Tutorials - Drupal

Example:

Change default settings of PhpStorm.

File -> Default settings -> Editor -> Code Style -> PHP

Drupal recommends less than 80 characters per line.
Set "Tab size", "Indent" and "Continuation indent" to 2

1. Install java

Install Java 8 on Ubuntu
sudo add-apt-repository ppa:webupd8team/java
sudo apt-get update
sudo apt-get install oracle-java8-installer

Verify Java Inatallation
sudo apt-get install oracle-java8-set-default
java -version

When you remove a module manually or re import a database, some times you have a message like "The following module is missing from the file system...". this is due to deleted modules.

In this example, we will use a field to get tags list, the number of tags dynamic.

Simple taxonomy autocomplete field.

Example:
$form['tagtest'] = [
  '#type' => 'entity_autocomplete',
  '#target_type' => 'taxonomy_term',
  '#title' => 'Taxonomy Term',
];

To Show more than 100 terms in taxonomy administration (overview) page, You must set the terms_per_page_admin of taxonomy.settings.

Note : On drupal the best practice is use drupal behaviors but not JS or Jquery codes such as:
<button onclick='myFunction()'>Click</button>

keyvalue.expirable service allow to save Key / Value variable in the database.

Example:

// Save without date limit.
\Drupal::service('keyvalue.expirable')->get('my_module')->set('my_var', 123);

Drush allow to download and install drupal core, drupal modules and drupal themes.
Note : It is recommended to use composer to manage drupal 8, modules and themes.