Override Create Invoice module - version 1.0.0

+.vscode
+.history

+<?php
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+
+// @codingStandardsIgnoreFile
+
+namespace FGCT\OverrideCreateInvoice\Block\Adminhtml\Items\Renderer;
+
+use Magento\Sales\Model\Order\CreditMemo\Item as CreditMemoItem;
+use Magento\Sales\Model\Order\Invoice\Item as InvoiceItem;
+use Magento\Sales\Model\Order\Item as OrderItem;
+
+/**
+ * Order item render block
+ *
+ * @api
+ * @since 100.0.2
+ */
+class DefaultRenderer extends \Magento\Sales\Block\Adminhtml\Items\Renderer\DefaultRenderer {
+	public function __construct(
+        \Magento\Backend\Block\Template\Context $context,
+        \Magento\CatalogInventory\Api\StockRegistryInterface $stockRegistry,
+        \Magento\CatalogInventory\Api\StockConfigurationInterface $stockConfiguration,
+        \Magento\CatalogInventory\Model\Stock\StockItemRepository $stockItemRepository,
+        \Magento\Framework\Registry $registry,
+        array $data = []
+    ) {
+        $this->_coreRegistry = $registry;
+        $this->_stockItemRepository = $stockItemRepository;
+        parent::__construct($context, $stockRegistry, $stockConfiguration, $registry, $data);
+	}
+
+    public function getErrorOutStock($productId) {
+        $_productStock = $this->_stockItemRepository->get($productId);
+        $html = '';
+        if(!$_productStock->getIsInStock()) {
+            $html = '<div class="message message-error error"><div data-ui-id="messages-message-error">This product is out of stock</div></div>';
+        }
+        return $html;
+    }
+}

