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

    public function transform($data)
    {
        if (!$this->getClientId($data->client_name)) {
            return false;
        }
        if ($this->hasInvoice($data->ref)) {
            return false;
        }
        return new Item($data, function ($data) {
            return ['client_id' => $this->getClientId($data->client_name), 'invoice_number' => $this->getInvoiceNumber($data->ref), 'po_number' => $this->getString($data, 'po_number'), 'invoice_date_sql' => $data->date, 'due_date_sql' => $data->due_date, 'invoice_footer' => $this->getString($data, 'footer'), 'paid' => (double) $data->paid, 'invoice_items' => [['product_key' => '', 'notes' => $this->getString($data, 'description'), 'cost' => (double) $data->total, 'qty' => 1]]];
        });
    }