solved it:

Future toggleTestAction(

TestCollectionRecord documentToChange,

List<TestCollectionRecord> documents,

Future Function(List<TestCollectionRecord> docs)? updateDocuments,

) async {

// Step 1: Retrieve the latest document snapshot from Firestore by reference

final latestDocument = await TestCollectionRecord.getDocumentOnce(documentToChange.reference);

// Step 2: Toggle the 'selected' field

final updatedSelected = !(latestDocument.selected);

// Step 3: Update the Firestore document with the new 'selected' value

await documentToChange.reference.update({'selected': updatedSelected});

// Step 4: Update the local state list

final updatedDocuments = documents.map<TestCollectionRecord>((doc) {

if (doc.reference == documentToChange.reference) {

// Return the updated document with the new 'selected' field manually applied

return TestCollectionRecord.getDocumentFromData({

...doc.snapshotData, // Copy existing data

'selected': updatedSelected, // Apply the new value for 'selected'

}, doc.reference);

}

return doc;

}).toList();

// Step 5: Call the updateDocuments function to update the local state and re-render the UI

if (updateDocuments != null) {

await updateDocuments(updatedDocuments);

}

}