Well, if you use a wicket:id in the HTML, then you have to fill it - doing
nothing about it is invalid. So here you could either place an empty text
e.g:
if (product.getPhoto() != null) {
add(new Label("product-photo-date",
CommonUtil.getFormattedDate(product.getPhoto().getDateTime())));
add(new Label("product-photo-time",
CommonUtil.getFormattedTime(product.getPhoto().getDateTime())));
}
else
{
add(new Label("product-photo-date", ""));
add(new Label("product-photo-time", ""));
}
or you make it a subelement of a parent that could be disabled... similar to
the method noted here:
http://cwiki.apache.org/WICKET/forms-with-dynamic-elements.html and here:
http://cwiki.apache.org/WICKET/create-dynamic-markup-hierarchies-using-panel
s.html
best Regards
_____
Von: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] Im Auftrag von Francisco
Treacy
Gesendet: Freitag, 24. November 2006 15:30
An: wicket-user@lists.sourceforge.net
Betreff: [Wicket-user] question about showing components or not
Hi wicketers,
I would like to ask you what's the best way to perform the following:
Say I have Products. There are Products that have a Photo and there are
Products that don't.
// Set data to the page
add(new Label("product-description", product.getDescription()));
if (product.getPhoto() != null) {
add(new Label("product-photo-date",
CommonUtil.getFormattedDate(product.getPhoto().getDateTime())));
add(new Label("product-photo-time",
CommonUtil.getFormattedTime(product.getPhoto().getDateTime())));
}
In my html i have
<span wicket:id="product-description">[product-description]</span>
(eventually add something here)
<span wicket:id="product-photo-date">[product-photo-date]</span>
<span wicket:id="product-photo-time">[product-photo-time]</span>
(eventually add something here)
And Wicket will complain if product.getPhoto() is null, of course, cause
product-photo-date and product-photo-time were never added to the page
component.
I really don't see how to avoid this check, or how to solve this elegantly.
Perhaps missing something obvious, hope not :)
And afaik the useComponentUseCheck setting at application level checks the
other way round (if elements declared in java Page are marked-up in html
code). Anyway, I have it set to false.
Thanks in advance, and thanks as well for such a nice web framework,
Francisco
_____
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