As far as I know, the only Tapestry-approved way of doing this is to do a round-trip to the server - either to re-render the entire page, or to re-render a section of the page via Tacos' ajax mechanism. That keeps the state of the page on the server and the html in sync so you don't get the stale page error. To my mind, this is Tap's single greatest flaw, especially considering the general move to much more dynamic content on the client. It makes a lot of things that could be done purely on the client prohibitively difficult. Another option would be to make the form post to an ExternalService and then manually process the form parameters instead of letting Tapestry do it for you. But if you do that, you might as well just be working in a plain old servlet.
--sam On 5/20/06, Cliff Zhao <[EMAIL PROTECTED]> wrote:
Let Tapestry renders all the components. You only use Javascript to make them visible or invisible. I think that this is the most straight forward way, otherwise you have to manipulate the rewind cycle, which is error-prone. On 5/20/06, Paul Cantrell <[EMAIL PROTECTED]> wrote: > > Sorry to interject an actual Tapestry question into all the exciting > talk about logos and GWT! > > I have a form with a bunch of text fields inside a @For. I want my > page to have a "new item" link that uses Javascript to add a new > element to the form. > > My Javascript works great on the client -- new TextFields appear just > fine. But this adds unexpected components to my form, and of couse I > get a stale link error. > > How do I prevent the stale link? Do I use Javascript to manually > modify the hidden field that lists the components in the form? i.e. > use Javascript to turn this: > > <input type="hidden" name="formids" > value="items,Hidden,TextField,Submit"/> > > ...into this: > > <input type="hidden" name="formids" > > value="items,Hidden,TextField,Hidden,TextField,Hidden,TextField,Submit"/ > > > > ...? Yuck! > > Is there a better way? > > I'm sure this must have been covered on the list or in the docs, but > I searched and couldn't find it. Any pointers in the right direct > would be welcome. > > Cheers, > > Paul > > _________________________________________________________________ > Piano music podcast: http://inthehands.com > Other interesting stuff: http://innig.net > > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > >
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