Better than if(count($_POST) > 0)

[eluser]veledrom[/eluser]
Hi,

I want to check if POST occurred or not. Currently I'm using code below. I wonder if there is a better way of doing it with CI?

Thanks

Code:

do_save()
{
   if(count($_POST) > 0)
   {
      //Validate fields with form validator
   }
   else
   {
      redirect('index');
   }
}