I wanted to mention that the Validator validation
framework has some basic validations that tie
Javascript to the server side validations together.
So you don't have to worry about the Javascript being
run because the server side validation will always
happen. The validation framework is in the
contrib/validator directory of the nightly source and
it is also posted here:
http://home.earthlink.net/~dwinterfeldt
David
--- Francisco Hernandez <[EMAIL PROTECTED]> wrote:
> ActionErrors validate(ActionForm
> form,HttpServletRequest request)
>
> in perform():
> ActionErrors errors =
> validate(addressForm,request);
> if(!errors.empty()) {
> saveErrors(request, errors);
> forward = "editAddress";
> } else {
> // continue action..
> }
>
> following your method ive done something like the
> following..
> I was thinking about the validation using Javascript
> but ive decided against
> it, since one can turn off javascript on the
> browser..
> ----- Original Message -----
> From: "Robert Parker" <[EMAIL PROTECTED]>
> To: <[EMAIL PROTECTED]>
> Sent: Thursday, October 18, 2001 4:07 PM
> Subject: Re: where should validation happen?
>
>
> > Essentially correct. Thus javascript on the
> browser ensures that a date is
> a
> > date, a number a number etc. I like this approach
> as I can hook the
> > validation code into the onchange event of the
> form fields and hence the
> > user gets immediate error feedback.
> >
> > In my action classes, they assemble the request
> data back into generic
> > non-web specific beans. These beans then get
> passed to methods of the
> > business logic classes. Now my action classes are
> coded to trap two types
> of
> > errors - application errors and system errors. A
> system error would be
> > things like the database going down. An
> application error would be
> something
> > like a dealer going over his dealing limit etc.
> These errors get added to
> > the response with the saveerrors() method call...
> >
> > regards
> >
> > Rob
> > ----- Original Message -----
> > From: "Francisco Hernandez" <[EMAIL PROTECTED]>
> > To: <[EMAIL PROTECTED]>
> > Sent: Friday, October 19, 2001 7:55 AM
> > Subject: Re: where should validation happen?
> >
> >
> > > so basically i take it as if you dont do
> anything in your form beans
> > > validate method?
> > >
> > > and you handle all errors in your actions
> perform method and
> saveErrors()
> > > and forward back to the input screen?
> > >
> > >
> > >
> > > ----- Original Message -----
> > > From: "Robert Parker"
> <[EMAIL PROTECTED]>
> > > To: <[EMAIL PROTECTED]>
> > > Sent: Wednesday, October 17, 2001 9:35 PM
> > > Subject: Re: where should validation happen?
> > >
> > >
> > > > From my experience there are some subtle
> details when using the
> > validate()
> > > > method of the form bean...
> > > >
> > > > The validate method is called unless you set
> the validate attribute in
> > the
> > > > struts config to false.
> > > >
> > > > If an error is found by your validate method,
> struts seems to delegate
> > > back
> > > > to the input (jsp) as specified in the config,
> hence your action
> > handlers
> > > > perform method is not called.
> > > >
> > > > My preference is to perform basic field/type
> validation in the browser
> > > using
> > > > javascript, and business type validation I
> handle via beans called
> from
> > my
> > > > action handler class.
> > > >
> > > > Letting struts call the validate() method for
> me has given me
> problems -
> > > as
> > > > I often have my action handlers populate say
> collections of lookup
> > values
> > > > for selection lists etc. Hence if struts does
> not call my perform
> > method,
> > > my
> > > > selection lists will be empty. Note I
> discovered this after I had
> > designed
> > > > my action handlers this way...
> > > >
> > > > regards
> > > >
> > > > Rob
> > > > ----- Original Message -----
> > > > From: "Francisco Hernandez"
> <[EMAIL PROTECTED]>
> > > > To: <[EMAIL PROTECTED]>
> > > > Sent: Thursday, October 18, 2001 10:06 AM
> > > > Subject: Re: where should validation happen?
> > > >
> > > >
> > > > > im sorry thats the SaveRegistrationAction
> not SaveSubscriptionAction
> > > > > ----- Original Message -----
> > > > > From: "Francisco Hernandez"
> <[EMAIL PROTECTED]>
> > > > > To: <[EMAIL PROTECTED]>
> > > > > Sent: Wednesday, October 17, 2001 5:01 PM
> > > > > Subject: where should validation happen?
> > > > >
> > > > >
> > > > > > in the struts example that comes with the
> stable release of struts
> > 1.0
> > > > > there
> > > > > > is a SaveSubscribtionAction and it does
> some validation of the
> > > > > > SubscribtionForm but theres also
> validation in the validate()
> method
> > > of
> > > > > the
> > > > > > SubscribtionForm, so my question is, whats
> the difference between
> > > using
> > > > > the
> > > > > > forms validation() method and validating
> data in the Action?
> > > > > >
> > > > > >
> > > > >
> > > > >
> > > >
> > >
> > >
> >
>
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