gistfile1.rb

  def index
    if params[:query]
      respond_to do |format| # ActionController::UnknownFormat
        if params[:type] == "name"
          @items = @store.items.where(name: params[:query])
          format.js
        elsif parms[:type] == "category"
          @items = @store.items.where(category: params[:query])
          format.js
        end
      end
    else
      @items = @store.items
    end
  end