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Beldar  
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 More options Apr 2 2012, 6:52 am
From: Beldar <beldar....@gmail.com>
Date: Mon, 2 Apr 2012 03:52:16 -0700 (PDT)
Local: Mon, Apr 2 2012 6:52 am
Subject: Three way relationship
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Hi again,

Quick question is it possible to make a 3 way relation (like a n:n but with
3 entities with a single join table) without making the relation table a
full Entity?

Example:
We have 3 Entities, Transportation, Trip, and User and we need to relate
those 3 things, so we have a middle table called Trans_Trip_User with 3
primary foreign keys involving the 3 entities.

How would you approach this problem using Doctrine 2.2?


 
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David Rolston  
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 More options Apr 2 2012, 8:07 pm
From: David Rolston <gizm...@gmail.com>
Date: Mon, 2 Apr 2012 17:07:48 -0700
Local: Mon, Apr 2 2012 8:07 pm
Subject: Re: [doctrine-dev] Three way relationship
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I wouldn't.  I would give Trans_Trip_User table its own primary key, and
set the other tables up as standard foreign key relationships.  In general
any multi-column key is a problem for Doctrine v1 and v2.

 
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Marco Pivetta  
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 More options Apr 2 2012, 8:24 pm
From: Marco Pivetta <ocram...@gmail.com>
Date: Tue, 3 Apr 2012 02:24:24 +0200
Local: Mon, Apr 2 2012 8:24 pm
Subject: Re: [doctrine-dev] Three way relationship
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Indeed. You can still use an unique key for these 3 join columns, but a
simple identifier is much easier to handle :)
Marco Pivetta

http://twitter.com/Ocramius

http://marco-pivetta.com

On 3 April 2012 02:07, David Rolston <gizm...@gmail.com> wrote:


 
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