Multiple controllers per page + Multiple instances of the same model

1,2 and 3 can all be handled by using the Wiredesignz HMVC Modules.

Download: Wiredesignz HMVC Modules

As for the Ajax you use it with CodeIgniter as you would on any other type of web site.

CodeIgniter doe's not restrict you in anyway.

What did you Try? What did you Get? What did you Expect?

Joined CodeIgniter Community 2009.  ( Skype: insitfx )