Change about routers between Magento 2.0.0-rc and Magento 2.0.0-rc2

Question

I have a module with routers have frontName as "ticket". It working in Magento version 2.0.0-rc. But when i install this module in Magento version 2.0.0-rc2, i request to this routers and browser return "404 Page".

How to fix this routers ?

Thanks for advice.

This is very strange, because my module working normally with Magento 2.0.0-rc.

EDIT

My code in below.

app/code/Demo/Ticket/etc/frontend/routers.xml

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

app/code/Demo/Ticket/etc/module.xml

<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"                        xsi:noNamespaceSchemaLocation="../../../../../lib/internal/Magento/Framewo rk/Module/etc/module.xsd">
   <module name="Demo_Ticket" setup_version="1.0.0">
      <sequence>
         <module name="Magento_Backend"/>
      </sequence>
   </module>
</config>

app/code/Demo/Ticket/Controller/Index/Index.php

<?php
   namespace Demo\Ticket\Controller\Index;

   class Index extends \Magento\Framework\App\Action\Action
   {
        public function __construct(
           \Magento\Framework\App\Action\Context $context,
        ){
           parent::__construct($context);
        }

       public function execute()
       {
           echo "Event Ticket";
       }
   }

app/code/Demo/Ticket/registration.php

<?php
   /**
    * Copyright © 2015 Magento. All rights reserved.
    * See COPYING.txt for license details.
    */

   \Magento\Framework\Component\ComponentRegistrar::register(
     \Magento\Framework\Component\ComponentRegistrar::MODULE,
      'Demo_Ticket',
       __DIR__
    );

Answer 1

Please make sure that you have registration.php in your module. See official guide about registering your module in Magento 2. If that does not help, check out this issue (which prevents installation of non-composer modules).

Answer 2

Make sure Your/Module/etc/frontend/routes.xml looks something like this:

<?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="standard">
        <route id="yourmodule" frontName="ticket">
            <module name="Your_Module" />
        </route>
    </router>
</config>

And you have a matching Your/Module/Controller/Index/Index.php file like this:

<?php
namespace Your\Module\Controller\Index;

class Index extends \Magento\Framework\App\Action\Action
{
    /**
     * Index action
     *
     * @return $this
     */
    public function execute()
    {
        die('tickets');
    }
}

That should display "tickets" if you navigate to http://www.example.com/ticket, make sure to adjust the Directory names to match your URL structure but that's the basics of it.

Your registration.php file should look something like this:

<?php
\Magento\Framework\Component\ComponentRegistrar::register(
    \Magento\Framework\Component\ComponentRegistrar::MODULE,
    'Your_Module',
    __DIR__
);

If all that fails try running php bin/magento setup:upgrade or clearing the caches.

Answer 3

I ran into the same problem. It was a failure in autoloader, empty declaration in composer.json

The problem only was in Magento 2.0.0-rc2 and is solved in newer versions.

in RC2, composer.json looks like:

"psr-0": {
        "_empty_": "app/code/"
   },

and it should be:

"psr-0": {
        "": "app/code/"
   },

see this issue to resolve your problem https://github.com/magento/magento2/issues/2381