Thank you very much, that was exactly what I was looking for. I am new
to tapestry and it was not clear for me how loops are working, but now I
understand it. :-)
Also many thanks to the other guys that replied.
@Marcus: Grid didn’t work for me, because I didn't have any Bean that I
could pass.
@Francois: Looks like a nice component and a generic solution for that
kind of problem. But I think it was bit overkill for me.
@Igor: FormInjector may work, if I always start with one input field.
But I also have to provide an edit form where already can be a set of
values. I am not sure how I could implement this using the FormInjector.
Regards,
Michael
Josh Canfield schrieb:
> Hey Michael,
>
> I know a couple of guys have replied, but I think there is a much
> simpler answer to your problem.
>
> drop the item property from your page and add getter/setters that
> update the your items list based on the index in the loop:
>
> @Property
> private int _index;
>
> public String getItem() {
> if ( items.size() <= _index ) {
> // what to do when the index is out of bounds?
> }
> return items.get(_index);
> }
>
> public void setItem(String s) {
> if ( items.size() <= _index ) {
> // what to do when the index is out of bounds?
> }
> items.set(_index, s);
> }
>
>
> and update the loop div in your template to bind the index property:
> <div t:type="loop" t:source="items" t:value="item" t:index="index">
>
> The way your page was written you were telling tapestry to update the
> item property for each value in the list, which it dutifully did. But,
> what you really wanted was it to put the items into your list.
>
> Hope that helps,
> Josh
>
> On Tue, Apr 15, 2008 at 6:51 AM, Michael Dukaczewski
> <[EMAIL PROTECTED]> wrote:
>> I am using Tapestry 5.0.11 and have a problem with a dynamic list of strings
>> in a form. What I am trying, is the following:
>>
>> In the Page.java:
>>
>> @Persist
>> private List<String> items;
>>
>> @Property
>> private String item;
>>
>> public List<String> getItems() {
>> if (items == null) {
>> items = new LinkedList<String>();
>> }
>> return items;
>> }
>>
>> public void onSelectedFromAdd() {
>> getItems().add("");
>> }
>>
>> And in the Page.tml:
>>
>> <t:form>
>> <div t:type="loop" t:source="items" t:value="item">
>> <t:textfield value="item" />
>> </div>
>> <div><t:submit t:id="add" value="more"/></div>
>> <div><t:submit t:id="save" value="save"/></div>
>> </t:form>
>>
>>
>> I have a list of values, the user has to enter. The number of values, that
>> have to be typed in, is dynamic, so the user has to extend the form.
>> The add button works, but the values are not saved. Can someone tell me,
>> that I am doing wrong?
>>
>>
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>
>
>
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