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POReflect MySQL polymorphic association in Doctrine 2.2
 

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  1. POReflect MySQL polymorphic association in Doctrine 2.2
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    <p>I'm using Doctrine 2.2.0 together with Codeigniter. I'm new to Doctrine (or to ORM in general).</p> <p>I'm setting up entity and proxy classes based on YAML files which works fine. I do have problems in reflecting a polymorphic association in my DB in my Doctrine classes. I'm looking for a concrete example on how to implement the following polymorphic association in Doctrine.</p> <p>In my DB I have a table called products. Depending on the value of field <code>object_type</code> and <code>object_id</code> I want to relate either to a record in the table videos or the table cars (I simplified it here). I want to keep both product types in 2 separate table because one has nothing to do with the other and both tables relate to other tables.</p> <p>I took a look at the Doctrine Inheritance documentation and other examples, but it doesn't seem to help me. <strong>If possible I want to avoid adding the columns <code>description</code> and <code>price</code> to the tables videos and cars</strong>.</p> <p>Many thanks!</p> <pre><code>|Table: products | |-----------------------------------------------------| | ID | description | price | object_type | object_id | |-----------------------------------------------------| | 1 | A video | 20.00 | video | 12 | | 2 | A car | 159.00 | car | 5 | |Table: videos | |--------------------------------------------| | ID | filename | artist_id | date | |--------------------------------------------| | 12 | somename.mp4 | 189 | 2011-02-15 | |Table: cars | |------------------------------| | ID | brand_id | model | year | |------------------------------| | 5 | 17 | astra | 2010 | </code></pre>
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