Hi,
I need to validate input when the user enters data on a particular cell (caseNumber) in a table view. Not using coredata but data is stored in a Postgresql database. Here's what I need to ensure:
1- only digits
2- dont already exists in the database
3- dont already exists in the tableview's datasource
4- need to stay on the cell until valid data is entered.
1- easily done use key-value validation (validateCaseNumber:error:)
2- could be done using key-value validation but this imply opening a new database connection (already have one open in master/detail model)
3- this cant be done using key-value validation (no access to the array)
I'm currently using this in a tableview delegate:
- (BOOL)control:(NSControl *)control isValidObject:(id)obj
Which is working fine except that I haven't found a way to customize the error string when returning NO in the above method. Am I missing something obvious?
Thanks,
Andre Masse
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