Re: Owns destination doesn't play well with nullify delete rule?
Re: Owns destination doesn't play well with nullify delete rule?
- Subject: Re: Owns destination doesn't play well with nullify delete rule?
- From: Ramsey Lee Gurley <email@hidden>
- Date: Thu, 25 Nov 2010 09:19:03 -0500
Should there perhaps be an error/warning in entity modeler for this?
Ramsey
On Sep 8, 2010, at 6:15 PM, Chuck Hill wrote:
> It's because if you nullify the relationship, after EOF does that it can't find the related objects to do the cascade delete. Nullify and Cascade are not compatible.
>
> Chuck
>
>
> On Sep 7, 2010, at 7:31 AM, Benjamin Chew wrote:
>
>> Thanks Chuck! Is that because of the owns destination relationship from category to products?
>>
>> Ben
>>
>> On Thu, Sep 2, 2010 at 7:42 PM, Chuck Hill <email@hidden> wrote:
>> You want No Action, not Nullify.
>>
>> Chuck
>>
>>
>> On Sep 2, 2010, at 7:02 PM, Benjamin Chew wrote:
>>
>>> Hi,
>>>
>>> I have a category structure set up with these relationships:
>>> parent category ---cascade delete rule---> child category
>>> parent category <---nullify delete rule--- child category
>>>
>>> category ---cascade delete rule/owns destination---> products
>>> category <---nullify delete rule--- products
>>>
>>> The problem occurs when I have a category with a child category that contains products. When I delete the parent category, I expect the parent and child category, along with all the child category's products to be deleted, but what ends up happening is that the categories are deleted but the products are not.
>>>
>>> When I remove the nullify delete rule from "products" to "category", the parent and child categories are deleted along with the child category's products.
>>>
>>> Does anyone know why this is?
>>>
>>> Thanks,
>>> Ben
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>> --
>> Chuck Hill Senior Consultant / VP Development
>>
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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.
> http://www.global-village.net/products/practical_webobjects
>
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