Laravel Eloquent Model Mass Update

Question

I would like to be able to somehow mass update an eloquent model without n+1 solutions, lets assume I have a million records here.

First Approach: (bad design)

$users = Users::all(); //1 million record
foreach($users as $user){
   $user->age = rand(5, 15);
   $user->save();
}

Second Approach: (better a little, still is a n+1 solution)

DB::beginTransaction();
$users = Users::all(); //1 million record
foreach($users as $user){
    DB::table('users')
       ->where('id', '=', $user->id)
       ->update([
           'age' => rand(5, 15),
    ]);
}
DB::commit();

I personally wish there was a simplified way to do the following:

$users = Users::all(); //1 million record
foreach($users as $user){
   $user->age = rand(5, 15);
}
$users->saveAll();

What do you recommend is a better solution that wont end up with 1 million queries? My current solution would be to chunk the records into smaller pieces and throw them in a QUEUE where it will process smaller chunks but, eh.. not sure if that is the proper way to do it either!

Answer 1

DB::raw('update users set age = FLOOR(1 + rand() * 5) where id !='.$user->id);