Redirect Back with Value

Thank you.

I use this all the time, and it works very well. The issue is, that when

Code:

return redirect()->back()->withInput(); 

is called,  the it seems the controller is reloaded and this obviously calls the index function, and my index function is expecting a server POST (or GET), so I get caught in an infinite loop.

Is there a way of passing the original variable in the redirect so my controller can process?