Handling international number and date formats in html:text fields

[Adam Lipscombe <ad...@expensys.com>]

Folks,


We have an internationalised site using struts 1.3.8.
We output currency and number values to the JSP with the bean:write tag and this works well.


The problem comes when the user is entering numbers, currency and dates via an html:text field.

Ideally it would be nice if the conversion to US/UK format was handled automatically so any 
subsequent parsing and arithmetic would work. I cant find any way to get the html:text tag to do 
this - various texts I hav read suggest that it is locale-sensitive but if I put a "format" or 
"formatKey" attribute in the tag the poage does not compile.


It occurs to me that this must be a generic issue.
Is there a standard solution for handling input of numbers and dates in non-US format?
If so what is it?

If the conversion cannot be automatic is it best handled  or in the action or actionform?




Thanks - Adam


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Re: Handling international number and date formats in html:text fields

[Laurie Harper <la...@holoweb.net>]

Adam Lipscombe wrote:
> Folks,
> 
> We have an internationalised site using struts 1.3.8.
> We output currency and number values to the JSP with the bean:write tag 
> and this works well.
> 
> The problem comes when the user is entering numbers, currency and dates 
> via an html:text field.
> 
> Ideally it would be nice if the conversion to US/UK format was handled 
> automatically so any subsequent parsing and arithmetic would work. I 
> cant find any way to get the html:text tag to do this - various texts I 
> hav read suggest that it is locale-sensitive but if I put a "format" or 
> "formatKey" attribute in the tag the poage does not compile.

Well, according to the documentation [1], that tag doesn't support 
format or formatKey attributes. You would need to first format the data 
via other means (a combination of bean:define and bean:write, for 
example, or using the JSTL formatting tags/functions), then supply the 
formatted data via html:text's value attribute.

Here's one possibility (untested):

   <c:set var="num">
     <fmt:formatNumber value="${someData} pattern="..."/>
   </c:set>
   <html:text name="someprop" value="${num}"/>

> It occurs to me that this must be a generic issue.
> Is there a standard solution for handling input of numbers and dates in 
> non-US format?
> If so what is it?
> 
> If the conversion cannot be automatic is it best handled  or in the 
> action or actionform?

I'd say in the action personally, though that's really a matter of 
preference.

L.


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