Question

Skip checking on required fields

Asked by: ChrisOz2008

Hi,

Using JSF 1.2 I have a page that has some required fields on it, there are also 2 buttons, Accept and Cancel. Accept is fine because I want the required fields so be checked for values, but when the user presses the Cancel button I don't want the required fields checked for values.  

Because this page is part of a page flow, I seem to have to make Cancel a button of type Submit, which causes the fields to be checked. I also tried setting it to a type Button, same issue.

Thanks

Chris

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Asked On
2009-08-19 at 16:16:49ID24666669
Tags

JSF

,

java

,

jsp

Topics

Java Server Faces (JSF)

,

Java Server Pages (JSP)

Participating Experts
3
Points
500
Comments
14

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Answers

 

by: karanwPosted on 2009-08-19 at 20:21:35ID: 25139169

you want to follow same flow even if you click cancel button.
There should be another servlet or another flow for cancel where checking of values does not come into picture.

 

by: a_bPosted on 2009-08-19 at 21:58:52ID: 25139457

The validations occur on a page submit. Are you submitting the page on the submit or are you just redirecting to another url?

Otherwise to skip certain fields for validation - http://myfaces.apache.org/sandbox/subForm.html ( I however donot recommend doing this)

 

by: ChrisOz2008Posted on 2009-08-19 at 23:21:25ID: 25139699

karanw:

When I say the flow gets followed when you press the cancel button, what I mean is that when the cancel button is pressed it calls an action that returns "cancel" which causes the page flow to navigate back to the previous page.

a_b:

How do I make a button just do a redirect without submitting?

 

by: a_bPosted on 2009-08-20 at 00:01:32ID: 25139850

 

by: ChrisOz2008Posted on 2009-08-20 at 00:30:32ID: 25139961

OK I've seen that doc before.

I already have redirect in the navigation rule but the field checking still occurs.

So basically the only way I can skip the validation is to have the cancel button be a link to the page I want to navigate to, rather then use the navigation rules?

 

by: a_bPosted on 2009-08-20 at 01:26:53ID: 25140245

Did you try setting immediate='true' in the cancel button?

 

by: a_bPosted on 2009-08-20 at 01:28:04ID: 25140253

Here is someone who is trying to do the same thing - http://forums.sun.com/thread.jspa?threadID=5348581

 

by: ChrisOz2008Posted on 2009-08-20 at 02:37:51ID: 25140573

Yes tried immediate = "true". To be honest I don't get what this does, it seems really seems to be erratic in the way that it works. The only time i find this useful is if I am using a modal window and I want the action to run before the onshow. Apart form that it's hit and miss.

I'm puzzled as to why what I am doing is so unusual, how do people normally do this?

God I miss Stuts!

 

by: a_bPosted on 2009-08-20 at 03:06:29ID: 25140702

But did the immediate='true' work for you?

 

by: ChrisOz2008Posted on 2009-08-20 at 03:11:26ID: 25140725

No still runs validation. The action that causes the page to flow to the configured page never gets run since it is blocked by the required field errors. Seems crazy I would have to write some custom validators to work around this

 

by: spprivatePosted on 2009-08-20 at 07:32:43ID: 25142987

Typically we control navigation through the navigation rule
So in the button click we call a bean in which say we have

nextPage = "thankyou"; and in the faces-config file
 <navigation-case>
            <from-outcome>thankyou</from-outcome>
            <to-view-id>/pages/thankyou.xhtml</to-view-id>
            <redirect/>
        </navigation-case>

Hope you are doing this

 

by: ChrisOz2008Posted on 2009-08-20 at 11:45:30ID: 25145798

Yes that is what I am doing.  The issue is that the page I am starting at has some required fields,  the cancel button calls an action that returns "cancel". The navigation rule says that in the case of cancel being returned then go to page A. The problem is that the action is never called because the cancel button is a submit button which causes the page to be validated. Since not all of the required fields have been completed by the user (since they hit cancel because they don't want to complete the fields) so the validation failure prevents the action from being called.   I would have thought that setting immediate="true" on the button would have fixed it, but this property in my experience is flaky at best.

 

by: ChrisOz2008Posted on 2009-08-21 at 02:44:14ID: 25150195

Ok I worked out the issue. I was using a4j commandButton but if I use standard command button then it works ok.  

 

by: ChrisOz2008Posted on 2009-08-21 at 02:49:51ID: 31617933

Ok I worked out the issue. I was using a4j commandButton but if I use standard command button then it works ok.

20120131-EE-VQP-002

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