scinote-web/app/models/user_assignment.rb

# frozen_string_literal: true

class UserAssignment < ApplicationRecord
  belongs_to :assignable, polymorphic: true, touch: true
  belongs_to :user_role
  belongs_to :user
  belongs_to :assigned_by, class_name: 'User', optional: true

  enum assigned: { automatically: 0, manually: 1 }, _suffix: true

  validates :user, uniqueness: { scope: :assignable }
end