I cannot find any good tutorials on how to use devise_invitable and multiple companies.

I have used this gem successfully for 6 years, where a User belongs_to 1 company.

Now we need to allow users to be able to switch between companies, and get invited to multiple ones.

The switching between companies is now possible, using a new model:

class UserCompany < ApplicationRecord
  belongs_to :user
  belongs_to :company
end

Users can now switch between companies, and we use the User.company_id to remember which company is the 'current selected' one.

How do we upgrade the Invitation part to support multiple companies?

• A user could get 2 invites at the same time from 2 different companies.

We have created the app/controllers/invitations_controller.rb and added the route for that.

I am just stuck at what happens next, I guess I need some magic in the create method and should we use super there?

The invitation_* variables have been moved from the User to UserCompany model, along with is_admin which is used to mark which users have admin rights in that company.

#<UserCompany:0x000055951d8358d0
 id: 5,
 user_id: 1,
 company_id: 1,
 is_admin: true,
 disabled: false,
 created_at: Mon, 25 Sep 2023 15:53:31.461755000 UTC +00:00,
 updated_at: Mon, 25 Sep 2023 16:05:35.771460000 UTC +00:00,
 invitation_token: nil,
 invitation_created_at: nil,
 invitation_sent_at: nil,
 invitation_accepted_at: nil,
 invitation_limit: nil,
 invited_by_type: nil,
 invited_by_id: nil,
 invitations_count: 0>

This is the original controller for devise_invitable: https://github.com/scambra/devise_invitable/blob/master/app/controllers/devise/invitations_controller.rb

This is where we are at now, could be totally wrong

class InvitationsController < Devise::InvitationsController
def create
  invited_user = User.invite!(
    email: params[:user][:email], 
    company_id: current_user.company_id
  )

  UserCompany.create(
    user_id: invited_user.id,
    company_id: current_user.company_id
  )

  super
end