Removing specific value from page reference field

[torf]

Hello,

I'm trying to add or remove a value from a read only page reference field based on the fact if an image field on the same page is empty or not. The other values should not be affected.
So in my ready.php I have:

$wire->addHookBefore('Pages::saveReady', function($event){
    $page = $event->arguments(0);
    if($page->hasField("images")) {
        if($page->images->count() > 0) {
            $page->my_page_reference_field = 'Title of referenced Page'; //-> this works and adds the value to the list
            $this->message("Added value");
        } else {
            $page->my_page_reference_field->remove('Title of referenced Page'); //-> this doesn't
            $this->message("Value removed");
        }
    }
});

Adding the Value works great, but I cannot figure out how to remove a specific value.

Does anybody know how to solve this?

[bernhard]

1 hour ago, torf said:

$page->my_page_reference_field->remove('Title of referenced Page'); //-> this doesn't

Not sure but a quick shot: use ->removeAll();

[torf]

23 minutes ago, bernhard said:

Not sure but a quick shot: use ->removeAll();

Thanks - that indeed works, but removes all the values from the field. In my case I'd need to keep the other values and just delete a specific on.
But I'll keep that in mind as plan B if I do not find another solution.

[bernhard]

First you need to make sure to get the value of the page reference field as PageArray (not a single page object or such). This might depend on your setting of the field and whether output formatting is turned on or off (in the hook it should be off, but just in case...).

As ->removeAll() works it should be a PageArray in your case. In my case the field is called "pagelink" and I force the return type to be a pagearray via []

Then from the pagearray you can remove your page via remove("id=...") which is all you need I think

[torf]

Ah. Thanks a lot - It's a bit more complicated then I thought, but this will work.