it is because of the way tapestry handles component requests!
if a component fires an action (from a submit or link or...) tapestry
will first resolve the action methods and invoke them. after the action
methods have been invoked tapestry determines the page the
component is located in and generates a redirect to this page.
So a HTTPResonse goes back to the client and tells it to issue
a new request to the determined page and tapestry returns the
rendered page with the response.
because 2 requests are issued and field data is not persisted between
requests (they are discarded) your field will be blank. therefore you need
the persist annotation. if you use "session" your data will be stored in
the
session and stay there for subsequent requests. if you use "flash" your
data
will be stored ONLY for the period of the 2 request so tapestry can
render this
data.
please re-read the documentation (or watch one of the screencasts...
its explained and shown in the first i think) and search the mailinglist
for further details
g,
kris
Angelo Chen <[EMAIL PROTECTED]>
25.10.2007 12:25
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"Tapestry users" <users@tapestry.apache.org>
An
users@tapestry.apache.org
Kopie
Thema
T5: Select won't retain value when it rejects by the server
Hi,
I have a simple form as follows, if it can not pass onValidate, errors
were
shown, and the value in the 'Name' field was retained, but the 'Gender'
will
not retain the selected value, always goes back to blank unless I declare
gender field @Persist, why? Thanks.
<t:form t:id="regForm">
<input t:type="textfield" t:id="name" size="40"
t:validate="required,minlength=8" /><br />
<input t:type="select" name="gender" t:id="gender"
model="genderModel" t:validate="required" t:label="gender"
t:value="gender"
/><br />
<input type="submit" name="Submit" id="Submit"
value="Submit" /><br />
<t:errors />
</t:form>
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