Update a Firestore document with its ID using Laravel-Firebase Package - laravel

Question

Can anyone please point me on how to update a firestore document with its id. I am able to create a document and update it using the laravel-firebase package by kreait.
My below code creates the document on firestore. However, how do I update this same document with the document reference or id.
$groupsRef = app('firebase.firestore')->database()->collection('groups');
$groupData = [
'groupAdmin' => auth()->user()->id."_".auth()->user()->name,
'groupDescription' => $request->group_description,
'groupIcon' => $image,
'groupId' => '',
'groupMembers' => [
auth()->user()->id."_".auth()->user()->name
],
'groupName' => $request->group_name,
'recentMessage' => '',
'recentMessageSender' => '',
'recentMessageTime' => ''
];
$groupsRef->add($groupData);
The below implementation updates the document with its name and not its reference.
$document = $groupsRef->document($request->group_name);
$groupId = $document->id();
$updatedGroupData = [
'groupAdmin' => auth()->user()->id."_".auth()->user()->name,
'groupDescription' => $request->group_description,
'groupIcon' => $request->hasFile('groupIcon') ? $image : '',
'groupId' => $groupId,
'groupMembers' => [
auth()->user()->id."_".auth()->user()->name
],
'groupName' => $request->group_name,
'recentMessage' => '',
'recentMessageSender' => '',
'recentMessageTime' => ''
];
$updatedFitfam = $document->update($updatedGroupData);

Answer 1

The Firestore add return the document reference from where you can get the document id. Then update as following :
$groupsRef = app('firebase.firestore')->database()->collection('groups');
$groupData = [
'groupAdmin' => auth()->user()->id."_".auth()->user()->name,
'groupDescription' => $request->group_description,
'groupIcon' => $image,
'groupId' => '',
'groupMembers' => [
auth()->user()->id."_".auth()->user()->name
],
'groupName' => $request->group_name,
'recentMessage' => '',
'recentMessageSender' => '',
'recentMessageTime' => ''
];
$docId = $groupsRef->add($groupData);
$updatedGroupData = [
'groupAdmin' => auth()->user()->id."_".auth()->user()->name,
'groupDescription' => $request->group_description,
'groupIcon' => $request->hasFile('groupIcon') ? $image : '',
'groupId' => $groupId,
'groupMembers' => [
auth()->user()->id."_".auth()->user()->name
],
'groupName' => $request->group_name,
'recentMessage' => '',
'recentMessageSender' => '',
'recentMessageTime' => ''
];
$updatedFitfam = $document->update($docId->id());
If you want to get the document from the $groupsRef using $request->group_name then use this workaround that should work:
$groupsRef = app('firebase.firestore')->database()->collection('groups');
$document = $groupsRef->document($request->group_name);
$snapshot = $document->get();
if ($snapshot->exists()) {
$existingData = $snapshot->data();
$updatedGroupData = [
'groupAdmin' => auth()->user()->id."_".auth()->user()->name,
'groupDescription' => $request->group_description,
'groupIcon' => $request->hasFile('groupIcon') ? $image : '',
'groupMembers' => array_merge(
$existingData['groupMembers'] ?? [],
[auth()->user()->id."_".auth()->user()->name]
),
'recentMessage' => $existingData['recentMessage'] ?? ' ',
'recentMessageSender' => $existingData['recentMessageSender'] ?? ' ',
'recentMessageTime' => $existingData['recentMessageTime'] ?? ' '
];
$document->update($updatedGroupData);
}
Reference taken from this docs