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# frozen_string_literal: true
# :markup: markdown
require "active_support/callbacks"
module ActionCable
module Connection
# # Action Cable Connection Callbacks
#
# The [before_command](rdoc-ref:ClassMethods#before_command),
# [after_command](rdoc-ref:ClassMethods#after_command), and
# [around_command](rdoc-ref:ClassMethods#around_command) callbacks are invoked
# when sending commands to the client, such as when subscribing, unsubscribing,
# or performing an action.
#
# #### Example
#
# module ApplicationCable
# class Connection < ActionCable::Connection::Base
# identified_by :user
#
# around_command :set_current_account
#
# private
#
# def set_current_account
# # Now all channels could use Current.account
# Current.set(account: user.account) { yield }
# end
# end
# end
#
module Callbacks
extend ActiveSupport::Concern
include ActiveSupport::Callbacks
included do
define_callbacks :command
end
module ClassMethods
def before_command(*methods, &block)
set_callback(:command, :before, *methods, &block)
end
def after_command(*methods, &block)
set_callback(:command, :after, *methods, &block)
end
def around_command(*methods, &block)
set_callback(:command, :around, *methods, &block)
end
end
end
end
end
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