[Catalyst] ways to do stuff and why

[Matt S Trout]

John Napiorkowski wrote:
> You may want to review the thread, "Plugins vs. Base Controllers" to see what some of the lead architects have to say on the issue at least regarding 2/3 and 4.  I think choosing between 2/3 is really a matter of what can be reused usefully and what is overkill design.  For 1 I am not sure but I only put a little logic in the models for stuff directly related to the model, like to encapsulate very frequently used queries.  Not sure what other people have to say.  Purists I think don't want any logic in the model, from what I gather.

Eeeeek, not at all. The model should encapsulate *all* business logic and 
similar - it should be a model of the domain with which the app interacts. The 
Controller should be as thin a layer as possible whose sole purpose is to 
arbitrate between the model's view of reality and the user interface (i.e. the 
view)

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