Datatables column.render - datatables

Question

I am using datatables and would like to over-ride the contents of a cell depending on the value it contains. I am using '1' to flag true in the underlying database and '0' for false. I am attempting to use the Columndefs render function to do this.
Here is my code..
xample_table = $('#treatment_list').DataTable(
{
select: true,
destroy: true,
"order": [ 0, 'desc' ],
data:json,
columns : [
{'data':'treatment_name'},
{'data':'description'},
{'data':'measured_in'},
{'data':'exclusive'}
],
"columnDefs": [
{
"targets":3,
"data" : "exclusive",
"render": function ( data, type, row ) {
if (type === 'display'){
if (row.exclusive == '0')
{
return 'No';
}
else
return 'Yes';
}
}
}
]
}
);
The problem is I get an erro message from datatables that reads..
DataTables warning: table id=treatment_list - Requested unknown parameter 'exclusive' for row 0, column 3....
Apart from the error message, it is in fact working.

Answer 1

thanks for the advice,but the json was fine and the other variables did not reveal much as I had console logged them before posting here. I did find a solution and am posting it here in case it helps anyone else. This expression works :
"columnDefs": [
{
"render": function ( data, type, row ) {
if (data =='1') {
return "True" ;
}
else{
return "False" ;
}
},
"targets": [3]
}
]
In all of the examples I have found, they often included the name of the column being affected and I think this is what caused the error message , whereas - you really just need to include the "targets" : [n] where 'n' is the column number. Perhaps it depends on how the table is constructed ?
Thanks.