setConnection('mysql')->belongsTo(ChartOfAccount::class); } public function invoices() { return $this->setConnection('mysql')->belongsToMany(Invoice::class, config('database.connections.mysql.database') . '.invoice_services'); } public function unitPrices() { return $this->belongsToMany(UnitPrice::class, 'service_unit_prices') ->withPivot('discount'); } }