mData / mRender for dealing with nested arrays

maryPo

hello! I'm trying to use the function as shown in this manual https://datatables.net/forums/discussion/11251/datatables-1-9-3.
Once I get the data from the Ajax request.

$.ajax({
        type: "GET",
        url: cr + "/task/getAllTasks.action",
        dataType: "json",
        success: function (data) {
            var searchTable = $('#baseTasks').dataTable({
                "aaData": data,
                "aoColumns": [
                    { "mData": data.solutions,
                      "mRender": "[, ].id"
                    }
                ]
            })
        }
    });

And I got an error "Uncaught TypeError: Cannot read property 'length' of undefined" in the file jquery.dataTables.js:1239.
I tried convert data to json, but the error remains the same.

$.ajax({
        type: "GET",
        url: cr + "/task/getAllTasks.action",
        dataType: "json",
        success: function (data) {
            var searchTable = $('#baseTasks').dataTable({
                "aaData": data,
                "aoColumns": [
                    { "mData": JSON.stringify(data.solutions),
                      "mRender": "[, ].id"
                    }
                ]
            })
        }
    });

So look my data in json format:

 [
   {"id":1,"name":"task","solutions":[{"id":1,"answer":"3","score":5},{"id":2,"answer":"2","score":4}]},  
   {"id":2,"name":"sample","solutions":[{"id":3,"answer":"0","score":0}]}
 ]

I use the DataTables-1.10.5

maryPo

question is not actual already. It was necessary to use

{ "mData": "solutions",
  "mRender": "[, ].id"
 }

instead of

{ "mData": data.solutions,
  "mRender": "[, ].id"
 }