Answers

• allan Posts: 65,489Questions: 1Answers: 10,877 Site admin

  January 20

  Hi,

  Use cell().data() or row().data() to update the underlying data. Then call draw() to redraw the table with the new information.

  Regards,
  Allan
• lowrymel Posts: 30Questions: 7Answers: 0

  January 20

  Thanks for the reply. I was not concerned with updating the underlying data which is an array. What I want to do is to be able to update the number that is being generated by the render on the length of the array. So in your parentChild example each user shows as having 6 users. Functionally I want to add a new user and update the user count to 7 without doing the round trip to the server for a table update. I am envisioning having thousands of rows in the main table that each could have upto 10 child data counters. So again just trying to avoid the round trip of each change of child data. Is this possible?
• kthorngren Posts: 22,388Questions: 26Answers: 5,142

  January 20 edited January 20 Answer ✓

  I would use cell().data() to update the array to add the new user then when draw() is called the render function will run updating the cell's display:

  data: 'users',
  render: function (data) {
  return data.length;
  

  Here is a simple example:
  https://live.datatables.net/vovacoxi/1/edit

  Click on a Position cell to update the User's array and update the array length dsiplay.

  Kevin
• kthorngren Posts: 22,388Questions: 26Answers: 5,142

  January 20

  You can do something similar with row().data() if that is more appropriate for your solution.

  Kevin
• lowrymel Posts: 30Questions: 7Answers: 0

  January 20

  Thanks kthorngren. That is a nice simple solution.