app/models/announcement_dismissal.rb
# == Schema Information
# Schema version: 20210114161442
#
# Table name: announcement_dismissals
#
# id :integer not null, primary key
# announcement_id :integer not null
# user_id :integer not null
# created_at :datetime not null
# updated_at :datetime not null
#
class AnnouncementDismissal < ApplicationRecord
belongs_to :announcement,
inverse_of: :dismissals
belongs_to :user,
inverse_of: :announcement_dismissals
validates :announcement, :user, presence: true
end