afac

Hi, i've got problems validating parameters sent to my API route.

    puts "PARAMS"
    puts params.to_json
=begin
  {
    "url":"http://www.last.fm/user/grosbouff/loved",
    "options":{
      "selectors":{
        "playlist":{
          "tracks":{
            "path":"table.chartlist tbody tr"
            }
          },
        "track":{
          "artist":{
            "path":"td.chartlist-name .chartlist-ellipsis-wrap .chartlist-artists a"
            },
          "title":{
            "path":"td.chartlist-name .chartlist-ellipsis-wrap > a"
          },"image":{
            "path":"img.cover-art","attr":"src"
          }
        }
      }
    }
  }
=end
    puts "REQUIRE"
    puts params.require(:url)
    #returns
    #http://www.last.fm/user/grosbouff/love
    puts "PERMIT"
    puts params.permit(:options)
    #returns
    #Unpermitted parameters: :url, :options
    #{}
    
#why is parmas.permit firing an error ???