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Re: Custom alerts for Core Data validation errors ... how to?



On Nov 30, 2007, at 12:30 PM, Richard Wolf wrote:

But what I can't find is a way to do this:

BOOL result = [*ioValue matchesRegularExpression:@"[A-Z0-9]{32,32}"];

NSPredicate has a matches-regular-expression operator.

That's how the validation conditions you define in your model are actually represented at runtime; see the documentation for NSPropertyDescription's validationPredicates property.

  -- Chris

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References: 
 >Custom alerts for Core Data validation errors ... how to? (From: Richard Wolf <email@hidden>)
 >Re: Custom alerts for Core Data validation errors ... how to? (From: mmalc crawford <email@hidden>)
 >Re: Custom alerts for Core Data validation errors ... how to? (From: Richard Wolf <email@hidden>)



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