ajax 204 NoContent with no JSON in the response, will fire the ajax error handler.

LordTonix

After a ton of research, ajax blows up on a 204 if the body is empty, because it gets Content-Type: application/json so it attempts to parse the body for JSON and explodes. According to the jQuery: "your server design is flawed and broken." https://github.com/jquery/jquery/issues/2347 this is nonsensical.

Research says that if I do dataType: 'text' then jQuery will not try and parse the body, but DataTables does not seem to pass this to jQuery. For the record, I am using DataTables Editor REST interface.

               var editor = new $.fn.dataTable.Editor({
                    ajax: {
                        remove: {
                            type: 'DELETE',
                            url: 'http://localhost:53112/api/InventoryItems/_id_',
                            data: function (d) {
                                return JSON.stringify(d.data["0"]);
                            },
                            dataType: 'text' // <------ DOES NOT WORK
                        },
                    },
                    table: '#inventoryItems',
                    idSrc: 'Id',
                    fields: [
                        {
                            "label": "Name:",
                            "name": "Name"
                        },
                        {
                            "label": "Description:",
                            "name": "Description"
                        }
                    ]
                });

LordTonix

Solution:

Override complete and use this:

complete: function(xhr, textStatus) {

    // jQuery does not respect a 2xx with a JSON content type/data type and an empty body.
    if ((xhr.status === 200 || xhr.status === 204) && xhr.responseText === "") {
        xhr.responseJSON = {};
        xhr.responseText = "{}";
    }

 }

hnhegde

I am using jQuery 3.4.1. And I am seeing the same problem. Complete is not being overridden either. Any suggestions?

Thanks,
Harsha

hnhegde

I have it working now. Have noted down my solution in this thread.

Regards,
Harsha