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How to extend field visibilty rule?


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Any field has visibility option (showif) that works perfect with field in current template. But i need to compare with the field in parent page template. Is it possible?
The task is like that: I have multiselect field in parent page - it is "Page Refference" field.   And i need field in children page compare that there is some page selected in parent multiselect field for it to show in editor.

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Maybe something like this, but I'm not entirely sure it will work, place it on ready.php:

$wire->addHookBefore('Inputfield::render', function($event){
  // the field where the field to hide exists
  $page = $inputfield->hasPage;
  $inputfield = $event->object;
  if($inputfield->name != "field_to_hide_if_parent") return;

    // maybe check for children of specific type?
    if($page->parent->template == "specific_type_of_page"){
      // the condition on the parent page?
      if($page->parent->multiselect_field->name == "some-name"){
          $inputfield->collapsed = Inputfield::collapsedHidden;
  • Thanks 1
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