Well this is of course a simple example.
In my case I have an administration page with a list of domain
objects, lets say cheeses (how did I come up with that idea?).
On the same page I have a form with all fields of the cheese object
(name and kiloPrice for example). Behind each cheese in the list there
is an 'edit' button which will set that specific cheese object as a
the current model object in the form, which results in the name and
kiloPrice field in the form being filled with the values of the
cheese.
If then, for some reason the validation of a form post fails (the
price is too high for this Gouda), and I (as an end user) decide to
skip editing this Gouda cheese and press the edit button of the
Cheddar cheese, the form will not be updated with the name and price
of the Cheddar. The values of the Gouda remain. Even though the
current object in the model was updated to Cheddar.
When I now press the submit button again (after putting a correct
price in the field), the Cheddar object is updated with the values of
the Gouda (which were still in the formfields).
I can make a bigger example like this if needed.
On 12/10/08, Martijn Dashorst <[EMAIL PROTECTED]> wrote:
> Why on earth would you want to update a model value when there's a
> validation error in the input? That is the whole point of validation!
>
> Martijn
>
> On Wed, Dec 10, 2008 at 10:44 AM, Rutger Jansen <[EMAIL PROTECTED]> wrote:
>> Hi,
>>
>> I have a strange situation in the admin part of my application which I
>> have reproduced in this tiny code example.
>>
>> In this example I can load a value in the textfield by clicking the
>> link (which also increases the number to show that the link works ok).
>> I can post the form without problems and load the value again.
>> But when a validation error occurs (in this case when the posted value
>> is too long), the field will not be updated after pressing the link
>> (even though the log shows that the link is clicked), unless I post
>> the form again without validation errors.
>>
>> Am I forgetting something here?
>>
>>
>> Rutger
>>
>>
>> --- Example page class---
>> public class Example extends WebPage {
>>
>> private String value;
>> private int valueVersion = 1;
>>
>> public Example() {
>> Form form = new Form("form");
>>
>> TextField textfield = new TextField("textfield", new
>> PropertyModel(Example.this, "value"));
>> textfield.add(StringValidator.maximumLength(15));
>> form.add(textfield);
>>
>> add(form);
>> add(new FeedbackPanel("feedback"));
>>
>> add(new Link("link"){
>> @Override
>> public void onClick() {
>> value = "This is a test" + valueVersion++;
>> }
>> });
>> }
>> }
>>
>> --- Example html ---
>> <html xmlns="http://www.w3.org/1999/xhtml";
>> xmlns:wicket="http://wicket.sourceforge.net/";>
>> <head></head>
>> <body>
>> <div wicket:id="feedback" />
>>
>> <form wicket:id="form">
>> <input type="text" wicket:id="textfield"/>
>> <input type="submit" />
>> </form>
>>
>> <p><a href="#" wicket:id="link">Load form value</a></p>
>> </body>
>> </html>
>>
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>>
>
>
>
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