[whiteowl]

Originally Posted by thiago.eec

I think the problem is that the template is returning a string when you choose 'percent'. I have a custom column with my reading percentage, but it was created as a 'Floating point number' and I added this formatting: {:.0f}%. It sorts just fine.

Sorry, I do not understand how you did it.

When I click on "Read Progress" template - it creates a "Column type: Column built from other columns". There is no field for formatting.
Attempt to change that column type to Float, adds a field "Format for numbers", but removes the "Template" field with the function.

So: how do you format the "Column built from other columns"?

Originally Posted by thiago.eec

For now, you can use the template below to activate sorting:

program:
	format_number(reading_progress($id, '', 'pos_frac')*100, '{:.0f}')

You will get the same as using 'percent' minus the '%' symbol. And now you can sort.

Again: How? What should I click in the UI to get to the field where I would be able to type that expression?