Token name sent instead of value, if value is zero (0)

Fix pushed.

The original code was checking for an empty value, and replacing with the token name if it is empty. There are clearly values that evaluate to empty that should be posted.

After that, it assumes the value can be evaluated as a string. I'm not sure what other types are being checked here -- if it wasn't a string, then this code wouldn't function at all, unless the substituted value was null, an empty array, or an object that somehow evaluates to empty.

I changed this check to simply check for null. Is there another scenario that needs to be tested here?

joaomarques736 → closed merge request !8

Hello freelock, thanks for your contribution. It is already merged in the branch 3.x, thanks!