Submit Once, Validate Twice -- but how ?
Hi, just read this article on husted.com and it seems to be good advice. When the user submits a page, passes validation without errors, is there a chance to validate business logic in the action ? Therefor i need to - make my validation, - get an errors object, - store the error, - put the errors object in the request and - return to input page. Has anyone some sample code / suggestions / articles / sources hoe to achieve this ? Thx - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: Submit Once, Validate Twice -- but how ?
I don't have sample code but are you looking for something like this: // in Action execute... ActionErrors errors = new ActionErrors(); // add errors... ... // set in request request.setAttribute(org.apache.struts.action.ERROR, errors); // forward to same page... Thanks -- pady [EMAIL PROTECTED] -Original Message- From: Frank Schaare [mailto:[EMAIL PROTECTED] Sent: Wednesday, March 24, 2004 3:35 PM To: Struts Users Mailing List Subject: Submit Once, Validate Twice -- but how ? Hi, just read this article on husted.com and it seems to be good advice. When the user submits a page, passes validation without errors, is there a chance to validate business logic in the action ? Therefor i need to - make my validation, - get an errors object, - store the error, - put the errors object in the request and - return to input page. Has anyone some sample code / suggestions / articles / sources hoe to achieve this ? Thx - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] __ This email has been scanned by the MessageLabs Email Security System. For more information please visit http://www.messagelabs.com/email __ __ This email has been scanned by the Heroix e-mail Security System __ - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Submit Once, Validate Twice -- but how ?
Hi, thank you, that helps. Now i still need to know how to access the input page (set in action mapping with the input=sample.jsp tag)... I don't have sample code but are you looking for something like this: // in Action execute... ActionErrors errors = new ActionErrors(); // add errors... ... // set in request request.setAttribute(org.apache.struts.action.ERROR, errors); // forward to same page... Thanks - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: Submit Once, Validate Twice -- but how ?
At 3:58 PM -0500 3/24/04, Pady Srinivasan wrote:
I don't have sample code but are you looking for something like this:
// in Action execute...
ActionErrors errors = new ActionErrors();
// add errors...
...
// set in request
request.setAttribute(org.apache.struts.action.ERROR, errors);
// forward to same page...
When executing validation in an Action, you should use the Action
method saveErrors rather than directly manipulating the request
attributes; this guarantees that the errors will be placed in the
same place that other code is looking for them.
Here's the response I was drafting when this came in:
public ActionForward execute(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response) throws
Exception
{
ActionMessages errors = processBusinessValidation(...);
if (!errors.isEmpty())
{
saveErrors(request,errors);
return mapping.getInputForward();
}
// normal business logic
return mapping.findForward(...);
}
private ActionMessages processBusinessValidation(...)
{
ActionMessages errors = new ActionMessages();
// execute validation, populate errors if necessary
return errors;
}
--
Joe Germuska
[EMAIL PROTECTED]
http://blog.germuska.com
Imagine if every Thursday your shoes exploded if you tied them
the usual way. This happens to us all the time with computers, and
nobody thinks of complaining.
-- Jef Raskin
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Re: Submit Once, Validate Twice -- but how ?
On Today at 9:58pm, FS=Frank Schaare [EMAIL PROTECTED] wrote: FS Hi, FS FS thank you, that helps. FS FS Now i still need to know how to access the input page (set in action FS mapping with the input=sample.jsp tag)... Hopefully you will see Joe's response in the same thread, which has the following line in it: return mapping.getInputForward(); Later, -- Haroon Rafique [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
