Saving page gives an exception for accessing a repeater.

[salmiak]

What I'm trying to do in my template is the following. 

Get a specific page ($p)

then(simplified):

if($p->repeater_field->has("fieldA=$user")) {
	$p->a_page_reference_field->add($user);
	$p->of(false);
	$p->save();
}

The code seems to work but it gives an exception:

Can’t save page 9885: path for repeater page: Call $page->of(false); before getting/setting values that will be modified and saved. [fieldA] (in /wire/core/PagesEditor.php line 438)

Can someone help me?

[wbmnfktr]

Have you tried removing $p->of(false) ?

Otherwise have a look here: https://processwire.com/docs/fields/repeaters/

Repeater fields need to be initialized in order to accept a new item. At least it was necessary in the past. Maybe that's the case why it doesn't work.

$building = $page->buildings->getNew(); // initialize - the important part
$building->title = 'One Atlantic Center';
$building->feet_high = 880;
$building->num_floors = 50;
$building->year_built = 1997;
$building->save();
$page->buildings->add($building);
$page->save(); 

 

[salmiak]

Ok so I changed it to something like:

$rf = $p->repeater_field->get("fieldA=$user");
$rf->of(false);
if($rf) {
	$p->a_page_reference_field->add($user);
	$p->of(false);
	$p->save();
}

And now there is no exception.

I seems strange to me that its neccesary to set of(false) on the repeater item/page when I'm not changing it.