I've created a controller within my custom module to add items to my basket and i'm trying to make an ajax call across to it. However, I can't even call my controller currently as I get a 404 error from my ajax call.

This is how my Controller currently looks:


namespace Vendor\TestModule\Controller\Index;

use Magento\Framework\App\Action\Action;
use Magento\Framework\App\Action\Context;

class Test extends Action

    public function __construct(
        Context $context
    ) {

    public function execute()
        return "Success";

This is the ajax call in my phtml file:

var data = "";
var addToCartUrl = "<?php echo $block->getUrl('testmodule/index/test'); ?>";

    url : addToCartUrl,
    dataType : 'json',
    type : 'POST',
    data: data,
    success : function(res)
    error : function()

Here is my routes.xml file:

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

I've tried to manually visit the URL that i'm sending the ajax call to and that doesn't display anything either.

  • how did you define the route for this controller?
    – Diana
    Commented Feb 11, 2021 at 12:27
  • @DianaBotean I will add it to the question 1 sec Commented Feb 11, 2021 at 12:28
  • please try test_testmodule/index/test in call url
    – Pawan
    Commented Feb 11, 2021 at 12:38
  • shouldn't you use then 'test_testmodule' in the url (as this is your frontName)?
    – Diana
    Commented Feb 11, 2021 at 12:39
  • 2
    oh and also, i think you should use the 'standard' router id and not 'admin' if you are working on the frontend side as per your url call
    – Diana
    Commented Feb 11, 2021 at 12:44

1 Answer 1


as discussed, i see that a few corrections are needed:

  1. you should call the 'test_testmodule/index/test' url as you defined your frontName as 'test_testmodule'
  2. you should use the 'standard' routerId if you are working on the frontend side with this call
  3. you are expecting a JSON formatted response as per your AJAX call definition, so you will have to format it serverside by injecting Magento\Framework\Controller\Result\JsonFactory into a protected property (say $resultJsonFactory) inside your controller class and using it like so:
$result = $this->resultJsonFactory->create();
return $result->setData(['success' => true]);

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