How can a plugin modify the ajax server params?

phazei

I'm using dataTables 1.10 from the repo, 4-15

I'm trying to write a plugin that adds a dropdown with columns based on particular column options. Then whenever the data is pulled from the server, either via a filter search or reordering of the columns, I need that extra data to be sent in the data object.

I have the dropdown being created just find, but I'm not sure where to hook in to manipulate the data.

Looking through the code, I found the serverParams, but it's not documented in the 1.10 references. Is it only for compatibility? Is there a more proper place to hook into that in 1.10?

The only other think I could think of was somehow over riding the _fnAjaxParameters prototype with another function that calls it and edits it's returned data, and passes that along, which I'm not quite clear enough on the workings of js to know if it's possible or not.

allan

Darn - yes, I missed that in the upgrade for 1.10. I think I'll need to add a a`preAjax` event or something like that. Let me have a bit of a think on the best way of doing it and I'll get back to you.

Allan

allan

I've added a `preXhr` option here: https://github.com/DataTables/DataTablesSrc/commit/729581eb9

So now you can do something like:

[code]
$('#example').on('preXhr.dt', function ( e, s, d ) {
d.extra = 1;
} );
[/code]

Thanks for flagging this up!

Allan

jsm174

I've been using this and it seems to be working well in Chrome, and FF. It does not work in IE8. I put an alert in, and it's never fired.

_criterionTable = $("#criterion-table").on("preXhr.dt", 
function (e, settings, data) {
       alert("HERE");
       data.eventId = "1";
     })
     .DataTable({
         stateSave: true
.
.
.

Am I missing something, or is this a bug?

Thanks

Jason

jsm174

I just updated to the nightly, and it's now working in IE8.

Thanks,

Jason

allan

Hi Jason,

Great to hear that the nightly is doing the business for you. Planning to release it as 1.10.1 next week with a few other fixes in.

Allan