block fields returned by find ( 'all') or paginate

Hello,

I would like to return some fields at my requests find ( 'all').
I wish I could define the model in order not to every request, return
the fields that I would like to see return.
I have belongsto class products and categories that hasmany products.
Class I and which belongto varieties and varieties that belonsto
category.

In each table wholesale I fields id, libel, created, modified

I can not find the solution to paginate in and find ( 'all') than it
returns me that the fields id, but not libel fields created and
modified and whatever the level of recursion.

Thank you in advance for your help
A.B

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