+<?php
+namespace FGCT\OverrideCreateInvoice\Controller\Adminhtml\Order\Invoice;
+
+use Magento\Backend\App\Action;
+use Magento\Framework\Exception\LocalizedException;
+use Magento\Framework\Registry;
+use Magento\Sales\Model\Order\Email\Sender\InvoiceSender;
+use Magento\Sales\Model\Order\Email\Sender\ShipmentSender;
+use Magento\Sales\Model\Order\ShipmentFactory;
+use Magento\Sales\Model\Order\Invoice;
+use Magento\Sales\Model\Service\InvoiceService;
+
+/**
+ * @SuppressWarnings(PHPMD.CouplingBetweenObjects)
+ */
+class Save extends \Magento\Sales\Controller\Adminhtml\Order\Invoice\Save {
+        /**
+     * @var InvoiceSender
+     */
+    protected $invoiceSender;
+
+    /**
+     * @var ShipmentSender
+     */
+    protected $shipmentSender;
+
+    /**
+     * @var ShipmentFactory
+     */
+    protected $shipmentFactory;
+
+    /**
+     * @var Registry
+     */
+    protected $registry;
+
+    /**
+     * @var InvoiceService
+     */
+    private $invoiceService;
+
+    /**
+     * @param Action\Context $context
+     * @param Registry $registry
+     * @param InvoiceSender $invoiceSender
+     * @param ShipmentSender $shipmentSender
+     * @param ShipmentFactory $shipmentFactory
+     * @param InvoiceService $invoiceService
+     */
+    public function __construct(
+        Action\Context $context,
+        Registry $registry,
+        InvoiceSender $invoiceSender,
+        ShipmentSender $shipmentSender,
+        ShipmentFactory $shipmentFactory,
+        InvoiceService $invoiceService,
+        \Magento\CatalogInventory\Model\Stock\StockItemRepository $stockItemRepository
+    ) {
+        $this->registry = $registry;
+        $this->invoiceSender = $invoiceSender;
+        $this->shipmentSender = $shipmentSender;
+        $this->shipmentFactory = $shipmentFactory;
+        $this->invoiceService = $invoiceService;
+        $this->_stockItemRepository = $stockItemRepository;
+        parent::__construct($context, $registry, $invoiceSender, $shipmentSender, $shipmentFactory, $invoiceService);
+    }
+
+    public function execute() {
+        /** @var \Magento\Backend\Model\View\Result\Redirect $resultRedirect */
+        $resultRedirect = $this->resultRedirectFactory->create();
+
+        $formKeyIsValid = $this->_formKeyValidator->validate($this->getRequest());
+        $isPost = $this->getRequest()->isPost();
+        if (!$formKeyIsValid || !$isPost) {
+            $this->messageManager->addError(__('We can\'t save the invoice right now.'));
+            return $resultRedirect->setPath('sales/order/index');
+        }
+
+        $data = $this->getRequest()->getPost('invoice');
+        $orderId = $this->getRequest()->getParam('order_id');
+
+        if (!empty($data['comment_text'])) {
+            $this->_objectManager->get(\Magento\Backend\Model\Session::class)->setCommentText($data['comment_text']);
+        }
+
+        try {
+            $invoiceData = $this->getRequest()->getParam('invoice', []);
+            $invoiceItems = isset($invoiceData['items']) ? $invoiceData['items'] : [];
+            /** @var \Magento\Sales\Model\Order $order */
+            $order = $this->_objectManager->create(\Magento\Sales\Model\Order::class)->load($orderId);
+            if (!$order->getId()) {
+                throw new \Magento\Framework\Exception\LocalizedException(__('The order no longer exists.'));
+            }
+
+            if (!$order->canInvoice()) {
+                throw new \Magento\Framework\Exception\LocalizedException(
+                    __('The order does not allow an invoice to be created.')
+                );
+            }
+
+            $invoice = $this->invoiceService->prepareInvoice($order, $invoiceItems);
+            foreach ($invoice->getAllItems() as $item) {
+                $_productStock = $this->_stockItemRepository->get($item->getProductId());
+                if(!$_productStock->getIsInStock()) {
+                    $this->messageManager->addError(__('Some of the products are out of stock!'));
+                    return $resultRedirect->setPath('sales/order_invoice/new/*', ['order_id' => $order->getId()]);
+                }
+            }
+            $invoice = false;
+            if (!$invoice) {
+                throw new LocalizedException(__('We can\'t save the invoice right now.'));
+            }
+
+            if (!$invoice->getTotalQty()) {
+                throw new \Magento\Framework\Exception\LocalizedException(
+                    __('You can\'t create an invoice without products.')
+                );
+            }
+            $this->registry->register('current_invoice', $invoice);
+            if (!empty($data['capture_case'])) {
+                $invoice->setRequestedCaptureCase($data['capture_case']);
+            }
+
+            if (!empty($data['comment_text'])) {
+                $invoice->addComment(
+                    $data['comment_text'],
+                    isset($data['comment_customer_notify']),
+                    isset($data['is_visible_on_front'])
+                );
+
+                $invoice->setCustomerNote($data['comment_text']);
+                $invoice->setCustomerNoteNotify(isset($data['comment_customer_notify']));
+            }
+
+            $invoice->register();
+
+            $invoice->getOrder()->setCustomerNoteNotify(!empty($data['send_email']));
+            $invoice->getOrder()->setIsInProcess(true);
+
+            $transactionSave = $this->_objectManager->create(
+                \Magento\Framework\DB\Transaction::class
+            )->addObject(
+                $invoice
+            )->addObject(
+                $invoice->getOrder()
+            );
+            $shipment = false;
+            if (!empty($data['do_shipment']) || (int)$invoice->getOrder()->getForcedShipmentWithInvoice()) {
+                $shipment = $this->_prepareShipment($invoice);
+                if ($shipment) {
+                    $transactionSave->addObject($shipment);
+                }
+            }
+            $transactionSave->save();
+
+            if (!empty($data['do_shipment'])) {
+                $this->messageManager->addSuccess(__('You created the invoice and shipment.'));
+            } else {
+                $this->messageManager->addSuccess(__('The invoice has been created.'));
+            }
+
+            // send invoice/shipment emails
+            try {
+                if (!empty($data['send_email'])) {
+                    $this->invoiceSender->send($invoice);
+                }
+            } catch (\Exception $e) {
+                $this->_objectManager->get(\Psr\Log\LoggerInterface::class)->critical($e);
+                $this->messageManager->addError(__('We can\'t send the invoice email right now.'));
+            }
+            if ($shipment) {
+                try {
+                    if (!empty($data['send_email'])) {
+                        $this->shipmentSender->send($shipment);
+                    }
+                } catch (\Exception $e) {
+                    $this->_objectManager->get(\Psr\Log\LoggerInterface::class)->critical($e);
+                    $this->messageManager->addError(__('We can\'t send the shipment right now.'));
+                }
+            }
+            $this->_objectManager->get(\Magento\Backend\Model\Session::class)->getCommentText(true);
+            return $resultRedirect->setPath('sales/order/view', ['order_id' => $orderId]);
+        } catch (LocalizedException $e) {
+            $this->messageManager->addError($e->getMessage());
+        } catch (\Exception $e) {
+            $this->messageManager->addError(__('We can\'t save the invoice right now.'));
+            $this->_objectManager->get(\Psr\Log\LoggerInterface::class)->critical($e);
+        }
+        return $resultRedirect->setPath('sales/*/new', ['order_id' => $orderId]);
+    }
+}

