Calculated column

[muezz]

Is it possible to have a column that is not editable (read only) but updates as referenced cell values are edited?

I suspect I could do it outside Slickgrid (manually) but I am wondering if this is supported or not.

[ghiscoding]

I'm not exactly sure what you mean, you should probably search on Stack Overflow for SlickGrid update and such.

[muezz]

I meant like a column that is calculated based on other columns and is not edit-able itself.

[ghiscoding]

I'm not sure if you're talking about column width calculation (see docs) or if you're talking about calculating 2 cell property and show its total on another cell on the right, if that's the case then just use a Custom Formatter, the 4th and 5th arguments are columnDef and dataContext (item), you have access to the entire row item (dataContext) so you can easily calculate stuff and then use Grouping if you need to calculate group totals.

const sumFormatter: Formatter = (row, cell, val, columnDef, dataContext) => {
  const total = dataContext['price'] * dataContext['qty']; // calculate
  dataContext[columnDef.field] = total; // assign
}

[muezz]

Yes. I did mean something like this where the data from server is just col1 and col2 but the UI (Slickgrid) shows 3 columns and the col3 is just some aggregation (like sum) of the other columns.