Most things in T5 are delightfully simple, but I find this surprisingly difficult: how to best initialize a page to default context (and redirect to it). Imagine you have a search & result page. If I access the page without any context I want all records to be displayed. In onActivate() without parameters I set the context to *all* and return this to redirect, then I query the database in setupRender() to initialize the data for the grid. However, sorting the grid will also cause a call to onActivate() without parameters, resetting my data to the default context. The parameter-less call to onActivate() would be harmless if I didn't do a redirect from onActivate() but then I cannot set the default context and redirect. In setupRender() I could decide whether redirect is needed or not but at that time, I'm already committed to rendering the request.
Because events cause a parameterless onActivate() call, I tend to reserve onActivate() for possible component/event initialization needs only and always link to pages with initial context already set. I also find it roughly impossible to use overloaded versions of onActivate() and subsequently, if my page has multiple entry points, I typically resort to implementing it in a single onActivate(EventContext eventContext) operation containing a big if-else clause. Since the activation context is anyway sent with an event request (as in ?t:ac=mycontext), rather than using the encoded context for rendering, wouldn't it be just simpler if that context was used for activating the page for the event request and the following redirect for rendering would just use whatever context onPassivate() returns? What do others think, how do you handle this? Kalle --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tapestry.apache.org For additional commands, e-mail: users-h...@tapestry.apache.org
