manipulating "params[:some]" with ActiveRecod::Find on ":select" method

Hello all,

I trying to pass the params from a form to the :select (field list) in
my controller

like this => Processo.find :all,:conditions => {
                                                      :tipo_acao_id =>
params[:tipo_acao_id],
                                                      :fase_id =>
(params[:fase_id]),
                                                      :resultado_id =>
(params[:resultado_id]),
                                                      :situacao_id =>
(params[:situacao_id]),
                                                      :justica_id =>
(params[:justica_id])
                                                    }, :select =>
params[:some]

So, the SQL returns an error, the fields are going together w/o spaces
or comma!

How to convert the params[:some] into a formatted string to make sql
works:?:

tnks a lot!!!

That entirely depends on what is in params[:some] (beware sql injection too - can't remember to what extent AR protects you there)

Fred