Re: Refreshing complete page from a header component
Re: Refreshing complete page from a header component
- Subject: Re: Refreshing complete page from a header component
- From: Paul Lynch <email@hidden>
- Date: Fri, 29 Jun 2007 14:50:26 +0100
Returning null is quite interesting, as it seems to return (so I was
once told) the last component used to generate a page - like possibly
an email page component. I haven't bothered to personally verify
this, but plenty of people have reported similar situations.
I take the approach of least code - for a simple app, I return null,
but if the situation warrants it, I might regenerate a new page with
pageWithName(), or return context().page(); whichever results in what
I think is the clearest code.
context().page() returns a specific component, just like pageWithName
() does, but without the overhead of creating and initialising it;
when you return null, WO has to work out which page you might have
meant. The performance difference doesn't have to be large, although
I have been told the same as you.
Paul
On 29 Jun 2007, at 14:39, Steven Mark McCraw wrote:
Can anyone comment on the benefits of returning context().page()
vs. returning null for an action method? Returning context().page
() seems to not work when using Wonder Ajax components, so I always
return null there. Someone who worked at Apple once told me that
returning context().page() was WAY more efficient. I took them at
their word and started using it everywhere, but it's come to be one
of those things that I kind of doubt makes that big of a
difference. Does anyone know what the difference actually is, and
why one might be better than the other?
Mark
On Jun 29, 2007, at 9:17 AM, Paul Lynch wrote:
On 29 Jun 2007, at 12:31, Johan Henselmans wrote:
I must be missing something: I have a header component, which
contains the menubar, and sets the default language, by calling
session.setlanguages() via a WOHyperlink. After that I want to
return the current page. But a "return this" from within the
Header WOComponent will only return the header. Any idea how to
get the current page returned from within the header component?
This is the structure:
WOComponent->Page
WOComponent->Header
rest....
WOComponent->Footer
Try:
return context().page();
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