RE: wrong behavior of checkboxes in forms?

[Brad Reneer]

I'm having the same problem.  Did you ever get this to work?

Thanks,
Bradley Reneer

-Original Message-
From: Hartmut Bernecker [mailto:[EMAIL PROTECTED]]
Sent: Mon, August 13, 2001 5:17 AM
To: [EMAIL PROTECTED]
Subject: Re: wrong behavior of checkboxes in forms?


Gregor Rayman schrieb:
 
 Hartmut Bernecker [EMAIL PROTECTED] wrote:
 
  Hello,
 
  I have a checkbox in a form. If I check it and then submit the form,
  then I receive the value true in the action when calling the method
  form.getMyCheckbox();
 
  But if I uncheck the checkbox and submit the form again, then I receive
  **again** the value true in the action when calling the method
  form.getMyCheckbox();
 
  Who can help???
 
  Hartmut
 
 Hi, there are two possible solutions:
 
 1) use request scope forms
 2) implement the reset() method. (Which you should do anyway always, when
 you use checkboxes)
 
 --
 gR


I had implemented the reset() method:

public void reset(ActionMapping mapping, ServletRequest request)
{
myCheckbox = false;
[...]
}

But anyway: the problem persists.

RE: wrong behavior of checkboxes in forms?

[Greg Lehane]

You should check the parameters in the HttpServletRequest object, from
what I gather, the request object is only populated with checkbox names
that are checked/true, when the form is submitted (not checkboxes that
are un-checked/false). Therefore you need to compare values of
checkboxes in your FormBean to ensure they're correct w.r.t. the values
in the request. So, you may have some checkboxes set to true in your
bean (from previous activity), that have been un-checked in the current
submission, you can tell if it has been un-checked by looking to see if
the checkbox name is NOT in the current request. The reset method is
called before the JSP loads (drags data from the FormBean), so you
should do something like this:

public void reset(ActionMapping mapping, HttpServletRequest request) {

  Enumeration params = request.getParameterNames();

  // look at vals in params  compare with checkbox vals in FormBean
  // i.e. set all checkbox names in request to true, and rest to false

}

Hope this helps

- Greg


-Original Message-
From: Brad Reneer [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, September 19, 2001 10:10 AM
To: [EMAIL PROTECTED]
Subject: RE: wrong behavior of checkboxes in forms?


I'm having the same problem.  Did you ever get this to work?

Thanks,
Bradley Reneer

-Original Message-
From: Hartmut Bernecker [mailto:[EMAIL PROTECTED]]
Sent: Mon, August 13, 2001 5:17 AM
To: [EMAIL PROTECTED]
Subject: Re: wrong behavior of checkboxes in forms?


Gregor Rayman schrieb:
 
 Hartmut Bernecker [EMAIL PROTECTED] wrote:
 
  Hello,
 
  I have a checkbox in a form. If I check it and then submit the form,
  then I receive the value true in the action when calling the
method
  form.getMyCheckbox();
 
  But if I uncheck the checkbox and submit the form again, then I
receive
  **again** the value true in the action when calling the method
  form.getMyCheckbox();
 
  Who can help???
 
  Hartmut
 
 Hi, there are two possible solutions:
 
 1) use request scope forms
 2) implement the reset() method. (Which you should do anyway always,
when
 you use checkboxes)
 
 --
 gR


I had implemented the reset() method:

public void reset(ActionMapping mapping, ServletRequest request)
{
myCheckbox = false;
[...]
}

But anyway: the problem persists.

Re: wrong behavior of checkboxes in forms?

[Gregor Rayman]

Hartmut Bernecker [EMAIL PROTECTED] wrote:


 Hello,
 
 I have a checkbox in a form. If I check it and then submit the form,
 then I receive the value true in the action when calling the method
 form.getMyCheckbox();
 
 But if I uncheck the checkbox and submit the form again, then I receive
 **again** the value true in the action when calling the method
 form.getMyCheckbox();
 
 Who can help???
 
 Hartmut

Hi, there are two possible solutions:

1) use request scope forms
2) implement the reset() method. (Which you should do anyway always, when 
you use checkboxes)

--
gR

wrong behavior of checkboxes in forms?

[Hartmut Bernecker]

Hello,

I have a checkbox in a form. If I check it and then submit the form,
then I receive the value true in the action when calling the method
form.getMyCheckbox();

But if I uncheck the checkbox and submit the form again, then I receive
**again** the value true in the action when calling the method
form.getMyCheckbox();

Who can help???

Hartmut

Re: wrong behavior of checkboxes in forms?

[Hartmut Bernecker]

Gregor Rayman schrieb:
 
 Hartmut Bernecker [EMAIL PROTECTED] wrote:
 
  Hello,
 
  I have a checkbox in a form. If I check it and then submit the form,
  then I receive the value true in the action when calling the method
  form.getMyCheckbox();
 
  But if I uncheck the checkbox and submit the form again, then I receive
  **again** the value true in the action when calling the method
  form.getMyCheckbox();
 
  Who can help???
 
  Hartmut
 
 Hi, there are two possible solutions:
 
 1) use request scope forms
 2) implement the reset() method. (Which you should do anyway always, when
 you use checkboxes)
 
 --
 gR


I had implemented the reset() method:

public void reset(ActionMapping mapping, ServletRequest request)
{
myCheckbox = false;
[...]
}

But anyway: the problem persists.

Re: wrong behavior of checkboxes in forms?

[Ted Husted]

Setting the checkbox to false should solve the problem. Double-check
your code.

Hartmut Bernecker wrote:
 I had implemented the reset() method:
 
 public void reset(ActionMapping mapping, ServletRequest request)
 {
 myCheckbox = false;
 [...]
 }
 
 But anyway: the problem persists.