panel "Max Amount" do
  table_for user.max_amount do
    column 'Amount', :amount
    column 'time', :updated_at
  end
end

panel "P&L" do
  table_for Quote.order(params[:order].gsub('_', ' ')), sortable: true do
    column("Revenue", sortable: :revenue) { |quote| number_to_currency quote.revenue }
    column("Profit", sortable: :profit)  { |quote| number_to_currency quote.profit  }
  end
end

table_for group.devices.order(
  # Support for column name with underscore
  params[:order].gsub('_asc', ' asc').gsub('_desc', ' desc')
), sortable: true do
  # Directly using symboles and not using sortable:
  column :presence
  column :serial_number
  column :apk_version
  column :firmware_version
end