Re: Displaying a single error message for multiple properties

[Kwok Peng Tuck]

You seem to have missed the point about my response.

In this section :

if(!password.equals(username))  {
   //Add whatever action error here,
   //and it will be returned to the input page.
}

The action error that you create will contain the message you want. Just 
select or create the message
that you need.  It will be returned to the page. You of course need to 
define the text in the message resource properties first.
I understand that this is only a code snippet and may only serve to 
confuse you, if this is the case have a look at some of the 
samples(source, specifically
classes which extend ActionForm) that come with of Struts.



James JKE95 Kerridge wrote:

Kwok,

thanks for the reply.

My problem is not as simple as that.

What I want to do is display a single error which relates to 2 different 
fields.

In the view I wish to highlight both of the fields that are in error and 
display only 1 error message that relates to both. Not just 1.

As this must be a standard requirement I was wondering how others have 
implemented this and whether there is a 'standard' approach that might be 
followed/copied.

Cheers

James



From:   Kwok Peng Tuck <[EMAIL PROTECTED]> on 18/08/2003 10:06 ZE8
Please respond to "Struts Users Mailing List" 
<[EMAIL PROTECTED]>
To:     Struts Users Mailing List <[EMAIL PROTECTED]>
cc: 
Subject:        Re: Displaying a single error message for multiple properties

What you want to acheive is not impossible. 

In your action form you just need to handle this in your validate method.
It's pretty simple :
if(!password.equals(username))  {
   //Add whatever action error here,
   //and it will be returned to the input page.
}


There's no need for you to write special taglibs to do this, as there is 
already a <html:error> tag that does this.



James JKE95 Kerridge wrote:

 

Basically I want to be able to raise a single ActionError for 2 
properties.

e.g.

a password field and a confirm password field exist

if they don't match then I want to display one message saying "Password 
and confirmation password don't match"

I also want to highlight both fields.

To highlight both fields I would ideally raise a single error for each 
property.

Sadly the model doesn't seem to support multiple properties for a single 
error.

It seems that my choices will be to create a dodgy convention when 
   

raising 
 

messages and have a special tag lib for displaying them.

Has anyone found a nice way of doing this. It must a problem everyone has 
   

 

faced because surely most web apps have cross field validation and want 
   

to 
 

have a single error message that relates to the fields involved in the 
cross validation. e.g. field B cannot be foo when field A is bar.

Cheers

James

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