PHP / Laravel Firebase Realtime Database updating a specific field - php

Question

I'm trying to update firebase realtime database using kreait/firebase-php package.
Here's my tree:
I need to update the child of /detail/pesan/1/<unique ID> which have is_read value of false and update it to true.
Here's part of my code:
$database = $firebase->getDatabase();
$id_pesan=1;
/*
Update Firebase is_read
*/
$update = ['/is_read' => "true"];
$updatePesan_1 = $database
->getReference('chat/detail/'. $id_pesan)
->orderByChild('is_read')
->equalTo('false')
->update($update);
But i get this error :
Call to undefined method Kreait\Firebase\Database\Query::update()
when I change it to get the value first then update / set it :
$updatePesan_1 = $database
->getReference('chat/detail/'. $id_pesan)
->orderByChild('is_read')
->equalTo('false')
->getValue()
->set($update);
I get this error :
{"status":"error","error":400,"message":"Index not defined, add \".indexOn\": \"is_read\", for path \"/chat/detail/1\", to the rules"}
What I'm trying to do is filter / query database first to find child of specific tree which have is_read = false and update the value from "false" to "true".
Is it possible to do query of firebase database then updating it?
If yes how do I fix my code to achieve that?

Answer 1

Here's my solution
Okay so after many research and trial and error.
I did a couple of things :
Change the new rule to enable editing specific field on firebase database
Change the PHP code since I am unable to do filter / query then update. so I had to do it without filter / query and then updating data
1. Changes to Firebase database Rule
I change the rule to this :
{
"rules": {
".read": true,
".write": true,
"chat": {
"detail": {
"$id_pesan" :{
".indexOn": ["is_read"]
}
}
}
}
}
Some short explaination :
The data is stored in chat/detail///
since I need to be able to change what's inside I added ".indexOn" : ["is_read"] I change the rule and put indexing inside chat/detail/.
2. Change PHP code
At first what I want to do is this :
Initialize Firebase
Set references
Do Update call while query-ing field (in 1 call)
But it seems the package doesn't support what I wanted to do. so instead what I had to do is I have to query the field and get the unique ID value first. Then I made it into an Associative Array, then use it to update Database
here's the new code
//initialize
$database = $firebase->getDatabase();
//get value of all the unique ID
$getValue = $database
->getReference('chat/detail/'. $id_pesan)
->orderByChild('is_read')
->equalTo('false')
->getValue();
//initialize Array
$update = [];
//make the array necessary to update the firebase database
/*
What the Array should looks like
<Unique ID>/<variable I wanted to change> => "<new Value>"
Example :
"-IUAYS678/is_read" => "true"
"-JVHBY817/is_read" => "true"
*/
foreach($updatePesan_1 as $k => $v)
{
$update[$k. "/is_read"]="true";
}
//Update the Firebase Database
$updatePesan_1_process=$database->getReference('chat/detail/'. $id_pesan)
->update($update);
I hope this helps