Topic: how save params in db table correctly ?

I have this error undefined method `stringify_keys' for 1:Fixnum
here is parameters:
{"utf8"=>"✓", "authenticity_token"=>"psYbwIAF0aDCuINmM8AKBQ5K09wU8K/AHqyLBUxJRrQ=", "question"=>{"question_status"=>"1", "created_at"=>"2013-02-06 07:49:10", "updated_at"=>"2013-02-06 07:49:10", "user_id"=>"1", "question"=>"How I can ?"}, "commit"=>"Create", "action"=>"create", "controller"=>"questions"}
controller method:

def create
     Question.create(params[:question][:user_id].to_i,params[:question][:question])
  end

Re: how save params in db table correctly ?

it seems i should get params as a hash...