Simple question on page update stuff

[parki]

Hello - hoping someone can help out a newbie:

I have a bean with a couple accessor methods - I'd like to display the values and allow then to be edited, and then when a button is pressed, to update the database, without re-rendering the page. I'm unsure what the best practice is here.

<h:inputText id="first" value="#{bean.first}" />
<h:inputText id="last" value="#{bean.last}" />
<a4j:commandButton value="Update" />

I read some of the docs, which imply that the command button will re-render the page (not what I want - I just want to submit the values so I can update te database.

Any help/pointers appreciated.

parki...

[ilya_shaikovsky]

without specifying reRender - this button will works right as you need. No updates will be performed except you have outputPanel marked with ajaxRendered.

[parki]

Hi Ilya - thanks for the reply.

So, if I understand everything correctly, I simply need to wire the action of the command button to a backing bean which will send my data bean (with 'first' and 'last') to the database to be updated - is this the general way of doing things?

Your help is really appreciated.

parki...

[ilya_shaikovsky]

yes and your method should return null.

[parki]

Hi Ilya -

Do I use an 'action' event and return null from the method, or do I use an 'actionListener'? Is there a fundamental difference?

It's starting to make sense (and it's extremely impressive) but I'm lacking in good (ie. simple :) examples.

Thanks Ilya.

parki...

[parki]

Aha!

I used a <h:commandButton> and it does a refresh. Changed this to an <a4j:commandButton> and is does *exactly* what I needed - the 'action' method implementation returns null, and this is working well.

Question still remains in my mind - what would be the difference between an action method and an actionListener.

Many thanks Ilya - another hurdle overcome.

parki...

[sergeysmirnov]

"parki" wrote:
Question still remains in my mind - what would be the difference between an action method and an actionListener.

http://www.google.com/search?q=difference+action+method++actionListener

[parki]

Thanks Sergey -

Help is appreciated.

Cheers,

parki...