Eloquent count occurrence with where clause - laravel

Question

I'm trying to do a simple query using Eloquent. My test_registrants table looks like this
I want to add new column with value of all user_id with payment_status = 1
This is my query using whereColumn
TestRegistrant::select(['test_registrants.*'])
->where('payment_status', 1)
->addSelect([
'attempt' => TestRegistrant::select(DB::raw('count(*) as attempt'))
->whereColumn('test_registrants.user_id', 'user_id')
->where(function ($query) {
$query->where('payment_status', 1);
})
]);
but I get all user_id instead
What I'm trying to achieve is this one
So what do I do wrong here? thank you

Answer 1

The reason your query is returning 3, is because it is simply counting all the records that have payment_status = 1. The whereColumn() is not working properly, because it does not reflect the right columns.
When you define an alias for the user_id column on the test_registrants table, it should work. For example, you could name it: outer_user_id. I have updated your example accordingly:
TestRegistrant::select(['test_registrants.payment_status', 'test_registrants.user_id as outer_user_id'])
->where('payment_status', 1)
->addSelect([
'attempt' => TestRegistrant::selectRaw('count(*) as attempt')
->whereColumn('test_registrants.user_id', 'outer_user_id')
->where(function ($query) {
$query->where('payment_status', 1);
})
])
->get();
Alternatively, you could also look into grouping the results, so that you can count all the rows in a specific group.