forgeplus/app/models/open_user.rb

# == Schema Information
#
# Table name: open_users
#
#  id         :integer          not null, primary key
#  user_id    :integer
#  type       :string(255)
#  uid        :string(255)
#  created_at :datetime         not null
#  updated_at :datetime         not null
#  extra      :text(65535)
#
# Indexes
#
#  index_open_users_on_type_and_uid  (type,uid) UNIQUE
#  index_open_users_on_user_id       (user_id)
#

class OpenUser < ApplicationRecord
  belongs_to :user

  validates :uid, presence: true, uniqueness: { scope: :type }

  serialize :extra, JSON

  def can_bind_cache_key
    "open_user:#{type}:#{uid}:can_bind"
  end
end