In many areas in the AR API you can specify a :select option to select
only a subset of columns.
Is there any way to change the default selected columns (which is "*")
to a subset of columns for a whole model.
such that when I write Model.find(1) it gives me an instance with
only, say 3 (out of 7), columns. and to fetch all columns I have to
write Model.find(1, :select => "*")
Thanks in advance.