On Jun 29, 2007, at 6:39 AM, Steven Mark McCraw wrote:
Can anyone comment on the benefits of returning context().page()
vs. returning null for an action method?
They both have the same effect (unless you are dong something funky /
bad in your code but I will ignore that remote possibility).
Returning context().page() seems to not work when using Wonder Ajax
components, so I always return null there.
That framework changes the RR loop so that it is a special case.
Null is what to return there.
Someone who worked at Apple once told me that returning context
().page() was WAY more efficient.
Mike and I looked at this a while back. Returning context().page()
is _slightly_ more efficient. Returning null is not ever going to be
a performance bottleneck in your app. My personal preference is to
return context().page() as it is very clear in what it is doing. The
slight increase in efficiency is just a bonus.
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?
The difference is that returning context().page() stops the
invokeAction processing immediately. Returning null results in the
framework continuing to evaluate invokeAction looking for a non-null
response. If nothing returns a non-null response, it returns context
().page() as the default action.
Chuck
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();
Paul
_______________________________________________
Do not post admin requests to the list. They will be ignored.
Webobjects-dev mailing list ([email protected])
Help/Unsubscribe/Update your Subscription:
http://lists.apple.com/mailman/options/webobjects-dev/mark%
40bluecollarsoftware.com
This email sent to [EMAIL PROTECTED]
_______________________________________________
Do not post admin requests to the list. They will be ignored.
Webobjects-dev mailing list ([email protected])
Help/Unsubscribe/Update your Subscription:
http://lists.apple.com/mailman/options/webobjects-dev/chill%
40global-village.net
This email sent to [EMAIL PROTECTED]
--
Practical WebObjects - for developers who want to increase their
overall knowledge of WebObjects or who are trying to solve specific
problems.
http://www.global-village.net/products/practical_webobjects
_______________________________________________
Do not post admin requests to the list. They will be ignored.
Webobjects-dev mailing list ([email protected])
Help/Unsubscribe/Update your Subscription:
http://lists.apple.com/mailman/options/webobjects-dev/archive%40mail-archive.com
This email sent to [EMAIL PROTECTED]
