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Drupal 8 Examples for Developers

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Drupal 8, Code, Module

This is a drupal 8 contrib module allow  you (developer) to find code examples.

SSL self signed / Override certificate check

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Linux, Shell, PHP, SSL/TLS

On linux (wget)

wget --no-check-certificate https://yourdomain.com

wget --no-check-certificate https://name:pass@yourdomain.com

On Apache PHP

Open URL with name and password (Apache Htaccess, FTP ...)

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Linux, Server, PHP

Examples with username and password:

https://name:pass@yourdomain.com

ftp://name:pass@yourdomain.com

​ftp://name:pass@ftp.yourdomain.com

ssh name:pass@yourdomain.com

Examples with username:

Images processing using ImageMagick (convert)

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Shell, Linux, Images

Crop images using convert (ImageMagick)

Example (Single file):

convert input.jpg -crop 1300x950+312+72 crop.jpg

convert input.jpg -crop 1300x950-100-50 crop.jpg

Remove ctools Autosubmit on Views an From API

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Drupal 8, Code, Drupal 7

Form API :

$form['the_text_field']['#attributes']['class'][] = 'ctools-auto-submit-exclude';

OR

'#attributes' => array('class' => array('ctools-auto-submit-exclude')),

Views (using hook_form_alter)

Create a simple module for Drupal 8 - Step 3 - Create Dynamic Page/ Block

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Drupal 8, Module, Cache

In addition to the Step 2, Just add

    $form['#cache']['disabled'] = TRUE;

    $form['#cache']['max_age'] = 0;

 

SASS LESS Configuration file. config.rb

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Theming, CSS

Example 1. SASS (SCSS)

http_path = "/"

css_dir = "css"

sass_dir = "sass"

images_dir = "images"

Example 2. SASS (SCSS)

Create new content type programmatically using Configuration API

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Drupal 8, Code, Module

Module Name = my_module

Content Type = my_new_content

Create content type

Put this two files into my_module/config/install/

Views with custom Tables - hook_views_data

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Drupal 8, Code, Views, Hook

 

Officiel Documentation :

 https://api.drupal.org/api/drupal/core!modules!views!views.api.php/function/hook_views_data/8

 

Use multiple database conncetion with views_data() 

For that you must add 'database'

Compare Two entity programmatically

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Drupal 8, Code, Drupal 7

Example:

Show & Set Date and Time by Command Prompt on Linux

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Shell, Linux

To show the Date / Time on Linux

date

To show the hardware Clock (RTC) on Linux

hwclock -r

OR

hwclock --show

OR show time in UTC (Coordinated Universal Time)

hwclock --show --utc

Replacement Patterns

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Drupal 8, Code, Views

Examples of Available replacement patterns:

[title] ==

[body] == Body

[body-value] == Raw value

[body-summary] == Raw summary

[body-format] == Raw format

 

Theming : enable Twig templates Debug

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Drupal 8, Theming, Twig

Enable debugging

You enable Twig Debugging in sites/default/services.yml.

(If services.yml does not yet exist; copy default.services.yml and rename it to services.yml.)

parameters:

 twig.config:

  debug: true

Install and Update Drush on Linux

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Drupal 8, Code, Drush
# Download latest stable release using the code below or browse to github.com/drush-ops/drush/releases.
# Example: drush 8.4.5
php -r readfile('https://github.com/drush-ops/drush/releases/download/8.4.5/drush.phar'); > drush
#OR

Add Remove Fields Dynamically using Form API and Ajax

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Drupal 8, Code, Form

Example: Add/Remove 'test' Field depending on 'switch' field

Create a user account programmatically in Drupal 8

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Drupal 8, Code, User

    Here an example for create a user account programmatically in Drupal 8

 

    $language = \Drupal::languageManager()->getCurrentLanguage()->getId();

    $user = \Drupal\user\Entity\User::create();

Add twig template to a custom Module, Block or Page

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Drupal 8, Code, Theming, Twig

Step 1. Create your module and Block (/tutoriels/107/create-a-simple-block-programmatically)

Free and multiplatform wireframe tools

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What are the best Free and multiplatform wireframe tools ?

1. Pencil Project
Link : http://pencil.evolus.vn/Default.html
Platforms : Windows, Mac Linux

2.Framebox
Link : http://framebox.org/
Platforms : Online

Migrate from Drupal7 to Drupal8

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Drupal 8, Code, Drush

Example (basic)

drush migrate-upgrade --legacy-db-url=mysql://user:password@server/db --legacy-root=http://mydrupal6or7site.com

Call URL on Drupal 8, Like drupal_http_request() on D7

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Drupal 8, Code

Example :

JSON Encode and Decode

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Drupal 8, Code, JSON

Example :

use Drupal\Component\Serialization\Json;

$json = Json::encode($data);

$data = Json::decode($json);

Render Custom field with Drupal Renderer

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Drupal 8, Code, Twig, Images

Example 1, with FieldPluginBase (\Drupal\views\Plugin\views\field\FieldPluginBase)

Cache Clearing and rebuilding methods for Drupal 8

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Drupal 8, Code, Server, Drush, Cache

Site URL

1. Go to Administration > Configuration > Development > Performance

 (/admin/config/development/performance)

2. Click on "Clear all caches"

Make a Link list and Submenu

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Drupal 8, Code, Module

Example:

1. in yourmodule.links.menu.yml

yourmodule.test:

  title: Test

  parent: system.admin_config_development

  route_name: yourmodule.test

Find Entity using Drupal EntityQuery

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Drupal 8, Code, Module

You can find any entity using Drupal 8 EntityQuery System.