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Handling relationship between 2 models

Printed From: IdeaBlade
Category: DevForce
Forum Name: DevForce 2012
Forum Discription: For .NET 4.5
URL: http://www.ideablade.com/forum/forum_posts.asp?TID=4266
Printed Date: 28-Apr-2025 at 5:10am


Topic: Handling relationship between 2 models
Posted By: kdev
Subject: Handling relationship between 2 models
Date Posted: 12-Aug-2013 at 5:46am
Hi,

I have multiple models and wonder how to handle a Foreign key on entities shared among models.

Exemple :

Model A contains entity AA
Model B contains entity BB which has an interger property named AA_Id (it represent a relation to AA.Id)

When entity BB is saved, I want to call in my save interceptor a Service from model A which will generate an AA entity.
This AA entity will have a temporary Id, how can I do to update the AA_ID in my BB entity during the save ? 

Regards,


Replies:
Posted By: sbelini
Date Posted: 12-Aug-2013 at 3:50pm
kdev,

Since DevForce does not support nested save calls, your scenario would not be possible.

An option would be if AA had a non-identity PK (i.e. a GUID), so you could create/add AA, assign the Guid to both AA and BB, and then call return base.ExecuteSave().
The advantage of this approach is that your save would be transactional across both models.



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