Element API, query entries where relationship field ':empty:' AND the same relationship field with specified entry ID.
Can't seem to figure out how to do this without performing two separate queries and merging the objects together. However I don't see a way to perform this within the Element API.
The answer to this other question seems like an approach? Option 1 or Option 2? Not quite sure as this looks all foreign to me with sparse documentation, and it's not specific to my issue. How can I query entries based on a Matrix Block Type?
Seeing as you can't use ':empty:' with relatedTo, I'm stuck here.
return [
'criteria' => [
'section' => 'mySection',
/* this is the myRelatedField entries field relating to other Section Entry ID */
'relatedTo' => (['targetElement' => $otherSectionEntryId]),
/* unable to use :empty: with the relatedTo, incorporating myRelatedField :empty: below will return zero results */
/* cannot use this below */
'myRelatedField' => ':empty:'
],
'transformer' => function(Entry $entry) {
return [
'title' => $entry->title
];
}
];
UPDATE with further testing. Various tests used below in trying to use simple relations with :empty:. It looks as though ':empty:' is ignored when utilized in an array.
// results returned where relationship field is empty
'relatedDrinks' => ':empty:'
// no results returned where relationship field is empty
'relatedDrinks' => [':empty:']
// results related to drink ID returned
'relatedDrinks' => [$myDrinkId]
// results returned for drink ID, no results returned with empty
'relatedDrinks' => [':empty:', $myDrinkId]
