通过AJAX调用控制器的方法之一时，CodeIgniter是否调用控制器的构造函数？

Question

I need to know whether I should re-call my helper redirectIfNotLoggedIn() inside ajaxFunction, since it's already in the constructor:

class Group extends Controller {
    function Group() {  
        parent::Controller();
        redirectIfNotLoggedIn();
    }
    function ajaxFunction() {
        //I am called via AJAX
        //Do I need to call redirectIfNotLoggedIn() again?
        //Or is the constructor called whenever I access this function via AJAX?
    }
}

Any help would be appreciated :)

Answer 1

An Ajax request is nothing more than an HTTP request to your CodeIgniter application, except that it's sent by JavaScript. So your controller will still be instantiated and run as usual.

Your controller's constructor will be invoked and redirectIfNotLoggedIn() called, so you don't need to call it again.