I'm very new to Magneto 2.3, I'm trying to get the primary key from URL, this is my code:

This is my import button, on click of this button, a function hit.

**/app/code/EC/Customimport/view/adminhtml/templates/form/import.phtml**
```
<div class="pp-buttons-container">
    <button class="import" id="<?php echo $block->getId() ?>" onclick="return false;">
        <span><span><span><?php echo 'Import'; ?></span></span></span>
    </button>
</div>
<script type="text/javascript">
	require(["jquery",'mage/url'], function($, url){
		"use strict";
		$(document).on('click','.col-action-grouped a',function(){
		});

		$(document).on('click','.import',function(){
			jQuery.ajax({
			url: '/admin/customimport/index/import',
			type: "POST",
			data: {data:'success'},
			success: function(response){
				console.log('ABCD');
			}
		});
		});
		
	});
</script>
```
This is the file and in that file their is a function `execute`, where I'm trying to get the `primary key`, please see the code below:

**/app/code/EC/Customimport/Controller/Adminhtml/Index/Import.php**
```
<?php

namespace EC\Customimport\Controller\Adminhtml\Index;

use EC\Customimport\Model\CustomimportFactory;
use Magento\Framework\Controller\ResultFactory;
use Magento\Backend\App\Action\Context;

class Import extends \Magento\Backend\App\Action
{
    protected $request;

    /**
     * @param Context $context
     */
    public function __construct(
        \Magento\Framework\App\Request\Http $request,
        Context $context,
        CustomimportFactory $modelCustomimportFactory
    ) {
        $this->request = $request;
        $this->modelCustomimportFactory = $modelCustomimportFactory;
        $this->resultFactory = $context->getResultFactory();
        parent::__construct($context);
    }

    public function execute(){
        ignore_user_abort(true);
        set_time_limit(0);

        $id = $this->request->getParams(); // all params
        print_r($id);
        exit;

        $model  = $this->modelCustomimportFactory->create()->load($id);
        $model->import();
        $resultRedirect = $this->resultFactory->create(ResultFactory::TYPE_REDIRECT);
        $resultRedirect->setPath('adminhtml/*/index');
        return $resultRedirect;
	}
}
```
[![mag][1]][1]


  [1]: https://i.sstatic.net/CjoqA.png