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Saving many-to-many relationship
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sbelini View Drop Down
IdeaBlade
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Joined: 13-Aug-2010
Location: Oakland
Posts: 786 		Post Options Post Options   Quote sbelini Quote  Post ReplyReply Direct Link To This Post Topic: Saving many-to-many relationship
    Posted: 22-Jul-2011 at 8:39am
Hi CJBriers,

This is a bug that has been fixed.

DevForce 6.1.2 will have the fix and will be available early in August.

Silvio.
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CJBriers View Drop Down
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Joined: 20-Jul-2011
Posts: 5 		Post Options Post Options   Quote CJBriers Quote  Post ReplyReply Direct Link To This Post Posted: 22-Jul-2011 at 7:38am
Let's say we have a many-to-many relationship between Person and Pet entities (with no payload).  When adding an existing Pet entity to a Person and saving the Person entity:

aPerson.Pets.Add(aPet);
EM.Instance.SaveChangesAsync(new [] {aPerson}); //we're using singleton pattern

This causes a duplicate (same data, different ID) aPet entity to be saved to the DB.  

However, if I do this:

aPerson.Pets.Add(aPet);
EM.Instance.SaveChangesAsync(); 

No duplicate entry is saved to the DB.  Due to the nature of our application, I really prefer saving only the aPerson entity and not the Pet entities. Any way to do this?


Edited by CJBriers - 03-Aug-2011 at 6:48am
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