Drupal hooks and routes not working at all - php

Question

I have a drupal module called hello_world.
I have an info file in drupal/web/modules/custom/hello_world called hello_world.info.yml that contains:
name: Hello World
description: Hello World module
type: module
core: 8.x
package: Custom
This works perfectly ; the module is in the extension list.
Now I tried to make a help hook so I made in the same folder a hello_world.module file with this code:
<?php
use Drupal\Core\Routing\RouteMatchInterface;
/**
* Implements hook_help().
*/
function hello_world_help($route_name, RouteMatchInterface $route_match) {
switch ($route_name) {
case 'help.page.hello_world':
$output = '';
$output .= '<h3>' . t('About') . '</h3>';
$output .= '<p>' . t('This is an example module.') . '</p>';
return $output;
break;
}
}
This does not work at all. The help page is not shown.
I have also tried to make a hello world page using this controller in drupal/web/modules/custom/hello_world/src/HelloWOrldCOntroller.php:
<?php
namespace Drupal\hello_world\Controller;
use Drupal\Core\Controller\ControllerBase;
/**
* Controller for the salutation message.
*/
class HelloWorldController extends ControllerBase
{
/**
* Hello World.
*
* #return string
*/
public function helloWorld()
{
return [
'#markup' => $this->t('Hello World')
];
}
}
And this route in drupal/web/modules/custom/hello_world called hello_world.routing.yml:
hello_world.hello:
path: '/hello'
defaults:
_controller:
'\Drupal\hello_world\Controller\HelloWorldController::helloWorld'
_title: 'Our first route'
requirements:
_permission: 'access content'
This does not work either, even after clearing the cache. As I said, the hello_world.info.yml works perfectly fine, but the help hook and the controller/routing does not. The rest of the core modules work. I am using Vagrant if it matters.

Answer 1

Try to reinstall the module and clear caches and routes should be intended properly otherwise will run into error
hello_world.hello:
path: '/hello'
defaults:
_controller:'\Drupal\hello_world\Controller\HelloWorldController::helloWorld'
_title: 'Our first route'
requirements:
_permission: 'access content'