RailsConf2006 DHH keynote...

Steve Longdo — Mon, 26 Jun 2006 18:02:00 +0000

David Heinemeier Hansson's keynote was rather, um CRUD-dy :-)

It mainly focused on the importance of modelling the application domain as well as the relationships between the models, at the correct level of abstraction/encapsulation. This of course is nothing new to anyone who has been doing software development for a while.

The new part comes in with using all of the HTTP "verbs" (POST,GET,PUT,DESTROY) in Rails as a default convention. So for CRUD; Create=POST, Read=GET, Update=PUT, and Delete=DESTROY. Using this convention it is possible to build a higher level abstraction on top, tentatively called ActiveResource. He also discussed the use of respond_to, the HTTP Accept Headers, and even extensions to handle multiple input and output types from a single controller. So the same code that handles a HTML page could be reused as a webservice for example, or for returning a JavaScript representation. Definitely an area to keep an eye on.

All in all he is an excellent presenter. He definitely has a charisma that holds your attention in person. Outside of the material in his presentation he explained some of the reasons why things are the way they are in Rails. In particular the intentionally lackluster support for composite primary keys. Hearing this in person is much more effective than reading about it on a mailing list.

Musings of a Trained Monkey: Tag dhh

RailsConf2006 DHH keynote...