app/models/user_message_status.rb
# == Schema Information
#
# Table name: user_message_statuses
#
# id :integer not null, primary key
# user_id :integer
# message_id :integer
# read :boolean default(FALSE)
# created_at :datetime
# updated_at :datetime
#
class UserMessageStatus < ApplicationRecord
belongs_to :user
belongs_to :message
validates :user, :message, presence: true
scope :marked_as_read, -> { where(read: true) }
scope :not_marked_as_read, -> { where(read: false) }
class << self
def for(user)
where(user_id: user.id)
end
end
end