sorting -pre -asc and -desc

xtech_dev

I'm developing custom ordering plugin based on: https://datatables.net/manual/plug-ins/sorting

What is the meaning of -pre function? Does it prepare data for -asc and -desc functions or -asc and -desc does not matter when -pre is defined?

xtech_dev

Ok, got it.

-pre wont work with -asc, -desc (it's a pity).

From docs:
"Note that in DataTables 1.10 a pre-formatter cannot be used with custom -asc and -desc methods - to use custom ordering functions you cannot apply a pre-formatter. This limitation will be addressed in the next major version of DataTables."

colin

Hi @xtech_dev ,

I think that comment is out of date - it does work with them, see a one of my plugins here.

In that example, the "-pre" formats the data into something that's easily comparable by the "-asc" and "-desc" functions. If there isn't a "-pre" function, the "-asc" and "-desc" will just use the raw data for that cell.

Hope that helps,

Cheers,

Colin

xtech_dev

Well it seems that -pre function does not takes in to account the .render function. I have done some preprocessing in my render function for non 'display' type. But when -pre is running not calls for render are made.

kthorngren

I built a simple example based on the example in the doc you linked to. The -pre function seems to work:
http://live.datatables.net/sefonamu/1/edit

Please provide an example of what you are trying so we can help debug.

Kevin