I'm using the standard Wicket and custom components (from extensions and
written by me) and I've never run into a similar problem.
CompoundPropertyModels are a great concept and I see no 'danger' in them.
The problem with Button is its missing definition: does it use its Model for
the value attribute or does it not?
Sven
>imho, this is an inherent danger of using compound property models.this >can
>happen with more components then just the button. any >reusablecomponent that
>you put into the form might inherit a model >without yourealizing. imho you
>just have to watch out for stuff like >that.
>
>-Igor
>
>>On 3/12/06, Sven Meier <[EMAIL PROTECTED]> wrote:This week I ran into a
>>>>problem, where a button suddenly changed its
>>inscription which was supposed to be specified in the HTML template.
>>
>>Reason for this was that we added a new property to one of our model
>>objects. We're using CompoundPropertyModels (who doesn't?) and the value
>>of the property was rendered because as chance would have it the button
>>has an identical wicket:id :(.
>>I found the origin of this unexpected behavior in
>>Button#onComponentTag(ComponentTag) :
>>
>> try
>> {
>> String value = getModelObjectAsString();
>> if (value != null && !"".equals(value))
>> {
>> tag.put("value", value);
>> }
>> }
>> catch (Exception e)
>> {
>> // ignore.
>> }
>>
>>IMHO this code is problematic in either way:
>>- if the value attribute should stay untouched as specified in the HTML,
>>you carefully have to watch out for collision of property name and >>wicket:id
>>- if the value attribute should be generated, you won't get an error if
>>the property is misspelt.
>>
>>I propose to formalize the behaviour of Button with a new method, say:
>>
>> Button#setOutputMarkupValue(boolean)
>>
>>If you wonder, the name of this method was inspired by
>>Component#setOutputMarkupId().
>>
>>What do you think?
>>
>>Sven
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