How to use event trigger library ?

Question

trying to understand how to use this Event listener library in codeigniter https://github.com/ericbarnes/CodeIgniter-Events

I am trying to send email on Post Submit. My post controller is as below

/**
* Posts
*/
class Posts extends MX_Controller
{

    function __construct(argument)
    {
        # code...
    }

    function post_new()
    {
        // all form validation and submission code

        Events::trigger('add_post', 'system_events', 'string');
    }
}

I have created one controller where I will register all system event

/**
* System Events
*/
class System_Events extends MX_Controller
{

    function __construct(argument)
    {
        Events::register('add_post', array($this, 'shoot_email'));
    }


    function shoot_email()
    {
        // all email code here
    }

}

But this is not sending any email on post submission. I don't actually understand how to use this event library.

I am also fine if there is any other way to register and trigger events. But not hard coded in to the system but kind of API.

Answer 1

The System_Events is never called from your post controller, try this

class System_Events extends MX_Controller{

    function __construct($eventName,$methodName){
        $this->load->library('events');
        Events::register($eventName, array($this, $methodName));
    }


    function shoot_email(){
        // all email code here
        return 'Mail Send';
    }

}

Now extend the posts controller from your system_events

class Posts extends System_Events{

    function __construct(argument){
        parent::__construct('add_post','shoot_email');//call the parent class constructor    
    }

    function post_new()
    {
        // all form validation and submission code

        Events::trigger('add_post', 'system_events', 'string');
    }
}