
#user = User.new(user_params)
if #user.save
sign_in #user
redirect_to dashboard_path
else
render 'new'
end
end
private
def user_params
params.require(:user).permit(:role, :lastname, :firstname, :middlename, :email, :password, :password_confirmation, :doctor_attributes => [:institution, :license_number])
end
end
And my view:
<ul id="cbp-bislideshow" class="cbp-bislideshow">
<li>
<%= image_tag "blur1.jpg" %>
</li>
<li>
<%= image_tag "blur2.jpg" %>
</li>
</ul>
<% provide(:title, 'Sign Up') %>
<%= form_for(#user) do |f| %>
<div class="sign-up-wrapper divided-wrapper cf">
<div class="left-section">
<h3 class="section-title">JOIN US AND LET'S CHANGE THINGS</h3>
<div class="row">
<div class="w49 pull-left">
<%= f.text_field :firstname, class: "input-text personal ", placeholder: 'FIRSTNAME' %>
</div>
<div class="w49 pull-right">
<%= f.text_field :lastname, class: "input-text personal", placeholder: 'LASTNAME' %>
</div>
<%= f.hidden_field :role, value: :doctor %>
</div>
<div class="row">
<%# f.text_field :specialization, class: "input-text personal ", placeholder: 'SPECIALIZATION' %>
</div>
<%= f.fields_for :doctors do |p| %>
<div class="row">
<%= p.text_field :institution, class: "input-text personal ", placeholder: 'INSTITUTION' %>
</div>
<div class="row">
<%= p.text_field :license_number, class: "input-text personal ", placeholder: 'LICENSE NUMBER' %>
</div>
<% end %>
<span class="remind bottom-message"> ONCE INSIDE DON'T FORGET TO UPDATE YOUR PROFILE WITH MORE DETAILS </span>
</div>
<div class="right-section">
<h3 class="section-title"></h3>
<div class="row">
<%= f.text_field :email, class: "input-text personal ", placeholder: 'EMAIL' %>
</div>
<div class="row">
<%= f.password_field :password, class: "input-text personal ", placeholder: 'PASSWORD' %>
</div>
<div class="row">
<%= f.password_field :password_confirmation, class: "input-text personal ", placeholder: 'CONFIRM PASSWORD' %>
</div>
<div class="row cf">
<%= f.submit class: 'btn-join btn', value: 'JOIN NOW' %>
</div>
<div class="row">
SIGN UP WITH FACEBOOK / TWITTER ACCOUNT?
</div>
</div>
</div>
<% end %>
Everytimie I execute these pieces, only the user model gets populated but not the doctors table? Is there something wrong on my code?
EDIT
Changed doctors_attributes to doctor_attributes
changed #user.doctor.build`to #user.build_doctor
In the logs. I saw this error ---> Unpermitted parameters: doctors
So in theory, I think we know what's the problem, but I don't know how to fix this in the strong_parameters. Haven't tried a strong_parameter with accepted_nested_attributes_for in rails yet and this is my first time. Any solution?

Answer 1

In the fields_for, replace :doctors with :doctor. Remember that you're doing a 1 to 1 relationship.

Answer 2

In your user_params model, the attribute doctors_attributes should be doctor_attributes since it's a has_one relationship. If it was a has_many relationship, it would be doctors_attributes. The part before _attributes would be whatever the association is named.
Another note: If you want to be able to update the doctor from the user form, you should also include the id in the doctor_attributes array. Though now that I think of it, it might only be a requirement on has_many nested associations. I've never tried doing a has_one without including the id.