I have a custom grid using ui component method in back-end to show data from a custom table with columns as follows:


Here the product_id, user_id, status denotes default Product ID, Customer ID and Product Status respectively. Now I have displayed these values in the custom grid.
How can I join the default catalog_product and customer tables to show more fields like Product Name, Product Image, Product Status and Customer Name in to the grid.

Please help me out. Thank you in advance.

1 Answer 1


You can add _initSelect() method in your Collection.php file in your custom module

protected function _initSelect()
    ['cp' => $this->getTable('catalog_product')],
    'main_table.product_id = cp.entity_id',
  return $this;

You can check this module as a reference link.

Hope this will help you!

  • Let me know if it helps. Thanks. Nov 26, 2019 at 7:46
  • Do you mean the Collection class Myvendor\Mymodule\Model\ResourceModel\Pendingproducts\Collection mentioned in di.xml? (like the one in the code below:) <type name="Magento\Framework\View\Element\UiComponent\DataProvider\CollectionFactory"> <arguments> <argument name="collections" xsi:type="array"> <item name="entity_listing_data_source1" xsi:type="string">Myvendor\Mymodule\Model\ResourceModel\Pendingproducts\Collection</item> </argument> </arguments> </type>
    – coderaiseR
    Nov 27, 2019 at 10:27
  • Yes, Exactly you need to add this in your app\code\Myvendor\Mymodule\Model\ResourceModel\Pendingproducts\Collection.php file Nov 27, 2019 at 10:29
  • I added the _initSelect() method to Collection.php, but it seems like the code is not being run. Because it is not showing anything when I tried to echo the collection query or even added exit() afterwards. Any idea why?
    – coderaiseR
    Dec 4, 2019 at 5:45
  • Please check your di.xml file if you've created VirtualType there for collection then we need to add this initselect using dataprovider file. Dec 4, 2019 at 5:50

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