jquery datatables: update table cell after button click

Question

we have a table in our page, with a few rows and a custom toggle button at the end. the table is loaded via html in the page, not via json.

now, the togglebutton at the end posts to a service and sets the follow state of that record in the database.

however, it should also make an update to another cell in that row. however i'm sure i should not do this via jquery manually but via datatables?

$('#tblFollow').dataTable({
    sDom: "t",
    aoColumns: [
      null,
      null,
      null,
      { bSortable: false }
    ]
});

$('#tblFollow').on('click', 'a.follow', function(e){
    $(this).toggleClass('active');

    // updating column 'following' here... 
    // but this only changes visually, and not the inner datatables data used for sorting
    var followingCell = $(this).parents('td').prev();
    var txt = followingCell.text() == "1" ? "0" : "1";
    followingCell.text(txt);

    return false;
});

manual example: now i have an example, where i change the fields manually, but that's only visual, the datatable still uses its inner data for sorting. So i'm looking for a way to do it better

Answer 1

Here is a possible solution:

In addition to your code you should update the datatables data as following

var rowIndex = table.fnGetPosition( $(this).closest('tr')[0] );
var aData = table.fnGetData( rowIndex  );
aData[2] = txt; //third column

Here the jsfiddle

And even better solution would be to use fnUpdate to update the data and display in the same time

Here the jsfiddle

// update column following here... 
var followingCell = $(this).parents('td').prev();
var txt = followingCell.text() == "1" ? "0" : "1";

var rowIndex = table.fnGetPosition( $(this).closest('tr')[0] );
table.fnUpdate( txt, rowIndex , 2);

---

Also instead of us

var followingCell = $(this).parents('td').prev();
var txt = followingCell.text() == "1" ? "0" : "1";

use

var aData = table.fnGetData( rowIndex  );
aData[2] //use it to check if the value is 0 or 1