instance method setup

# File actionpack/lib/action_view/render/partials.rb, line 226
      def setup(options, block)
        partial = options[:partial]

        @options = options
        @locals  = options[:locals] || {}
        @block   = block

        if String === partial
          @object     = options[:object]
          @path       = partial
          @collection = collection
        else
          @object = partial

          if @collection = collection_from_object || collection
            paths = @collection_paths = @collection.map { |o| partial_path(o) }
            @path = paths.uniq.size == 1 ? paths.first : nil
          else
            @path = partial_path
          end
        end
      end