在主干模型Ajax函数中自动传递证书值

I am using Backbone js to create an app like service. Every application has a user_id and an application_id that has been set. Each time that backbone calls a fetch(), save(), or any other RESTful/ajax function, I want the user_id and the application_id to automatically be passed with the models data.I am using Backbone js to create an app like se