Symfony app - how to add calculated fields to Propel objects?

Posted by Thomas Kohl on Stack Overflow See other posts from Stack Overflow or by Thomas Kohl
Published on 2008-10-29T10:56:19Z Indexed on 2010/03/26 13:23 UTC
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php

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propel

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symfony

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orm

What is the best way of working with calculated fields of Propel objects?

Say I have an object "Customer" that has a corresponding table "customers" and each column corresponds to an attribute of my object. What I would like to do is: add a calculated attribute "Number of completed orders" to my object when using it on View A but not on Views B and C.

The calculated attribute is a COUNT() of "Order" objects linked to my "Customer" object via ID.

What I can do now is to first select all Customer objects, then iteratively count Orders for all of them, but I'd think doing it in a single query would improve performance. But I cannot properly "hydrate" my Propel object since it does not contain the definition of the calculated field(s).

How would you approach it?

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