I have a controller which implements three behaviors: ListController, FormController, and RelationController.
There is an ajax handler in my controller. How can I access the target model when I am on the edit page? I tried using $this->formGetModel() but it returns null.

public function onAddMeaning()
{
    $targetModel = $this->formGetModel();
    $sessionKey = $this->formGetSessionKey(); 
}

Accessing formGetSessionKey() would also throw an exception: saying that form widget is null:

Call to a member function getSessionKey() on null

Why is my form widget not initialized?

Last updated 4 years ago

Hi, controllers don't have state. The controller functions are called via routes, and on each call a new controller object is created. So you need to pass model ID to the Ajax handler and then call

$this->controller->formFindModelObject($recordId);

to get the target model

Thanks. I got it working this way:

public function onAddMeaning($recordId)
{
    $targetModel = $this->formFindModelObject($recordId);
}

The interesting thing is that I didn't pass any $recordId to this function. It was provided automatically. Magic!

P.S. I found an old comment by Samuel about this (which was a reply to my comment, lol):

The ID is passed automatically, taken from the page URL, the same as a page action. Magic!

Last updated 4 years ago

Yes, the record id comes from the update page router from which the ajax call originates (update/:record_id)

I don't think it's documented anywhere, is it?

It's briefly mentioned here: https://octobercms.com/support/article/ob-19

"In either case, the AJAX method will look at the URL for parameters, just like an action would..."

Also take a minute to look this video which talks about the MVC in OctoberCMS, it's explained at this sequence: https://youtu.be/llo6xyKx3i0?list=PLfQvk5RK_e-Zim57m_CptCXYlgFT7P_sv&t=399

[EDIT] The next time I should click the @mjauvin link before talk like a Parrot ;p

In two words: the Ajax handlers receive the same parameters that the action you are currently performing in formcontroller (update/delete will receive the recordId, create won't).

Last updated 4 years ago