Get the value of a specific column by column name

[remkonoteboom]

I think I understand what you are trying to do.  You have a custom layout that contains UI elements that are in a table cell and you want to be able from that cell.

If that is indeed what you want to do, then all you need to do is set the spt_input_value attribute of the cell.  This is what saving changes in a table looks for.

Code:

var cell = el.getParent(".spt_edit_cell");
cell.setAttribute("spt_input_value", json_value);

and then do the spt_cell_changed, spt_row_changed that you are doing.

This might be useful to have as a singular function.

spt.table.set_cell_value() or something like that.