Some problems with the tutorials

Hello there!

I have detected some problems with the videos, the main one is that the video for Before Filters is not loading. It may be just for me, but all the other videos were loading.

The rest of the problems have to do with some errors in the content. There are minor problems in the instructions of the Ruby project, I wasn't keeping track of them, but there are some major problems that can be difficult to solve:

• Validating Uniqueness: The problem (~2:10) is not that the other fields are empty, the assertion is that the errors array for profile_name should not be empty and it is. That's why it's failing on line 26. The rest of the video is fixing a problem that it's not really relevant.
• Fixtures: The error at ~1:30 is because the fixture is using the fields "password" and "password_confirmation" when it should be using "encrypted_password" or no field at all for password. You can even see the error message "table users has no column named password" on the video. It doesn't say it's on line 32 and, in fact, there are 4 errors, one for each test. People can get stuck here because this problem is never solved. Adding uniqueness would only make sense if you actually pass the test with the same profile_name as another registered user and the screen with no errors after adding uniqueness is not what you get when you do it on your own.
• Validating format: The regex is wrong, it should be something like /\A[a-zA-Z0-9-_]+\Z/. The format test obviously fails, but only because with the regex used you can only have 1 character profile_names. At the end of the video, even though the profile_name is well formatted, one of the error messages is that it is not well formatted.

And I cannot remember any other problems I encountered.

Hope this helps.