Migration for multiple foreign keys with the same model in Rails 6

create_meetings.rb

class CreateMeetings < ActiveRecord::Migration[6.0]
  def change
    create_table :meetings do |t|
      t.datetime :starts_at, null: false
      t.datetime :ends_at, null: false
      t.references :available_user, null: false
      t.references :requester_user, null: false

      t.timestamps
    end
  end
end

meetings.rb

class Meeting < ApplicationRecord
  belongs_to :available_user, class_name: 'User'
  belongs_to :requester_user, class_name: 'User'
end

user.rb

class User < ApplicationRecord
  has_many :available_user_meetings, class_name: 'Meeting', foreign_key: 'available_user_id'
  has_many :requester_user_meetings, class_name: 'Meeting', foreign_key: 'requester_user_id'
end

Posts about this gist:
https://dev.to/luchiago/multiple-foreign-keys-for-the-same-model-in-rails-6-7ml
https://medium.com/@lucashiago63/multiple-foreign-keys-for-the-same-model-in-rails-6-18ac4b7a7c6a