(int) ($this['id'] ?? 0), 'parent_id' => (int) ($this['parent_id'] ?? 0), 'invoice_number' => (string) ($this['invoice_number'] ?? ''), 'status' => (string) ($this['status'] ?? ''), 'total_amount' => (float) ($this['total_amount'] ?? 0), 'paid_amount' => (float) ($this['paid_amount'] ?? 0), 'balance' => (float) ($this['balance'] ?? 0), 'issue_date' => $this['issue_date'] ?? null, 'due_date' => $this['due_date'] ?? null, ]; } }