Thanks for this great explanations
I already solved this problem
and now 'm quite close to understand it!
It would be great to have a sequence diagramm
to see this flow
submit-reset-populate-validate....
because knowing this flow isn't quite clear
to a normal struts-user.
THANKS A LOT
> starki78 wrote:
> > Hi!
> >
> > I've a large problem with html:multibox.
> > I've tree checkboxes. When I choose
> > one or two or three it arrives correct
> > at the next action!
> > Only then all checkboxes are deselected
> > it remembers the state of the checkboxes that was
> > selected before! The state of the form is session in struts-config.
> > Can you help me with this problem??
> > I really don't have an idea how to solve it!
> >
> As Adam J. mentioned, it sounds like you're using a session-scoped
> bean. Try overriding (if you haven't already) the reset() method of
> your form bean and resetting the property:
>
> public void reset( ActionMapping mapping, HttpServletRequest request )
> {
> this.values = new String[0];
> }
>
> If you're _not_ using a session bean (and are using a request-scoped one
> instead), you'll _still_ want to do the above. Using this way in both
> cases, values from the previous request are discarded. If the web
> browser doesn't send any checkbox values over (because none are
> checked), then this.values will be an empty array, which corresponds to
> the very state of the submitted form's checkboxes (ie: none are checked).
>
> The array of values in your formbean for an html:multibox are a list of
> values of checked checkboxes. So...
>
> 1. Form bean looks like this:
> this.values = { "value1", "value3", "value5" };
>
> 2. Displayed form looks like this:
> <html:multibox property="values">value1</html:multibox> 1
> <html:multibox property="values">value2</html:multibox> 2
> <html:multibox property="values">value3</html:multibox> 3
> <html:multibox property="values">value4</html:multibox> 4
> <html:multibox property="values">value5</html:multibox> 5
>
> 3. HTML sent to browser looks like this:
> <input type="checkbox" name="values" value="value1" checked> 1
> <input type="checkbox" name="values" value="value1"> 2
> <input type="checkbox" name="values" value="value1" checked> 3
> <input type="checkbox" name="values" value="value1"> 4
> <input type="checkbox" name="values" value="value1" checked> 5
>
> 4. User unchecks ALL checkboxes, and submits the form.
>
> 5. Struts calls reset() on your form
> - Your reset() method sets this.values = new String[0]
>
> 6. Struts populates your form, and _doesn't touch "values"_, because
> nothing is checked, so values remains an empty array.
>
> Sound good?
>
> - Scott
>
>
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