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From Shyam A <struts_new...@yahoo.com>
Subject Re: newbie question - setting form parameter in Javascript
Date Sat, 12 Jul 2003 22:11:29 GMT
Mark,
 
Thanks a lot for your mails. I have used "action" as a form bean property and not as a parameter
in struts-config. Unfortunately, the Javascript function doesn't seem to work...it does not
set the value of the ActionForm property, "action". 
 When I tried to print out the value of the "action" property in my ActionClass,
I got a null value.
 
I tried the following code in my Action class and I got a null value.
String action = ((ActionForm) form).getAction();
 
Wonder if I have missed something.
 
Shyam

Mark Lowe <mark.lowe@talk21.com> wrote:
Its better that this is posted to the list as well, after all its a 
good question and hopefully an adequate answer.


function lookup(form) {
	form.elements['action'].value = "lookup";
	form.submit();
}
//-->






...



 [input] 





//struts config

name="myForm" redirect="false" parameter=""action" />


The only thing you'd have to watch would be if the client didn't 
support javascript then you'd lose lookup, this would make a case for 
having action as a form bean property and have some relevantly named 
form elements in noscript tags. If lookup isn't mission critical then i 
guess you could let this slide.



On Friday, July 11, 2003, at 08:44 PM, Shyam A wrote:

> Mark,
>  
> Thanks for your mail. I understand that DispatchAction class includes 
> multiple execute methods for different actions. However, I still have 
> some doubts.
>  
> You mentioned using tags in JSP:
>  
> 
>
> 
> Are these used instead of using "Submit" buttons ?
> i.e use and in conjunction instead 
> of  ?  Can 
> be used for a drop- down?
>  
> I guess my problem is still unresolved. As I mentioned in my earlier 
> mail, I have a drop-down associated with an ActionForm property "crn" 
> > .
> 
>        None      
>         
>       
> I would like to trigger an action called "Lookup" when the drop-down 
> is clicked .i.e, associate the clicking of the drop-down with the 
> "action" property of the ActionForm class. I don't know how to set the 
> "action" property of the ActionForm class  when the drop-down is 
> selected, based on which appropriate method of the DispatchAction 
> class would be executed.
>  
> Any help would be greatly appreciated.
>  
> Thanks,
> Shyam
>  
>  
>
>
> Mark Lowe wrote:
> check out dispatch actions..
>
> you can have multiple execute methods with dispatch action ...
>
> Your Action class extends DispatchAction instead of action (check the
> docs)
>
> public final ActionForward submit(
> ActionMapping mapping,
> ActionForm form,
> HttpServletRequest request,
> HttpServletResponse response)
>
> throws Exception {
> ...
> }
>
> public final ActionForward lookup(
> ActionMapping mapping,
> ActionForm form,
> HttpServletRequest request,
> HttpServletResponse response)
>
> throws Exception {
> ...
> }
>
> in struts config the parameter attibute need to know the name of the
> parameter your about to send, the value of which is your execute method
> name..
>
>
> scope="request" parameter="action">
> ...
>
> and then in jsp
>
>
>
>
>
>
> HTH Mark
>
>
> On Friday, July 11, 2003, at 08:00 PM, Shyam A wrote:
>
> > James,
> >
> > Thanks for your mail. I guess I need to elaborate a little bit. My
> > HTML form can be submitted in 2ways.
> > 1. Clicking the "Submit" button.
> > 2. Clicking the drop-down
> >
> > Clicking the drop-down triggers a different action than clicking the
> > "Submit" button.
> > Selecting a value in the drop-down would submit the form and populate
> > some of the other fields in the form. This is done before the 
> "Submit"
> > button is clicked. So, I need to distinguish the action of clicking
> > the drop-down from clicking the "Submit" button and I called it
> > "Lookup".
> >
> > Both actions would be identified with a single property in the
> > ActionForm class - action.
> >
> > eg:
> >
> >
> > I would like to set this "action" property value to "Lookup" on
> > clicking the drop-down using Javascript. I guess a hidden field would
> > not serve the purpose as I already have "action" property defined for
> > the Submit button.
> >
> > Look forward to your help/suggestions.
> >
> > Thanks,
> > Shyam
> >
> > James Mitchell wrote:
> >
> > You will need to create a hidden field named "action", with a value 
> of
> > "Lookup":
> >
> >
> >
> > My question to you is....why "Lookup"? What does that have to do with
> > your
> > form?
> >
> >
> > Here's a sample:
> >
> >
> > function submitForm(form) {
> > form.action.value="Lookup";
> > form.submit();
> > return true;
> > }
> >
> >
> >
> > [input]
> > Test Test2
> >
> >
> >
> > On Friday 11 July 2003 14:15, Shyam A wrote:
> >> Hi,
> >>
> >> I have an HTML form with Submit and Cancel buttons, and a drop down
> >> list,
> >> which when clicked submits the form. I use Javascript to submit the
> >> form
> >> when the dropdown list is clicked. I have a property called "action"
> >> defined in my ActionForm class that identifies the Submit and Cancel
> >> buttons in the HTML form. When the drop-down is clicked, I would 
> like
> >> to
> >> set the value of this "action" property to "Lookup".
> >>
> >> My Javascript function is given below:
> >>
> >> ################
> >>
> >>
> >> function submitForm(form)
> >> {
> >> form.action.value="Lookup";
> >> form.submit();
> >> return true;
> >> }
> >> #################
> >>
> >> and I invoke this function in my HTML form as shown below:
> >>
> >> #########################
> >>
> >> Test
> >>
> >> ###########################
> >>
> >> But, the value of the property "action" is not set to "Lookup".
> >>
> >> Any help would be greatly appreciated.
> >>
> >> Thanks,
> >> Shyam
> >>
> >>
> >> ---------------------------------
> >> Do you Yahoo!?
> >> SBC Yahoo! DSL - Now only $29.95 per month!
> >
> > --
> > James Mitchell
> > Software Developer/Struts Evangelist
> > http://www.struts-atlanta.org
> > 678-910-8017
> > AIM:jmitchtx
> >
> >
> >
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> >
> >
> >
> >
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>
>
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>
>

>
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