_createHere

*Deprecated -- Create a new Thing as part of displaying this expression* -- Function

MODEL -> LINK PROPERTY._createHere -> THING

This allows you to create a new Thing, right here on the page, as part of displaying. It is useful to put inside of a _QLButton, so that you can create something and edit it, on the press of a button, without changing pages.

Warning: this function is a little suspicious in how it works. It might get replaced by some other approach in the future, so don't get too attached to it. At this point, it is gently deprecated in favor of _createThing(); please start to use that instead.

(Technically speaking, the problem is that this function is impure -- it has major side-effects. It is just about the only impure function in Querki, and we may want to find a purer way to get the same result.)