Laravel查询多个关系

Question

I have a required to calculate the invoices status - Open, Paid, Overdue.

My table structure:

invoices:
- id
- custome_id
- total_amount
...

invoice_payments
- id
- invoice_id
- amount_received
...

Trying:

$records->whereHas('invoice', function($query) use ($val) {
    $query->whereHas('invoicePayments', function($_query){
        $_query->sum('amount_received');
    });
});

My concern is to get the status for the invoice - if invoice->sum('amount') > invoice->invoicePayment->sum('amount_received').

I want to do it with the help of whereHas functions not with database raw queries. Please suggest the way to do it.

Answer 1

This query works with pagination:

Invoice::where('total_amount', '<=', function($query) {
    $query->selectRaw('SUM(amount_received)')
        ->from('invoice_payments')
        ->where('invoice_id', DB::raw('invoices.id'));
})->paginate();