Mrthdrb

I've a form that performs an Ajax call to a controller, but the response always is You entered an invalid Secret Key. Please refresh the page.

PereiraTech/Faturamento/Controller/Adminhtml/Ac/Index.php

<?php

namespace PereiraTechFaturamentoControllerAdminhtmlAc;

class Index extends MagentoBackendAppAction

 /**
 * @var MagentoFrameworkControllerResultJsonFactory
 */
 protected $resultJsonFactory;

public function __construct(
 MagentoBackendAppActionContext $context,
 MagentoFrameworkControllerResultJsonFactory $resultJsonFactory 
 )
 
 parent::__construct($context);
 $this->resultFactory = $resultJsonFactory;
 

 public function execute()
 
 return $this->resultJsonFactory->create()->setData(['a' => 'b']);
 //return 'test string';
 

 public function indexAction()

 //echo 'test string';
 

PereiraTech/Faturamento/view/adminhtml/web/js/form/element/options.js

define([ 
 'jquery',
 'uiRegistry', 
 'Magento_Ui/js/form/components/button',
 'Magento_Ui/js/modal/modal'
], function ($,uiRegistry, select, modal) 
 'use strict';

 return select.extend(


 action: function() 
 var ajaxRequest;
 var param = 'ajax=1';
 ajaxRequest = jQuery.ajax( 
 url: "http://localhost/magento/admin_ptech/faturamento_fat/ac/index",
 type: 'GET',
 data: param, form_key: window.FORM_KEY,
 dataType: 'json'
 );
 //Show successfully for submit message
 ajaxRequest.done(function (response, textStatus, jqXHR) 
 console.log(textStatus);
 console.log(response);
 );

 //On failure of request this function will be called
 ajaxRequest.fail(function (xhr, status, error) 
 console.log(status);
 console.log(error);
 console.log(xhr.responseText);
 //show error
 console.log('rou');
 );
 return this._super();
 ,
 );
);

routes.xml

<?xml version="1.0"?>
<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:App/etc/routes.xsd">
 <router id="admin">
 <route id="faturamento_fat" frontName="faturamento_fat">
 <module name="PereiraTech_Faturamento"/>
 </route>
 </router>
</config>

If I call just /faturamento_fat/ac/index/ I receive the dashboard html, so I've put the full url to post method.

Edit: If I change from GET to POST, the returned value is a 500 Internal server error problem

I have created a sample admin ajax sample extension for you.

Link >> https://github.com/magento1993/adiminajax

Also, you can upload your extension in git so I can check and solve.

The problem was in the type of the request, changing for POST action I was receiving 500 Internal error server, debugging this, I found that the problem was in the PHP file:

This line

$this->resultFactory = $resultJsonFactory;

Should be

$this->resultJsonFactory = $resultJsonFactory;