This free course uses older versions of Laravel. It is provided as-is, without ongoing updates or individual support.
In this lesson we drive out our first validation rule for the concert form, and look at a useful trick for making assertions about redirect()->back() behavior.
In Laravel v5.5.19, the custom from helper we added in this lesson was added natively, so it's not necessary to add it yourself as long as you upgrade to the latest version of Laravel.