def to_params_hash(keys,values)
      hash = {}
      keys.size.times { |i| hash[ keys[i].to_sym ] = values[i] }
      hash
    end
def to_params_hash(keys,values)
      hash = {}
      keys.size.times { |i| hash[ keys[i].to_sym ] = values[i] }
      hash
    end
zip up two arrays of keys and values from an incoming request