magento2

<?php

protected $_customerFactory;

public function __construct(
    ...
    \Magento\Customer\Model\ResourceModel\Customer\CollectionFactory $customerFactory
    ..

To create an invoice for an order that contain bundle product you have to prepare the good json.

Basically Magento has two different types of bundle products: dynamic and fixed. That's why I need to add clarification for Expected Result:
I) Bundle dynamic product:

in this code you will see how to get all Customer's Orders from Magento2 using the REST API

To hide the recently ordered product block from the left side

Create default.xml in your module or theme's view/layout folder and paste the below code.

To enable the profiler we can add it from index.php or apache/nginx conf file.

Enable Profiler from index.php:

1. Open {magento root}\pub\index.php from magento2
2. Add following line from the file $_SERVER[“MAGE_PROFILER”]=”html”;
3. Clear cache you can able to see the profiler.

Enable profiler from apache conf or magento2 .htaccess :

To flash the Catalog Images cache, first of all instantiate the Object and Event Manager in your constructor

private $objectManager;
private $eventManager;

public function __construct(
    \Magento\Framework\ObjectManagerInterface  $objectManager,
    \Magento\Framework\Event\Manager $eventManager
){
     $this->objectManager = $objectManager;
        $this->eventManager = $eventManager;
 }

After that you can clean the catalog images cache by using this two code lines

Log in to your Magento directory using SSH.

Disable RMA

• bin/magento module:disable Aheadworks_Rma
• bin/magento setup:upgrade
• rm -rf var/cache/*
• rm -rf var/page_cache/*
• rm -rf generated/*

Enable RMA

• bin/magento module:enable Aheadworks_Rma
• bin/magento setup:upgrade
• rm -rf var/cache/*
• rm -rf var/page_cache/*
• rm -rf generated/*

Step 1: Create new column and set value for the existing order

Firstly, you need to create a new column in table sales_order in your installer file 

 $setup->getConnection()->addColumn($setup->getTable('sales_order'), 'order_attribute', 'varchar(1)');

In this post, we named it “order_attribute”.

Step 2: Create extension_attributes.xml file

If you need to do any JavaScript  code after Magento gallery is loaded you can use this event in your code

<script type="text/javascript">
    require(['jquery', 'mage/gallery/gallery'], function($, gallery){
        $('[data-gallery-role=gallery-placeholder]').on('gallery:loaded', function () {
          // write your code here
        });
    });
</script>

it is the best code that i used, I hope this will help you

You can use this code to refresh the cache for single product

$objectManager =   \Magento\Framework\App\ObjectManager::getInstance();
$productR =      $objectManager ->create('\Magento\Catalog\Api\ProductRepositoryInterface');
$product = $productR->get('product_sku');
$product->cleanCache();
$this->_eventManager->dispatch('clean_cache_by_tags', ['object' => $product]);

Please initialize the objectManager and ProductRepository in your constructor