Ruby on Rails app on Google App Engine

Question

Hey there! Can anyone point me how I could deploy my rails app to GAE? I've been reading about it, but it seems to be a fairly complicated task.

I tried with the google-appengine gem, but its not a piece of cake either.

Has there been any progress with the DataMapper adapter or I'll need to make changes to my models?

I was hoping to see a full-detail tutorial about it, but those that I found are somewhat out-of-date.

Any help would be much appreciated. Thanks guys!

Answer 1

I stumbled across this some time ago. It has been sitting in my bookmarks - have not had the opportunity to play with it though.

http://gist.github.com/268192

Hope this helps!

Answer 2

Deploying Rails on Google's App Engine has become a lot easier than it used to be. There are a couple of caveats you should be aware of:

• App Engine only supports the Python and Java environments so for Rails you will be deploying on JRuby
• App Engine's datastore is based on BigTable so you won't be able to use ActiveRecord on a relational database (if you want your datastore hosted in AppEngine). But as @Geoff Lanotte as pointed out there is a Datamapper adapter you can use
• Pre-deployment testing is done within Google's sandbox tools as opposed to things like script/server

Some other resources you might consider:

http://code.google.com/p/appengine-jruby/

http://rails-primer.appspot.com/

http://gist.github.com/335023