DRY Up the Authorization

[calebthewood]

This will be more advanced.
In many routes, there are a few lines that check for is-a-user-logged-in. You could solve this by writing your own “decorator”, like “@app.route”, but that checks if the g.user object is not null and, if not, flashes and redirects.

You’ll need to do some searching and reading about Python decorators to do this.