How to capture Vanilla Model Events in custom addon?

neelkanth

Hello,

I want to handle BeforeSaveDiscussion event of DiscussionModel in a custom plugin. So I created a plugin with below code and enabled it.

class MyPlugin extends Gdn_Plugin
{

public function __construct()
{
    parent::__construct();
}

public function DiscussionModel_BeforeSaveDiscussion_Handler($sender, $args)
{
    echo "<pre>";
    die("hello");
}

}

But it looks like this event is not getting called because discussion gets saved but "hello" is not printed. I have checked the browser's console.

I borrowed the above from the QnA plugin (plugins/QnA/class.qna.plugin.php):

public function DiscussionModel_BeforeSaveDiscussion_Handler($Sender, $Args)
{
$Sender->Validation->ApplyRule('Type', 'Required', T('Choose whether you want to ask a question or start a discussion.'));

  $Post =& $Args['FormPostValues'];
  if ($Args['Insert'] && GetValue('Type', $Post) == 'Question') {
     $Post['QnA'] = 'Unanswered';
  }

}

Can anyone please help me out here. I might be missing a very small thing here.

Thanks.

Bleistivt

Verify that your plugin actually works first:

public function base_render_before($sender) {
    echo 'I am alive!';
}

You should see the text appear above every page.

neelkanth

@Bleistivt Thanks for reply. Yes 'I am alive!' is coming on top of page. But how should I check that my

public function DiscussionModel_BeforeSaveDiscussion_Handler($sender, $args)
{
    echo "<pre>";
    die("hello");
}

is getting called or not inside custom plugin.

neelkanth

I have tried discussionController_render_before as well but no success.

R_J

Have you solved it? From time to time I faced similar issues when working with code that I thought could be no problem, because I simply have copied it. But deleting it and typing it by hand always solved that problem and I never investigated why it didn't worked in the first place. Your code above looks good and should work