laravel/laravel — pull request #622 by sparksp (2012-05-04 11:44:11+00:00)
Title: Fix View's use of Events so you can actually implement your own things

I've just tried to make use of the View events and ran into a few problems; here's how/why I fixed it:

1. Using `Event::first` returns the response of the first event, often `null`. So instead use `Event::until` to get the first non-null response.
2. If none of the events return a value then `Event::until` returns `$responses` (an empty array) - `null` makes more sense.
3. Get Blade to return `null` instead of `false` if it can't handle the file, since Event watches for `null`, and `null` is what you get with no return too. And updated View to check for `null` too.