CoreData validation question
-
Hello list,
I have the following validation method, why is it not working?
-(BOOL)validateNumberField2:(id *)ioValue error:(NSError **)outError
{
NSNumber *inputNumberField2 = *ioValue;
NSNumber *numberField2Stat = self.numberField2;
NSNumber *numberField1Stat = self.numberField1;
if (numberField2Stat != 0) {
if (inputNumberField2 <= numberField1Stat) {
if (outError != NULL) {
NSString *errorStr = NSLocalizedString(@"Error message.",@"Error message");
NSDictionary *userInfoDict = [NSDictionary dictionaryWithObject:errorStr forKey:NSLocalizedDescriptionKey];
NSError *error = [[[NSError alloc] initWithDomain:kValidationDomain code:kValidationnumberField2Code userInfo:userInfoDict] autorelease];
*outError = error;
}
return NO;
}
return YES;
}
return YES;
}
What I want is the following:
The very first object created in CoreData has the initial value of numberField2 = 0.
If you enter a new number for this field it has to be larger then the number in numberField1.
The validation does only work if ,and only if you have already more then 1 object in you CoreData.
What do I have to change in order to make this validation work:
If numberField2 has a value of 0, then return yes, else check if inputNumberField2 is smaller than numberField1. If it is smaller, give validation error, else return yes. I think that the logic of the if statement is sound.
Could someone be so kind and take a look?
Much appreciated
Arnold Nefkens -
On Apr 26, 2010, at 7:51 AM, Arnold Nefkens wrote:
> Hello list,
>
> I have the following validation method, why is it not working?
>
> -(BOOL)validateNumberField2:(id *)ioValue error:(NSError **)outError
> {
> NSNumber *inputNumberField2 = *ioValue;
> NSNumber *numberField2Stat = self.numberField2;
> NSNumber *numberField1Stat = self.numberField1;
>
> if (numberField2Stat != 0) {
QUESTION: What data type is "numberField2Stat" ?
ANSWER: it's a POINTER to an NSNumber (not a numeric value).
therefore it's very likely to never be zero.
> if (inputNumberField2 <= numberField1Stat) {
QUESTION: What data type is "numberField1Stat" ?
ANSWER: it's a POINTER to an NSNumber (not a numeric value).
therefore ...... _____ ?
consider using the intValue of your NSNumbers.
----------------------------------------------------------------
Steve Bird
Culverson Software - Elegant software that is a pleasure to use.
www.Culverson.com (toll free) 1-877-676-8175 -
Thanks,
That was just what I needed..... It now works... Thanks again... Sometimes I am a bit lost. Started with iPhone development & Obj-C less then three months ago....
On 26 apr 2010, at 14:15, Steve Bird wrote:
>
> On Apr 26, 2010, at 7:51 AM, Arnold Nefkens wrote:
>
>> Hello list,
>>
>> I have the following validation method, why is it not working?
>>
>> -(BOOL)validateNumberField2:(id *)ioValue error:(NSError **)outError
>> {
>> NSNumber *inputNumberField2 = *ioValue;
>> NSNumber *numberField2Stat = self.numberField2;
>> NSNumber *numberField1Stat = self.numberField1;
>>
>> if (numberField2Stat != 0) {
>
> QUESTION: What data type is "numberField2Stat" ?
> ANSWER: it's a POINTER to an NSNumber (not a numeric value).
> therefore it's very likely to never be zero.
>
>> if (inputNumberField2 <= numberField1Stat) {
>
> QUESTION: What data type is "numberField1Stat" ?
> ANSWER: it's a POINTER to an NSNumber (not a numeric value).
> therefore ...... _____ ?
>
> consider using the intValue of your NSNumbers.
>
> ----------------------------------------------------------------
> Steve Bird
> Culverson Software - Elegant software that is a pleasure to use.
> www.Culverson.com (toll free) 1-877-676-8175
>
>
