Query a table with info from another one in Eloquent - laravel

Question

I have two tables: Invoices and Clients. Each invoice have a client and each client has an expiration time for their invoices.
I want to get each invoice where the invoice date + the expiration time has passed current date.
I actualy did it with DB::select like this.
DB::select('SELECT DISTINCT i.id,(i.invoice_date+INTERVAL \'1 day\' * invoice_expiration) as expiration_date, i.invoice_date, c.invoice_expiration, c.id as client_id, c.name, i.total, i.status, c.rut FROM invoices i, clients c, invoice_cargos ic, cargos ca WHERE i.invoice_date+INTERVAL \'1 day\' * invoice_expiration < current_date AND i.client_id = c.id AND i.status not in (\'PAID\') and i.id = ic.invoice_id and ic.cargo_id = ca."id" AND i.iva = true AND ca.stage = \'APPROVED\' order by c.name, i.invoice_date ;');
But I'm having trouble translating that to eloquent.
The Invoice model has the relationship to the Client one:
Invoice Model:
public function client()
{
return $this->hasOne(Client::class,'id', 'client_id');
}

Answer 1

Laravel tries to guess, by conventions, the names of the columns in the relationships. I don't think id should be there as the second parameter. Also, you can omit client_id it would be easy for Laravel to guess that relationship, so, I'd leave it like this:
public function client()
{
return $this->hasOne(Client::class);
}
Something like this should work:
Invoice::select(DB::raw('DISTINCT i.id, (i.invoice_date + INTERVAL "1 day" * invoice_expiration) as expiration_date, i.invoice_date, c.invoice_expiration, c.id as client_id, c.name, i.total, i.status, c.rut'))
->join('clients as c', 'i.client_id', '=', 'c.id')
->join('invoice_cargos as ic', 'i.id', '=', 'ic.invoice_id')
->join('cargos as ca', 'ic.cargo_id', '=', 'ca.id')
->whereRaw('i.invoice_date + INTERVAL "1 day" * invoice_expiration < current_date')
->whereNotIn('i.status', ['PAID'])
->where('i.iva', true)
->where('ca.stage', 'APPROVED')
->orderBy('c.name')
->orderBy('i.invoice_date')
->get();
Alternatively, you can create columns in the database to store the calculated values so that you don't have to use raw SQL in your Eloquent query. For example, you could add a expiration_date column to the invoices table and update it with the calculated value when creating or updating an invoice. This would allow you to use a simple Eloquent query like this:
Invoice::where('expiration_date', '<', Carbon::now())
->whereNotIn('status', ['PAID'])
->where('iva', true)
->join('invoice_cargos as ic', 'invoices.id', '=', 'ic.invoice_id')
->join('cargos as ca', 'ic.cargo_id', '=', 'ca.id')
->where('ca.stage', 'APPROVED')
->orderBy('clients.name')
->orderBy('invoices.invoice_date')
->get();