Answers

• kthorngren Posts: 21,344Questions: 26Answers: 4,954

  April 16 edited April 16

  The test case has a few issues:

  1. The selector used to init Datatables, $('#milestoneopptable').DataTable(...);, doesn't match the table ID.
  2. The mockData data needs to be an array of objects.
  3. This error is occrung:

  DataTables warning: table id=example - Requested unknown parameter 'AccountManagerId' for row 0, column 11. For more information about this error, please see https://datatables.net/tn/4

  Column 11 is defined with data: 'AccountManagerId' but your data doesn't have this object. Probably just a test case error. Ignoring this error the Datatable loads without the Cannot reinitialise DataTable error.

  Updated test case:
  https://live.datatables.net/bumoveje/3/edit

  Did you follow the troubleshooting steps at the link in the error?
  http://datatables.net/tn/3

  In your code flow you are calling $('#milestoneopptable').DataTable() more then once. You might be inadvertently trying to get an instance of the API with $('#milestoneopptable').DataTable(), which will init with default settings, before the initialization code which will result in the error.

  If you still need help please update the test case to demonstrate the Cannot reinitialise DataTable error.

  Kevin
• lightstudios Posts: 9Questions: 3Answers: 0

  April 17

  How in my code flow am I calling $('#milestoneopptable').DataTable() more than once? I couldn't put the actual way I'm trying to implement this datatable which is actually through the success function of an AJAX call. Can you take a look at these screen shots? I'm getting the data back in the right format but now it's saying that no matching records can be found.
  
• allan Posts: 63,535Questions: 1Answers: 10,475 Site admin

  April 17 edited April 17

  Can you link to the page, or show the full JS please? The code in your latest screenshot doesn't appear to be valid JS, but it might just be due to it being snippets.

  If you can't link to the page, can you also show the Ajax response from the server please.

  Allan
• lightstudios Posts: 9Questions: 3Answers: 0

  April 17

  @allan https://playcode.io/1839479
• lightstudios Posts: 9Questions: 3Answers: 0

  April 17

  @allan I also put a file in there called ajaxresponse, i just included one of the objects that is getting returned in result.data
• kthorngren Posts: 21,344Questions: 26Answers: 4,954

  April 17 edited April 17

  Looks like you added retrieve: true after your test case. With this do you still get this error?

  DataTables warning: table id=milestoneopptable - Cannot reinitialise DataTable.

  I found this in you playcode.io:

              $('#ProcessFilters').on('click', function () {
                  oppMilestoneReport.loadResults();
              })
  

  I suspect you didn't have retrieve: true and were getting the Cannot reinitialise DataTable the second time this event was fired. Is this correct?

  Since you added retrieve: true the configuration won't change, see the retrieve option for details. This means the second time oppMilestoneReport.loadResults() is called in that click event the fetched data won't be loaded.

  If my assumptions are right then I suggest using DataTable.isDataTable() to see if Datatables has been initialized. If not initialized then initialize it. Instead of using data to load the data use rows.add() after initialization. Something like this:

                               if ( !DataTable.isDataTable('#milestoneopptable') ) {
                                  table = $('#milestoneopptable').DataTable( {
                                    ordering: false,
                                    paging: false,
                                    dom: 'Bt',
                                    columns: columns
                                      } );
                               }
  
                               table.clear();  // clear existing table data
                               table.rows.add( result.data ).draw();
  

  If my assumptions are incorrect then provide more details of what is currently happening. Better is a running test case to show the issue so we can see what is happening to help debug.
  https://datatables.net/manual/tech-notes/10#How-to-provide-a-test-case

  Kevin
• lightstudios Posts: 9Questions: 3Answers: 0

  April 17

  @kthorngren Thanks for the response. I tried your way and it's still not working. I'm getting this console error: Uncaught TypeError: Cannot read properties of null (reading 'fnOrder').

  I actually have a test case linked above, and I got it working but that was just with hard coded test data. The problem seems to arise with the way I'm initializing the datable. I'm using ajax call to get the data, then in the success function I'm defining columns and then defining the table. I have the columns hard coded in the html. I guess I'm confused whats the correct way to initialize in this case. I'm updating the code sample if you want to take a look at my entire file.

  https://playcode.io/1839479

  Look in FULLFILE.cshtml

  Thank you
• kthorngren Posts: 21,344Questions: 26Answers: 4,954

  April 17

  Uncaught TypeError: Cannot read properties of null (reading 'fnOrder')

  Sorry not really sure where that is coming from just by looking at your code. We will need to see a test case replicating the issue to help debug. Maybe look at the traceback to see if there is a line in your code that is referenced. That might help narrow down where to look.

  Possibly look at the returned data to make sure you have all the columns in each row. If not you may need to use columns.defaultContent for those column(s).

  I put together a simple example based on your code:
  https://live.datatables.net/dodobuge/78/edit

  It seems to work. For demo purposes I created the variable arraySlice which allows for just getting a slice of the returned array. This allows you to see the table change.

  Other then sending data: data to filter the response data I feel this test case simulates your solution as far as Datatables is concerned. Of course I may be missing something. Maybe you can update my test case to show the issue.

  Kevin
• lightstudios Posts: 9Questions: 3Answers: 0

  April 17

  @kthorngren thanks for the reply and for creating that test case. Where is the ajax/objects.txt being hosted? I didn't know you could host files in there.

  So for my incoming data object, do I need to have columns for every entry in that object? I was under the assumption that the number of columns didn't need to match the number of key value pairs in the object it's using as data.

  I am going to play around with this and see if I can get it working. Thank you
• kthorngren Posts: 21,344Questions: 26Answers: 4,954

  April 17

  Where is the ajax/objects.txt being hosted? I didn't know you could host files in there.

  Allan has some prebuilt examples, some with Ajax. They are documented here. There isn't an option to provide your own ajax data in this environment.

  So for my incoming data object, do I need to have columns for every entry in that object?

  Datatables expects data for each cell in the table. Since its possible the server might not return each column of data for each row Datatables provides the columns.defaultContent option. You may or may not know which columns this might affect. So you could apply columns.defaultContent to every column, like this:

      columnDefs: [
          {
              defaultContent: '',
              targets: "_all"
          }
      ]
  

  See the columnDefs.targets for what _all means and the other options.

  Kevin
• lightstudios Posts: 9Questions: 3Answers: 0

  April 17

  here is where the error is originating. In the file "dataTables.colReorder.min.js" :

  R.fn.dataTable.Api.register("colReorder.order()", function(e, o) {
          return e ? this.iterator("table", function(t) {
              t._colReorder.fnOrder(e, o)
          }) : this.context.length ? this.context[0]._colReorder.fnOrder() : null
      }),
  

  specifically in the colReorder.fnOrder()
• kthorngren Posts: 21,344Questions: 26Answers: 4,954

  April 17

  It doesn't look like you are using ColReorder so the easiest thing to do would be to remove it from the installed libraries. Or, if you have plans to use it, make sure to use the latest version for the Datatables version you are using. If DT 2.0 then use the Download Builder. If DT 1.x then use 1.7.0 or the Legacy Download Builder.

  Kevin