On Demand AJAX and Templates
DWR, which is a great framework that is easy to use and quick to get
started with. On my recent trials, I had to prepare some of our
portlets to work on a Pocket PC browser (Internet Explorer).
Considering that our portlets depend on AJAX, I knew I was in for a treat.
I tried to use DWR but, it was throwing some object errors. Given I
was on a very, very tight schedule, I couldn't try and debug the
situation at that time. I reverted to rolling my own XHR solution which
turned out to be rather flexible.
I decided that I didn't want to deal with marshalling, passing, and
parsing XML, that is why I wanted to use DWR in the first place,
passing and parsing plain text would be just as bad. So what are my
on the back end, back to the client. The client simply passes the
that contains the needed data.
Velocity. This was great!
- Receive request
- Do some business logic
- Initialize Velocity and fill the context
- merge the template and pass it back in the response
Very clean and easy to do. I am going to look into replacing my XHR
js code and replace it with a dojo install that only has the IO
functionality in it. I have been playing with it and it rocks. I like
that you can choose to eval the return.
This can also be accomplished in other languages as well. I started doing the same thing with PHP, Dojo, and Smarty templates!