Update for new requirement: "chỉ cần 1 sp nào đó ko đủ số lượng" 18 May 2018

 .vscode
 .vscode
 .history
 .history
+/nbproject/private/
\ No newline at end of file

@@ -32,11 +32,16 @@ class DefaultRenderer extends \Magento\Sales\Block\Adminhtml\Items\Renderer\Defa
         parent::__construct($context, $stockRegistry, $stockConfiguration, $registry, $data);
         parent::__construct($context, $stockRegistry, $stockConfiguration, $registry, $data);
 	}
 	}
 
 
-    public function getErrorOutStock($productId) {
+    public function getErrorOutStock($item) {
+        $productId = $item->getProductId();
         $_productStock = $this->_stockItemRepository->get($productId);
         $_productStock = $this->_stockItemRepository->get($productId);
+        $qtySelected = intval($item->getQty());
+        $qtyProduct = $_productStock->getQty();
         $html = '';
         $html = '';
         if(!$_productStock->getIsInStock()) {
         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>';
+            $html = '<div class="message message-error error"><div data-ui-id="messages-message-error">This product is out of stock.</div></div>';
+        }elseif($qtySelected > $qtyProduct){
+            $html = '<div class="message message-error error"><div data-ui-id="messages-message-error">This product doesn\'t have enough quantity.</div></div>';
         }
         }
         return $html;
         return $html;
     }
     }

@@ -101,8 +101,11 @@ class Save extends \Magento\Sales\Controller\Adminhtml\Order\Invoice\Save {
             $invoice = $this->invoiceService->prepareInvoice($order, $invoiceItems);
             $invoice = $this->invoiceService->prepareInvoice($order, $invoiceItems);
             foreach ($invoice->getAllItems() as $item) {
             foreach ($invoice->getAllItems() as $item) {
                 $_productStock = $this->_stockItemRepository->get($item->getProductId());
                 $_productStock = $this->_stockItemRepository->get($item->getProductId());
-                if(!$_productStock->getIsInStock()) {
-                    $this->messageManager->addError(__('Some of the products are out of stock!'));
+                $qtySelected = intval($item->getQty());
+                $qtyProduct = $_productStock->getQty();
+                if(!$_productStock->getIsInStock() || ($qtySelected > $qtyProduct)) {
+                    //$this->messageManager->addError(__('Some of the products are out of stock!'));
+                    $this->messageManager->addError(__('Some products do not have enough quantity to create invoice!'));
                     return $resultRedirect->setPath('sales/order_invoice/new/*', ['order_id' => $order->getId()]);
                     return $resultRedirect->setPath('sales/order_invoice/new/*', ['order_id' => $order->getId()]);
                 }
                 }
             }
             }

@@ -11,7 +11,7 @@
 <?php $_item = $block->getItem() ?>
 <?php $_item = $block->getItem() ?>
 <?php $block->setPriceDataObject($_item)?>
 <?php $block->setPriceDataObject($_item)?>
     <td class="col-product"><?= $block->getColumnHtml($_item, 'name') ?>
     <td class="col-product"><?= $block->getColumnHtml($_item, 'name') ?>
-    <?= $block->getErrorOutStock($_item->getProductId()) ?>
+    <?= $block->getErrorOutStock($_item) ?>
 	</td>
 	</td>
     <td class="col-price">
     <td class="col-price">
         <?= $block->getColumnHtml($_item, 'price') ?>
         <?= $block->getColumnHtml($_item, 'price') ?>