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advancedSearch: (field_name = null, values = []) ->
    options = []
    if arguments.length is 1 and _.isArray field_name
      options = field_name
      for option in options
        if option[1] and !_.isArray option[1]
          option[1] = [option[1]]
    else if arguments.length is 1 and _.isObject field_name
      options = []
      _.each field_name, (values, field_name) =>
        if !_.isArray values
          values = [values]
        options.push [field_name, values]
    else
      if !_.isArray values
        values = [values]
      options = [[field_name, values ]]
    @filter (item) =>
      len = options.length
      checked = 0
      for option in options
        if _.include option[1], item.get option[0]
          checked++
      len is checked