(int) ($this->resource['id'] ?? 0), 'invoice_number' => $this->resource['invoice_number'] ?? null, 'parent_id' => (int) ($this->resource['parent_id'] ?? 0), 'parent_name' => $this->resource['parent_name'] ?? null, 'school_year' => $this->resource['school_year'] ?? null, 'total_amount' => (float) ($this->resource['total_amount'] ?? 0), 'paid_amount' => (float) ($this->resource['paid_amount'] ?? 0), 'balance' => (float) ($this->resource['balance'] ?? 0), 'status' => $this->resource['status'] ?? null, 'issue_date' => $this->resource['issue_date'] ?? null, 'due_date' => $this->resource['due_date'] ?? null, 'created_at' => $this->resource['created_at'] ?? null, 'updated_at' => $this->resource['updated_at'] ?? null, ]; } }