Drupal 8

Yml vs Json

A make a small test to test YAML vs PHP performance. The result is:

Drupal 8 shiped with a powerfull cache API able to set cache according to a context. correct usage of this cache improve the site preformence greatly.

https://www.drupal.org/docs/8/api/cache-api/cache-contexts
https://www.drupal.org/node/2451661

Memcache is caching server allow you to incrise and have great performence on your site. Drupal and memcached work very well and here the full tutorial you need to install and setup memcache server and your drupal instance.

Check module exist

if (\Drupal::moduleHandler()->moduleExists('my_module')) {

    $message = 'Module exist.';

}

else {

    $message = 'Not exists.';

}

 

Method 1. (Classical way)

Use a captcha system like Math captcha, Image captcha, reCaptcha of google....

Step 1. Create a custom module and add the HOOK hook_views_data_alter(&$data). Here module : mymodule

Step 2. Alter views data, Example

You have several mthodes to override 403 / 404 System pages.

Method 1. Set 403 / 404 pages.

You can set the 403 /404 page on "Basic site settings" page

Admin -> Configuration -> System -> Basic site settings

Path /admin/config/system/site-information

Example :

$result =  array(

  '#markup' => 'Hello. This is my First Page',

);

$renderer = \Drupal::service('renderer');

$html = $renderer->render($result);

This tutorial show toy how to insert an existing views into a custom page or custom block.

Using entity_load function.

Example:

$entity = entity_load($entity_type, $id);

Using Entity Manager

Example:

$entity = \Drupal::entityTypeManager()->getStorage($entity_type)->load($id);