invoiceninja/app/Import/Transformers/Csv/ExpenseTransformer.php

<?php

namespace App\Import\Transformers\Csv;

use App\Import\Transformers\BaseTransformer;

/**
 * Class InvoiceTransformer.
 */
class ExpenseTransformer extends BaseTransformer {
	/**
	 * @param $data
	 *
	 * @return bool|array
	 */
	public function transform( $data ) {
		$clientId = isset( $data['expense.client'] ) ? $this->getClientId( $data['expense.client'] ) : null;

		return [
			'company_id'            => $this->maps['company']->id,
			'amount'                => $this->getFloat( $data, 'expense.amount' ),
			'currency_id'           => $this->getCurrencyByCode( $data, 'expense.currency_id' ),
			'vendor_id'             => isset( $data['expense.vendor'] ) ? $this->getVendorId( $data['expense.vendor'] ) : null,
			'client_id'             => isset( $data['expense.client'] ) ? $this->getClientId( $data['expense.client'] ) : null,
			'date'		            => isset( $data['expense.date'] ) ? date( 'Y-m-d', strtotime( $data['expense.date'] ) ) : null,
			'public_notes'          => $this->getString( $data, 'expense.public_notes' ),
			'private_notes'         => $this->getString( $data, 'expense.private_notes' ),
			'expense_category_id'   => isset( $data['expense.category'] ) ? $this->getExpenseCategoryId( $data['expense.category'] ) : null,
			'project_id'            => isset( $data['expense.project'] ) ? $this->getProjectId( $data['expense.project'] ) : null,
			'payment_type_id'       => isset( $data['expense.payment_type'] ) ? $this->getPaymentTypeId( $data['expense.payment_type'] ) : null,
			'payment_date'          => isset( $data['expense.payment_date'] ) ? date( 'Y-m-d', strtotime( $data['expense.payment_date'] ) ) : null,
			'transaction_reference' => $this->getString( $data, 'expense.transaction_reference' ),
			'should_be_invoiced'    => $clientId ? true : false,
		];
	}
}