Scot Mcphee schrieb:
Hello
Does any one have a short recipe how to use a checkbox in a grid component?
What I need to do is fairly simple - let the use select (for example)
three of five available options presented in a grid component, and
submit their selections, which are then processed. A good example would
be a "remove" checkbox on a list of items in a shopping cart, where the
items are are only in the user's session so database IDs won't do.
I've tried looking through the wiki, searching google, searching the
mailing list with google, and looking through the 'Tapestry 5 Building
Web Applications' book which I bought as a PDF, but alas, I can't find
find a simple recipe for doing this.
I'd like to use the Grid because the data will be fairly complex (it
isn't for the time being, once I get this technique functional it will
be). I'd like the selection to change a value in the underlying POJO
(e.g. Pojo.selected) that's backing the Grid. I have been unable to get
this anywhere near any semblance of "working". Therefore currently any
sort of technique that could possibly work would be appreciated, for
example to have an List<Pojo> originalList and List<Pojo> selectedList -
I've tried to see what convention might give me that behaviour but so
far, been unable to uncover it.
scot
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Here is an example with the chenille components
http://www.chenillekit.org/chenillekit-tapestry/ref/org/chenillekit/tapestry/core/components/InPlaceEditor.html
Here is a snippet from my evaluation article, which I will publish this
week.
extract of the template
<form t:type="form" t:id="addressForm">
<t:errors/>
<t:grid source="addresses" row="address">
<p:nameCell>
<t:hidden value="address.id"/>
<input t:type="TextField" t:id="name" t:value="address.name"
t:validate="required, maxlength=10" size="10"/>
</p:nameCell>
<p:cityCell>
<input t:type="TextField" t:id="city" t:value="address.city"
t:validate="required, maxlength=10" size="10"/>
</p:cityCell>
</t:grid>
<input type="submit" value="Save"/>
</form>
The page class
public class VariousComponents {
private List<Address> addresses = new ArrayList<Address>();
@Property
private Address address;
public VariousComponents() {
addresses.add(new Address("foo", "Bad Vilbel", "Germamy", "Bubenweg
1", Salutation.MR));
addresses.add(new Address("bar", "Aachen", "Germamy", "Neuer Weg 1",
Salutation.MR));
addresses.add(new Address("bazz", "Frankfurt", "Germamy", "Neuer Weg
2", Salutation.MR));
addresses.add(new Address("bozz", "Chemnitz", "Germamy", "Hase 1",
Salutation.MR));
// just set an id value
for(int i = 0; i< addresses.size();i++)
addresses.get(i).setId(i+1);
}
public List<Address> getAddresses() {
return addresses;
}
}
--
Best Regards / Viele Grüße
Sebastian Hennebrueder
-----
Software Developer and Trainer for Hibernate / Java Persistence
http://www.laliluna.de
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