Hi Joel.
What you put in that onValidateForm is going to be important. :)
@Persist("flash") persists a value in the session until (and only
until) it has been re-accessed (once).
At that point, it is yanked from the session. So if you're reading
your List<String> values in the onValidateForm, you're going to wind
up with issues.
It turns out that you can work around this by simply doing:
values=values;
Your IDE will probably complain about this being a noop... but it
isn't, since this code will be instrumented at runtime.
Cheers,
Robert
On Apr 3, 2008, at 4/36:34 AM , Joel Wiegman wrote:
Sure... An example is below. The "values" field disappears from the
screen if validation fails.
//JAVA
public class MyClass {
//(assume getters and setters exist)
@Persist("flash")
List<String> values;
public void onPrepare() {
//populate values with stuff
}
public void onValidateForm() {
//possibly some form validation here
}
}
//TML
<t:form>
//other fields with validation rules would be here
<div t:type="loop" source="values" value="selectedValue">
${selectedValue}
</div>
<t:form>
-----Original Message-----
From: Ted Steen [mailto:[EMAIL PROTECTED]
Sent: Wednesday, April 02, 2008 6:10 PM
To: Tapestry users
Subject: Re: T5.0.11: @Persist("flash") values are not retained if
validation fails
Could you give a simple example of the problem?
2008/4/2, Joel Wiegman <[EMAIL PROTECTED]>:
As an addendum, I shouldn't say "any field". The culprit is a List
that gets iterated over in the TML.
-----Original Message-----
From: Joel Wiegman [mailto:[EMAIL PROTECTED]
Sent: Wednesday, April 02, 2008 2:20 PM
To: Tapestry users
Subject: T5.0.11: @Persist("flash") values are not retained if
validation fails
All,
I've noticed that if validation fails on my page, any field annotated
with @Persist("flash") is not retained when the response is rendered.
Per the documentation for @Persist("flash"), this doesn't appear to
be expected behavior.
Should I put this in JIRA?
Joel
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/ted
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