Laravel: select students who do not have payment made in the month - php

Question

I want to make a list of students who did not make payment in the current month, or never made a payment.
it is possible to do with a single query builder, or eloquent function?
With the code below I can do exactly the opposite of what I want :/
$indebted = DB::table('students')->where('students.active',1)
->leftJoin('payments', 'students.id', '=', 'payments.user_id')
->whereMonth('payments.created_at','=', $today->month)
->get();

Answer 1

I don't know what value you are passing here.
$today->month
Instead of this $today->month you have to pass exact month here
Please try this
$indebted = DB::table('students')->where('students.active',1)
->leftJoin('payments', 'students.id', '=', 'payments.user_id')
->whereMonth('payments.created_at','=', 06)
->get();

Answer 2

Here is the students ids who made payments in Current month and year
$payments= DB::table('payments')
->whereMonth('created_at',date('m'))
->whereYear('created_at', date('Y'))
->pluck('user_id')->all();
use whereNotIn('id',[students ids who made payments])
$students = DB::table('students')
->whereNotIn('id',$payments)
->get();

Answer 3

You can use Raw SQL in this kind of situation
I am assuming you are using mysql database
$sql=SELECT * from students s LEFT JOIN payments p ON s.id=p.user_id
WHERE s.active=1 AND (p.created_at is NULL or MONTH(MAX(p.created_at) < MONTH(CURRENT_DATE())) )
$students = DB::connection('mysql')->select( DB::raw(" $sql"));
foreach($students as $aStudent){
...
....
}

Answer 4

you can get student who do not have payments made in this month
$students = App\student::whereDoesntHave('payments', function (Builder $query) {
$query->whereMonth('payments.created_at',$today->month);
})->where('active',1)->get();