render dropdown for single column in DT shiny BUT loaded only on cell click and with replaceData()

Question

Goal

• To have select dropdown in DT datatables not at the building of the datatable but built on cell click, with replaceData() and with the datas

Answer 1

You have to unbind before running replaceData.

ui <- fluidPage(
  tags$head(tags$script(
    HTML(
      "Shiny.addCustomMessageHandler('unbindDT', function(id) {
        var $table = $('#'+id).find('table');
        if($table.length > 0){
          Shiny.unbindAll($table.DataTable().table().node());
        }
      })")
  )),
  title = 'Selectinput column in a table',
  ......

and in server:

  ......
  session$sendCustomMessage("unbindDT", "foo_dt")
  ReplaceData_foo_dtRefresh (react)