Attach credit slip as PDF to customer's email 1.7.8

[jivemoj473]

Hi everyone! 

I use PS 1.7.8 and figured out that there is no option to attach credit slip as PDF to customer's email. I believe that it is necessary to make changes to the AdminOrdersController.php on line 759 and 1022, as it was mentioned here:

Can anyone suggest how this can be implemented?
Thanks in advance. Here is the code:

Line 759:

                        if (!OrderSlip::create(
                            $order,
                            $order_detail_list,
                            $shipping_cost_amount,
                            $voucher,
                            $choosen,
                            (Tools::getValue('TaxMethod') ? false : true)
                        )) {
                            $this->errors[] = $this->trans('You cannot generate a partial credit slip.', array(), 'Admin.Orderscustomers.Notification');
                        } else {
                            Hook::exec('actionOrderSlipAdd', array('order' => $order, 'productList' => $order_detail_list, 'qtyList' => $full_quantity_list), null, false, true, false, $order->id_shop);
                            $customer = new Customer((int) ($order->id_customer));
                            $params['{lastname}'] = $customer->lastname;
                            $params['{firstname}'] = $customer->firstname;
                            $params['{id_order}'] = $order->id;
                            $params['{order_name}'] = $order->getUniqReference();
                            $orderLanguage = new Language((int) $order->id_lang);
                            @Mail::Send(
                                (int) $order->id_lang,
                                'credit_slip',
                                $this->trans(
                                    'New credit slip regarding your order',
                                    array(),
                                    'Emails.Subject',
                                    $orderLanguage->locale
                                ),
                                $params,
                                $customer->email,
                                $customer->firstname . ' ' . $customer->lastname,
                                null,
                                null,
                                null,
                                null,
                                _PS_MAIL_DIR_,
                                true,
                                (int) $order->id_shop
                            );
                        }

 

Line 1023:

                        // Generate credit slip
                        if (Tools::isSubmit('generateCreditSlip') && !count($this->errors)) {
                            $product_list = array();
                            $amount = $order_detail->unit_price_tax_incl * $full_quantity_list[$id_order_detail];

                            $choosen = false;
                            if ((int) Tools::getValue('refund_total_voucher_off') == 1) {
                                $amount -= $voucher = (float) Tools::getValue('order_discount_price');
                            } elseif ((int) Tools::getValue('refund_total_voucher_off') == 2) {
                                $choosen = true;
                                $amount = $voucher = (float) Tools::getValue('refund_total_voucher_choose');
                            }
                            foreach ($full_product_list as $id_order_detail) {
                                $order_detail = new OrderDetail((int) $id_order_detail);
                                $product_list[$id_order_detail] = array(
                                    'id_order_detail' => $id_order_detail,
                                    'quantity' => $full_quantity_list[$id_order_detail],
                                    'unit_price' => $order_detail->unit_price_tax_excl,
                                    'amount' => isset($amount) ? $amount : $order_detail->unit_price_tax_incl * $full_quantity_list[$id_order_detail],
                                );
                            }

                            $shipping = Tools::isSubmit('shippingBack') ? null : false;

                            if (!OrderSlip::create($order, $product_list, $shipping, $voucher, $choosen)) {
                                $this->errors[] = $this->trans('A credit slip cannot be generated.', array(), 'Admin.Orderscustomers.Notification');
                            } else {
                                Hook::exec('actionOrderSlipAdd', array('order' => $order, 'productList' => $full_product_list, 'qtyList' => $full_quantity_list), null, false, true, false, $order->id_shop);
                                $orderLanguage = new Language((int) $order->id_lang);
                                @Mail::Send(
                                    (int) $order->id_lang,
                                    'credit_slip',
                                    $this->trans(
                                        'New credit slip regarding your order',
                                        array(),
                                        'Emails.Subject',
                                        $orderLanguage->locale
                                    ),
                                    $params,
                                    $customer->email,
                                    $customer->firstname . ' ' . $customer->lastname,
                                    null,
                                    null,
                                    null,
                                    null,
                                    _PS_MAIL_DIR_,
                                    true,
                                    (int) $order->id_shop
                                );
                            }
                        }

Edited July 13, 2022 by jivemoj473
Added PS version to the title (see edit history)