Why does $this->input->is_ajax_request() = FALSE?

[eluser]bill19[/eluser]
Hi John_j,

Thanks for looking at this. I have read http://ellislab.com/codeigniter/user-gui...input.html . When I run the project ,I see no errors in firebug. When I step through the code with xdebug I find that $this->input->is_ajax_request() outputs FALSE. After some googling I came across http://ellislab.com/forums/viewthread/187859/#888203 which leads to http://ericlbarnes.com/blog/codeigniter-...-with-ajax, which is what the file js/plugins.js is about ( according to the author )

My question is what steps do I need to take to figure out why $this->input->is_ajax_request() outputs FALSE.

Thanks,

Bill