Re: validating deleting an object with relationship
Re: validating deleting an object with relationship
- Subject: Re: validating deleting an object with relationship
- From: Johan Henselmans <email@hidden>
- Date: Tue, 19 Jan 2010 08:51:19 +0100
On 19 jan 2010, at 01:54, Chuck Hill wrote:
>
> On Jan 18, 2010, at 4:49 PM, Johan Henselmans wrote:
>
>> I want to delete an EO object only if some data is not available in one of its relationships.
>
> Can you not use a delete rule? Deny is what you want.
>
No, at least from my understanding the deny delete rule is based on the fact that there are still entities on the other side of the relationship. Or is there some ways to programmatically tell that the denty rule to be triggered based on a date?
Basically I do not want entities to be deleted with relationships that have have a changedate in the past, only current and future entities may be deleted. (I am building a time machine and I want to make sure nobody can delete the goats on our famous island in the pacific)
>
>>
>> validateForDelete() can not be used, because before that us called the relations have already been obliterated.
>>
>> mightDelete() gives the required info, but does not raise a validation exception.
>>
>> How does one raise a validation exception in this situation, so that it will give these nice Yellow messages in a direct To Web Application?
>>
>> <PastedGraphic-1.png>
>>
>> Johan Henselmans
>> email@hidden
>>
>>
>>
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> --
> Chuck Hill Senior Consultant / VP Development
>
> Practical WebObjects - for developers who want to increase their overall knowledge of WebObjects or who are trying to solve specific problems.
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Regards,
Johan Henselmans
http://www.netsense.nl
Tel: +31-20-6267538
Fax: +31-20-6279159
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