BTW We currently use version 4.0.2. and run it on tomcat. I would also
appreciate if somebody can point me to the "rewind" document if any. I have
heard so many stories about common newbie rewind mistakes but couldnt find
what they really are.
Thanks again.
Srini.
On 11/10/06, Srinivas Yermal <[EMAIL PROTECTED]> wrote:
Hi,
I am a newbie trying to learn Tapestry. I did try to search through the
archives for a solution, but couldnt find anything relavant. It would be
great if someone could point me in the right direction.
I have a page with a listing of a collection. I am using "For" component
(ForBean) in the form. There are text fields against each item which has a
value from the items in the collection. Now one can change the text value
and hit the save button at the end of the form. The listener that is
associated with the form gets called but I dont have a clue as to how I can
obtain the changed values from the collection. I tried with both form
listener and submit action listener. I always end up with a null or empty
item collection.
Some code snippet below -
public abstract Collection getItems();
public abstract void setItems(Collection items);
ActionListener Method 1:
public void saveHistory(IRequestCycle cycle, Object[] list) {
LOG.debug("saveHistory(cycle, array) invoked");
if (null == list) return;
for (Object o : list) {
Question mh = (Question)o;
LOG.debug(mh.getQuestionText() + " " + mh.getAnswerText());
}
}
ActionListener Method 2:
public void saveHistory(IRequestCycle cycle) {
LOG.debug("saveHistory(cycle, array) invoked");
List list = cycle.getListenerParameters();
if (null == list) return;
for (Object o : list) {
Question mh = (Question)o;
LOG.debug(mh.getQuestionText() + " " + mh.getAnswerText());
}
}
FormListner Method:
public void saveFormHistory(IRequestCycle cycle) {
LOG.debug("saveFormHistory(cyle) invoked");
Collection<Question> list = getItems();
if (null == list) return;
for (Question mh: list) {
LOG.debug(mh.getQuestionText () + " " + mh.getAnswerText());
}
}
The HTML file -
<form jwcid="[EMAIL PROTECTED]" listener="listener:saveFormHistory">
...
<tr jwcid="@For" source="ognl:items" value="ognl:item" element="tr">
<td><span jwcid="@Insert" value="ognl:item.question.text">Question
Text</span></td>
<td><input jwcid="@TextField" value="ognl:item.answerText"/></td>
</tr>
...
<input class="button" type="submit" value="Save" name="save" jwcid="@Submit"
action="listener:saveHistory"
parameters="ognl:items"/>
Please do let me know if something here is not right or if you have any
further questions. Looking forward for some advice.
Thanks in advance.
Regards,
Srini.
