ajaxPrefilter

[anonymous]

When you use object for your data in an ajax request and want to add more data to this object with "ajaxPrefilter", it does not work, options.data is converted in an url encoded string.

It is better to use an object type for "options.data".

[ajpiano]

Confirmed: ​http://jsfiddle.net/Ae3Kg/

Is this something we should fix or is it intended behaviour?

[jaubourg]

It is intended behaviour. A string can be passed as data, so decision was taken to serialize non-string data so that a prefilter always has the same "presentation" of the data option.

Relying on data not being a string is wrong and will result in programming errors seeing as a user is perfectly entitled to call ajax with data as a string.

I know it sucks since it means more work in the prefilters to add data in but that's the price to pay for consistency: your prefilter should work with options.data being a string anyway.