1. CUSTOM DRUSH COMMANDS
HOW TO BUILD YOUR OWN CUSTOM DRUSH COMMANDS
Created by /Mike Bell @mikebell_

2. WHO?
Mike Bell
Twitter -
Drupal.org -
Where - CTI Digital - Drupal Technical Architect
@mikebell_
digital006

3. WHAT IS DRUSH?
Command line utility for Drupal
Used by most Drupal developers, an insanely powerful tool
drupal.org/project/drush

4. ALIAS UP
THE PROBLEM:
Updating aliases across multiple multiple dev machines
without the user having to go out of their way.
THE SOLUTION:
Drush command to keep aliases in sync. Prompt user for
download when using Drush.

5. CAVEAT
Insecure, Demo, Use at own risk!

6. THE TOOLS
Drush...
Composer
Symfony YAML

7. COMPOSER
WHAT IS IT?
Dependency manager for PHP.
WHY?
Used for grabbing Symfony components and creating an
autoloader for them.

8. COMPOSER EXAMPLE
{
"name": "drush/alias_up",
"description": "Provide a method to automatically upgrade a user's aliases.
"license": "GPL-2.0+",
"require": {
"symfony/yaml": "2.3.*"
}
}

9. SYMFONY/YAML
Used for parsing Yaml files into arrays.
Also used in Drupal 8 core for all config files.

10. EXAMPLE CONFIG FILE
type: git (git/http/https)
source: http://mikebell.io/alias.php
updatefreq: 1 (days)

11. THE HOOKS
Symfony Autoload
hook_drush_help()
hook_drush_command()
aliasup_init()
aliasup()
aliasup_download()
hook_drush_init()
aliasup_uninstall()

12. SYMFONY AUTOLOAD
Auto load the YAML component
require 'vendor/autoload.php';
use SymfonyComponentYamlYaml;

13. HOOK_DRUSH_HELP()
Define standard help for the command

14. HOOK_DRUSH_COMMAND()
Define your command and the short commands for running
$items['aliasup'] = array(
'description' => 'Update aliases from central server',
'callback' => 'aliasup',
'bootstrap' => DRUSH_BOOTSTRAP_DRUSH,
'examples' => array(
'drush aliasup' => 'Update aliases'
),
'aliases' => array('au')
);

15. INSTALL
1. Clone Repository
2. composer.phar install
3. cp example.config.yml
../aliasup.config.yml
4. Configure
5. Create aliases.drush.php
6. drush aui
7. drush sa --table

16. USAGE
drush au
Updates the alias file from the remote server

17. UNINSTALL
drush auuni
Removes all the code from the install.

18. LIVE DEMO
What could go wrong?

19. ANY QUESTIONS?

20. RESOURCES
Presentation resources:
- Used for presentation
- HTML shorthand
Drush API File
Drupal Answers
Reveal.js
Zen Coding
Reveal and Zen Coding Blog Post