Drupal and Git: A collaborative development workflow

--- Drupal and Git +++ A collaborative development workﬂow Wesley Penner and Joshua Schroeder Drupal Camp Alberta 2010 September 11, 2010

A brief history ๏ We build Drupal sites... ๏ ...on shared development servers... ๏ ...and it usually works reasonably well. 2

When it doesn’t work ๏ We want a good code history ๏ Old [production] sites need new features ๏ Working on a large product with discrete use cases 3

We’re book smart... ๏ Our vision at the time of proposing this session... ๏ ...vs. our reality in the past few months. ๏ We don’t really know what we’re doing... ๏ ...but here’s what we’ve learned so far. 4

http://www.ﬂickr.com/photos/xtop/4088401761/ 5

Control your code ๏ Are you using a version control system? ๏ CVS, SVN, Git, Mercurial, Bazaar 6

Why choose Git? ๏ If it’s good enough for Drupal.org... (Maybe not the best justiﬁcation. Case in point: CVS) ๏ But if you’re a contributor, you’ll be using it soon anyways ๏ Distributed version control. Commit anywhere. ๏ Easy branching and merging ๏ Efﬁcient, even with large projects with long histories 7

Conﬁguring Git ๏ Tell git who you are: $ git config --global user.name "Your Name Comes Here" $ git config --global user.email you@yourdomain.example.com 8

Seven Basic Commands ๏ These commands are a must ๏ add / commit ๏ push / pull ๏ clone (--bare) ๏ branch ๏ merge 9

Getting Git Going 10

The trouble with Drupal ๏ Conﬁguration and settings stored in the database ๏ How can you collaboratively build a site? 12

Shared dev sites ๏ Who broke the site? ๏ Somebody overwrote my work. ๏ How do we push out updates to a production site? 13

Local development ๏ Troublesome code is sandboxed ๏ Pushing to production is even worse ๏ How to keep developers’ local copies in sync? 14

Database dump? ๏ Puts the site conﬁguration entirely into a text ﬁle ๏ Can now be version controlled ๏ Provides a revision history ๏ Make comparison easier by using drush sql-dump --ordered-dump 15

Ever try to perform a merge on a database dump? 16

Ever try to perform a merge on a database dump? 17

Move conﬁguration into code Features to the rescue 18

What’s a feature? “A feature is a collection of Drupal entities which taken together satisfy a certain use- case.” (http://drupal.org/project/features) 19

Ok, so what’s a feature? ๏ A module that bundles conﬁguration ๏ Your conﬁguration is now code-based ๏ ... and version-able ๏ Used to create a literal feature ๏ e.g. image gallery, blog, top story rotator 20

A basic example 21

Major shortcoming ๏ Majority of contrib modules aren’t compatible with Features yet (http://drupal.org/taxonomy/term/11478) ๏ “Features provides a UI and API for taking different site building components from modules with exportables and bundling them together in a single feature module.” 22

Make it exportable ๏ The more of us that build in support for Features, the more useful Features becomes ๏ CTools exportables 23

How do I do that? http://civicactions.com/blog/2009/jul/24/ using_chaos_tools_module_create_exportables 24

Revolutionizing Drupal http://developmentseed.org/blog/2009/may/29/making-and-using-features-drupal 25

Where to see it in action 26

http://www.ﬂickr.com/photos/jason_whittaker/4416219525 27

Questions www.jdschroeder.ca 28

Drupal and Git: A collaborative development workflow

by Joshua Schroeder on Sep 12, 2010

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Drupal and Git: A collaborative development workflow — Presentation Transcript