Introduction to Composer

for Drupal

Drupal Camp Japan in Tokyoとは 2017

About me

Luc Bezier, Drupal & Open Source freelance.

France 出身です.

Drupal development since 2010.

URL: webizat.com

Organizer of Drupalcamp Cebu (Philippines)

Worked with BBC Worldwide, UK Government agency, Ben&Jerry’s, European commission …

Solution Architect & Consultant

Architecture and drupal developmenton large projects.

Promet Source and Composer + Drupal

Using Drupal with Composer since 2014.

Drupal 7, Drupal 8.

What is Composer?

Dependency Manager for PHP.

Declare the libraries of your project and Composer will manage (install/update) them for you.

これはいくらですか？How much does it cost?

Composer is Free and Open source.By Nils Adermann and Jordi Boggiano in 2012.

Not only Drupal, used in other PHP projects like Symfony.

BTW, the logo?

Could this man be a composer too, but what he is doing is conducting.

Why using Composer?

Never miss a dependency again.

Clear view on your project’s requirements.

Smaller amount of data in your git repo.

Makes maintenance easier.

Why using Composer?

Drupal 8 adopted Composer.

Contributed modules are using composer to manage their PHP depencencies.

Composer commands

$ composer installCreates a resource (vendor) folder and downloads all

dependencies.

$ composer updateUpdates the dependencies according to composer.json.

Composer commands

$ composer requireAdds a new dependency.

$ composer removeRemoves a dependency.

Composer commands

Debugging?

$ composer install -vvvVerbose mode will let you see what is composer doing.

Composer’s files

Simply remember

composer.json: list of dependencies for the project.

composer.lock: expected install state.

composer.json

…"require": {

"drupal/core": "~8.0","drush/drush": "^8.1",

"drupal/console": "~0.10","drupal/field_group": "~8.1@alpha",

"drupal/honeypot": "^8.1","drupal/google_analytics": "^8.2",

"drupal/avatars": "^8.1@beta"

},...

composer.json

Composer.json uses versions.

"drupal/core": "~8.0",

~8.0 is equivalent to >=8.0 <9.0

The ~ will keep our version as Drupal 8.

Doc: https://getcomposer.org/doc/articles/versions.md

composer.lock

The file composer.lock contains all informations about your dependencies, including which exact version is in

use.

"name": "drupal/core","version": "8.1.10","source": { "type": "git", "url": "https://github.com/drupal-composer/drupal-core.git", "reference": "9562f733cdefd735337bf827b3ba5ad031aba4c3"},

Composer and git

Commit composer.json and composer.lock

Do not commit the vendor folder. It would defeat the purpose of using composer to manage your

dependencies.

Composer for Drupal

Drupal 8 tarball from drupal.org ships with a composer.json and composer.lock files.

Better way: composer templates.

Composer for Drupal

Two templates to use composer with Drupal.

drupal/drupal

drupal-composer/drupal-project

(https://www.drupal.org/node/2718229)

Composer for Drupal

I recommend the drupal-composer template.

Quick installation via:$ composer create-project drupal-composer/drupal-project

https://github.com/drupal-composer/drupal-project

Composer for Drupal

Using the template for Drupal projects, files used by Drupal (such as modules) will be placed at the right

location.

Core -> web/core

Contrib modules -> web/modules/contrib

Contrib themes -> web/themes/contrib

No composer template Drupal Composer template

web

Example, the core folder is not in git.

Composer for Drupal

Need a new module?

$ composer require drupal/pathauto

Enable the module.

Composer for Drupal

Update all dependencies (can be slow).$ composer update

Update Drupal core.$ composer update drupal/core --with-dependencies

Update a module.$ composer update drupal/panels --with-dependencies

Composer for Drupal

Patches?Use composer-patches

https://github.com/cweagans/composer-patches"extra": { "patches": { "drupal/date": { "7.2.9": [ { "title": "Fix an issue with undefined index: show_remaining_days in date_field_formatter_view()", "url": "https://www.drupal.org/files/issues/date-show_remaining_days_notice-2469189-1.patch" } ] }, },}

Warning, this is the sad part.

Composer is slow.

助けて!

Composer performance

Composer is slow.

Composer will check all the available tags when updating a dependency for example.

The more dependencies, the slower. That can be an issue with some Drupal projects.

Composer performance

Update specific packages, not everything.

$ composer update drupal/panels --with-dependencies

Not

$ composer update

Composer performance

You are using Vagrant? Execute composer from your local, not the VM.

You are using Docker?Execute composer from your local, not the container.

When possible, use the latest version of PHP to execute composer.

PHP 7 (https://secure.php.net/releases/)

Composer performance

Other solutions (I haven’t tried)?

Local mirror of the packages using Satis*getcomposer.org/doc/articles/handling-private-packages-with-satis.md

Parallel download with prestissimo**github.com/hirak/prestissimo

* Thanks to Johnnie Fox for sharing.** Thanks Koyama Tetsuji for sharing.

Composer performance

Most Drupal Platform as a Service (PaaS) (Acquia, Pantheon ...) do not yet support composer.

Check the documentation.

Composer and Drupal

My blog articlewebizat.com/blog/composer-for-drupal

(feel free to comment!)

Composer and Drupal

Great article by Matt Glamanhttps://glamanate.com/blog/managing-your-drupal-pr

oject-composer

Useful links and resources:

https://github.com/drupal-composer/drupal-project

https://github.com/cweagans/composer-patches

Test it with Expresso PHP

Docker for PHP developers

Simple and easy to understand. Original images only.

Nginx + PHP (7 / 5)Apache + PHP (7 / 5)

github.com/expresso-php/expresso-php

ありがとう

Twitter @luukyb

email: luc [at] webizat.com

web: webizat.com