onRender vs. Constructor

[bigmountainben]

Hi everyone,

For say, a LayoutContainer subclass, what are the guidelines with respect to overriding onRender vs. doing most of the work in the constructor and letting the super class onRender do the work?

Thanks!
Ben

[dardison]

I think the best reason for override onRender is lazy loading. I mean, you will build widgets a second before you need it, if you did in constructor you will have the objects earlier than it was expected.

[bigmountainben]

Hey, thanks for the reply.

How often is onRender called? Is everytime the page is loaded? or more often?

It seems like a good model is to do data retrieval in the constructor, and widget creation in onRender. Any thoughts on that?

Thanks,
Ben

[sven]

onRender is called once.