Your diagram states, ‘Managers and model objects together form “The Model.”‘ Model are data objects and not really where you would be performing business logic. The only purpose of the model object to to feed data to the Presentation Model, which renders the data in the view.

@ Carey Belser

Sure, I’ll try. To transfer a photo from the Web application server to the Flex client it is desirable to have a PHP array of bytes data type so the the Flex client can received this photo as an ActionScript 3.0 ByteArray data type. PHP does not have a byte array data type. The closes PHP data type is String. Accordingly, internal to the Web application server we watch for a (very long) string data type and if the long string has the right photo data header bytes, the we internally convert the photo data type to a ActionScript 3.0 ByteArray data type. The Flex 3 or 4 built client can conveniently render photos that are received as AS 3.0 ByteArrays.

Pete

Business logic is best handled in the Managers.

It is apparent to me that you do not have a full appreciation of how Mate is to be used. A good way to master using Mate is to build, run, observe operations, and understand most of the Mate examples found here: http://mate.asfusion.com/page/examples