Devise with registrations and roles
Simple app to see how devise can be integrated with registrations that have a polymorphic relation to many different 'user' models.
The way it works. :drum_with_drumsticks:
A registration belongs to a user, but the user is not an actual model.
We use the option of polymorphic: true So for the Registration we do:
belongs_to :user, polymorphic: true
then on the Client & Cleaner models (to which the registration CAN belong)
Cient.rb && Cleaner.rb (same!)
has_one :registration, as: :user
The registration has to save the id & to which table the id refers so, the registration actually saves both user_id and user_type so that when you do registration.user it will look at: registration.user_type to know which table to query with the user_id
The set up with the devise form is to use a hidden_field of user_type. We send initial params when we go to this form through the links that go to this form. Through buttons such as:
<%= link_to 'Register as a client', new_registration_registration_path(user_type: 'Client')%>
Either: register as a cleaner or register as a client and both will pass along a param user_type: 'Client' || 'Cleaner'
This param is then added to the form through
<input type='hidden' value=<%= params[:user_type] %> name='user_type'>
Then added a bit of code to the Devise::RegistrationsController. This is done by creating our own RegistrationsController < Devise::RegistrationsController -> It inherits all functionality from devise. Then in the create method, we add a bit of code as so:
def create
super // execute everything in the original create method then add the user to the registration model.
if params[:user_type] == 'Client'
user = Client.create
elsif params[:user_type] == 'Cleaner'
user = Cleaner.create
end
@registration.user = user
@registration.save
// this is in dire need of a refactor, but keeping it explicit for now : )
end