+<?xml version="1.0"?>
+<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:ObjectManager/etc/config.xsd">
+	<preference for="Magento\Sales\Block\Adminhtml\Items\Renderer\DefaultRenderer" type="FGCT\OverrideCreateInvoice\Block\Adminhtml\Items\Renderer\DefaultRenderer" />
+	<preference for="Magento\Sales\Controller\Adminhtml\Order\Invoice\Save" type="FGCT\OverrideCreateInvoice\Controller\Adminhtml\Order\Invoice\Save" />
+</config>

+<?xml version="1.0"?>
+<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="../../../../../lib/internal/Magento/Framework/Module/etc/module.xsd">
+    <module name="FGCT_OverrideCreateInvoice" setup_version="1.0.0"></module>
+</config>

+<?php
+
+\Magento\Framework\Component\ComponentRegistrar::register(
+    \Magento\Framework\Component\ComponentRegistrar::MODULE,
+    'FGCT_OverrideCreateInvoice',
+    __DIR__
+);

+<?xml version="1.0"?>
+<!--
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+-->
+<page xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:View/Layout/etc/page_configuration.xsd">
+    <update handle="sales_invoice_item_price"/>
+    <body>
+		<!-- <referenceBlock name="order_items.default" remove="true"/> -->
+    	<!-- <referenceContainer name="content">
+            <block class="FGCT\OverrideCreateInvoice\Block\Adminhtml\Items\Renderer\FgcDefaultRenderer" name="order_items.default" template="FGCT_OverrideCreateInvoice::order/invoice/create/items/renderer/default.phtml"/>
+    	</referenceContainer> -->
+        <referenceBlock name="order_items.default">
+            <action method="setTemplate">
+                <argument name="template" translate="true" xsi:type="string">FGCT_OverrideCreateInvoice::order/invoice/create/items/renderer/default.phtml</argument>
+            </action>
+        </referenceBlock>
+    </body>
+</page>

+<?php
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+
+// @codingStandardsIgnoreFile
+
+?>
+<?php /** @var $block \Magento\Sales\Block\Adminhtml\Items\Renderer\DefaultRenderer */ ?>
+<?php $_item = $block->getItem() ?>
+<?php $block->setPriceDataObject($_item)?>
+    <td class="col-product"><?= $block->getColumnHtml($_item, 'name') ?>
+    <?= $block->getErrorOutStock($_item->getProductId()) ?>
+	</td>
+    <td class="col-price">
+        <?= $block->getColumnHtml($_item, 'price') ?>
+    </td>
+    <td class="col-qty"><?= $block->getColumnHtml($_item, 'qty') ?></td>
+    <td class="col-qty-invoice">
+    <?php if ($block->canEditQty()) : ?>
+        <input type="text" class="input-text admin__control-text qty-input"
+               name="invoice[items][<?= /* @escapeNotVerified */ $_item->getOrderItemId() ?>]"
+               value="<?= /* @escapeNotVerified */ $_item->getQty()*1 ?>"/>
+    <?php else : ?>
+        <?= /* @escapeNotVerified */ $_item->getQty()*1 ?>
+    <?php endif; ?>
+    </td>
+    <td class="col-subtotal">
+        <?= $block->getColumnHtml($_item, 'subtotal') ?>
+    </td>
+    <td class="col-tax"><?= /* @escapeNotVerified */ $block->displayPriceAttribute('tax_amount') ?></td>
+    <td class="col-discount"><?= /* @escapeNotVerified */ $block->displayPriceAttribute('discount_amount') ?></td>
+    <td class="col-total last">
+        <?= $block->getColumnHtml($_item, 'total') ?>
+    </td>

+app/code/FGCT/OverrideCreateInvoice app/code/FGCT/OverrideCreateInvoice

+# GET EXTENSION
+Use git:
+
+    git clone https://github.com/devfgct/M2OverrideCreateInvoice.git
+    cp M2OverrideCreateInvoice/* magento_root/
+
+
+# INSTALLATION
+
+	bin/magento setup:upgrade