Re: Testing if an EO would be deletable
Re: Testing if an EO would be deletable
- Subject: Re: Testing if an EO would be deletable
- From: Paul Hoadley <email@hidden>
- Date: Wed, 20 Jan 2010 08:34:10 +1030
On 20/01/2010, at 5:16 AM, Chuck Hill wrote:
>> I was just reading Johan Henselmans's thread entitled "validating deleting an object with relationship", and it reminded me of a similar question I had recently: is there a convenient way to ask EOF if a particular EO _would be_ deletable if I tried to delete it?
>
> No. The stock validateForDelete() does not follow the the relationships and call validateForDelete() on the to-many with a Cascade delete rule. This does not happen until saveChanges().
>
>> I have a component where I list some EOs, and I want to offer a "Delete" hyperlink next to only those which would be deletable given the model's delete rules. Is the easiest way to do this to call validateForDelete() and see if it throws a ValidationException? I assume that would answer the question, it just seems a bit clumsy.
>
> That will answer it for that one object directly, but the delete may be thwarted by a related object's validateForDelete().
Ah, OK.
> I'd add a custom method like public boolean canBeDeleted() and then also use that in validateForDelete().
Right. Will do.
--
Paul.
http://logicsquad.net/
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