Please keep replies on list.
On Mar 20, 2008, at 1:48 PM, Yury Peskin wrote:
Chuck,
So what you're saying is to move the validation into form action
instead of the EO and throw the exception there?
No. Absolutely not! I am suggesting that ensuring this is unique is
not trivial.
Chuck
Something like this:
public WOComponent formAction()
{
NSMutableArray args = new NSMutableArray();
args.addObject(project.orderNum);
Project newProject = EOUtilities.objectWithQualifierFormat(ec,
"Project", "orderNum = %@", args);
if(newProject != null)
{
validationDictionary.setObjectForKey(Boolean.TRUE,
"project.orderNum");
validationDictionary.setObjectForKey("This number is already in
use.”, "project.orderNum" + "ValidationString");
return null;
}
else
return nextPage;
}
Thank you,
Yury Peskin
-----Original Message-----
From: Chuck Hill [mailto:[EMAIL PROTECTED]
Sent: Thursday, March 20, 2008 3:38 PM
To: Yury Peskin
Cc: 'WebObjects Development'
Subject: Re: Yet Another Question
On Mar 20, 2008, at 1:33 PM, Yury Peskin wrote:
Hello List,
I have an order number in my EO and I need to have it be a unique
number.
How can I check that my users did not type in an identical number?
I’m trying to do validation and my validation right now looks like
this:
public String validateOrderNum(String value) throws
NSValidation.ValidationException
{
// Check the order number is unique
NSMutableArray args = new NSMutableArray();
Args.addObject(value);
EOEditingContext ec = session().defaultEditingContext();
Remove
Project project = EOUtilities.objectWithQualifierFormat(ec,
“Project”, “orderNum = [EMAIL PROTECTED], args);
Change to
Project project =
EOUtilities.objectWithQualifierFormat(editingContext(), “Project”,
“orderNum = [EMAIL PROTECTED], args);
If(project != null)
Throw new
NSValidation.ValidationException(“This number is already in use.”);
}
I keep getting “cannot find symbol” on the ec and the EOUtilities
lines.
Is there a way I can get this type of validation to work
That will leave you with a race condition. It is NOT to be depended
on. The ONLY way to be certain is to add a unique constraint in the
database and and check for failures during save changes.
Chuck
--
Practical WebObjects - for developers who want to increase their
overall knowledge of WebObjects or who are trying to solve specific
problems.
http://www.global-village.net/products/practical_webobjects
--
Practical WebObjects - for developers who want to increase their
overall knowledge of WebObjects or who are trying to solve specific
problems.
http://www.global-village.net/products/practical_webobjects
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