App\Ninja\Import\CSV\InvoiceTransformer::transform PHP Method

    public function transform($data)
    {
        if (!$this->getClientId($data->name)) {
            return false;
        }
        if (isset($data->invoice_number) && $this->hasInvoice($data->invoice_number)) {
            return false;
        }
        return new Item($data, function ($data) {
            return ['client_id' => $this->getClientId($data->name), 'invoice_number' => isset($data->invoice_number) ? $this->getInvoiceNumber($data->invoice_number) : null, 'paid' => isset($data->paid) ? (double) $data->paid : null, 'po_number' => $this->getString($data, 'po_number'), 'terms' => $this->getString($data, 'terms'), 'public_notes' => $this->getString($data, 'public_notes'), 'invoice_date_sql' => isset($data->invoice_date) ? $data->invoice_date : null, 'invoice_items' => [['product_key' => '', 'notes' => $this->getString($data, 'notes'), 'cost' => isset($data->amount) ? (double) $data->amount : null, 'qty' => 1]]];
        });
    }