Mrthdrb

I am working on a custum module where I want a user to select some products.

Select and saving is working well. Now I want to check those product grid when user click on edit option.

Here is the code for my grid

use MagentoBackendBlockWidgetGrid;
use MagentoBackendBlockWidgetGridColumn;
use MagentoBackendBlockWidgetGridExtended;

class Product extends MagentoBackendBlockWidgetGridExtended 

 protected $_coreRegistry = null;
 protected $_productFactory;
 protected $_eventFactory;

 public function __construct(
 MagentoBackendBlockTemplateContext $context,
 MagentoBackendHelperData $backendHelper,
 MagentoCatalogModelResourceModelProductCollectionFactory $productFactory,
 MagentoCatalogModelProductAttributeSourceStatus $productStatus,
 MagentoCatalogModelProductVisibility $productVisibility,
 FMEBackgroundImageModelBackgroundImage $eventFactory, MagentoFrameworkRegistry $coreRegistry, array $data = []
 ) 
 $this->_productFactory = $productFactory;
 $this->productVisibility = $productVisibility;
 $this->productStatus = $productStatus;
 $this->_eventFactory = $eventFactory;
 $this->_coreRegistry = $coreRegistry;

 parent::__construct($context, $backendHelper, $data);
 

 protected function _construct() 
 parent::_construct();
 $this->setId('catalog_category_products');
 $this->setDefaultSort('entity_id');
 $this->setUseAjax(true);
 if ($this->getRequest()->getParam('id')) 
 $this->setDefaultFilter(['in_category' => 1]);
 
 

 public function getCategory() 
 return $this->_coreRegistry->registry('fme_backgroundimage');
 

 protected function _addColumnFilterToCollection($column) 
 if ($column->getId() == 'in_category') 
 $productIds = $this->_getSelectedProducts();

 if (empty($productIds)) 
 $productIds = 0;
 
 if ($column->getFilter()->getValue()) 
 $this->getCollection()->addFieldToFilter('entity_id', ['in' => $productIds]);
 elseif (!empty($productIds)) 
 $this->getCollection()->addFieldToFilter('entity_id', ['in' => $productIds]);
 
 else 
 parent::_addColumnFilterToCollection($column);
 
 return $this;
 

 protected function _prepareCollection()
 
 $collection = $this->_productFactory->create();
 $collection->addAttributeToSelect('thumbnail');
 $collection->addAttributeToSelect('name');
 $collection->addAttributeToSelect('sku');
 $collection->addAttributeToSelect('price');
 $collection->addAttributeToFilter('status', ['in' => $this->productStatus->getVisibleStatusIds()]);
 $collection->addOrder('entity_id', 'asc');
 $collection->setVisibility($this->productVisibility->getVisibleInSiteIds()); // return $collection;
 $this->setCollection($collection);
 return parent::_prepareCollection();
 
 protected function _prepareColumns() 

 $this->addColumn(
 'in_category', [
 'header_css_class' => 'a-center',
 'type' => 'checkbox',
 'name' => 'in_category',
 'values' => $this->_getSelectedProducts(),
 'index' => 'entity_id',
 'header_css_class' => 'col-select col-massaction',
 'column_css_class' => 'col-select col-massaction',
 'use_index' => true
 ]
 );

 $this->addColumn(
 'entity_id', [
 'header' => __('ID'),
 'sortable' => true,
 'index' => 'entity_id',
 'header_css_class' => 'col-id',
 'column_css_class' => 'col-id'
 ]
 );

 $this->addColumn('name', ['header' => __('Name'), 'index' => 'name']);
 $this->addColumn('sku', ['header' => __('SKU'), 'index' => 'sku'
 ]);
 $this->addColumn(
 'price', [
 'header' => __('Price'),
 'type' => 'currency',
 'currency_code' => (string) $this->_scopeConfig->getValue(
 MagentoDirectoryModelCurrency::XML_PATH_CURRENCY_BASE, MagentoStoreModelScopeInterface::SCOPE_STORE
 ),
 'index' => 'price'
 ]
 );

 return parent::_prepareColumns();
 

 public function getGridUrl() 
 return $this->getUrl('successpage/products/grid', ['_current' => true]);
 

 protected function _getSelectedProducts() 
 $id = $this->getRequest()->getParam('entity_id');
 $relatedProducts = $this->_eventFactory->getRelatedPro($id);

 if ($relatedProducts) 
 $relatedProducts = array_values($relatedProducts);
 return $relatedProducts;
 else 
 return [];
 
 

This grid is posting data in json format I can change response to same json format as bellow

Array
(
 [backgroundimage_id] => 5
 [title] => ABC
 [status] => 1
 [sort_order] => 12
 [date_from] => 2019-04-08
 [date_to] => 2019-04-25
 [image] => abstract-dark-wallpaper-17.jpg
 [image_catagory_id] => Array
 (
 [0] => 7
 [1] => 9
 [2] => 11
 [3] => 3
 )

 [image_cms_value] => Array
 (
 [0] => enable-cookies
 [1] => privacy-policy-cookie-restriction-mode
 [2] => about-us
 [3] => home
 )

 [entity_id] => ["2009","2016","2023","2030","2046"]
)

This line is the selected data from the grid.

[entity_id] => ["2009","2016","2023","2030","2046"]

Now you need to do code od foreach look to travers each and every entity_id from this and do your work based on that.