The h1 at the top uses "@song.name", but songs aren't set up that way in the db. Should be "@song.title". It doesn't affect the tests, so it's not noticeable unless you actually try to visit the edit path through a browser.

The ul inside point 2 rendered right on github, but in the lesson on Learn, the number sequence continued through the inset list as a numbered list.

With the current solution code, when you create a new song without inserting an Artist name in the form, the Song is persisted to the database with a new artist that is a blank string "". The solution code for the Artist helper method (below), only checks if the song.artist is valid, not if it is a blank string.
module ArtistsHelper def display_artist(song) if song.artist link_to song.artist.name, song.artist else link_to 'Add Artist', edit_song_path(song) end end end

This leads to user errors when testing in the server. After creating this new song without an artist, the next page (song show) will not display the expected "Add Artist" link because the instance of the song does have an artist attribute of "" . This also leads to similar errors in the index page.

I believe that the solution helper method should be changed to the following to accommodate the fix.

module ArtistsHelper
def display_artist(song)
#binding.pry
if song.artist && song.artist.name != ""#is valid
link_to song.artist.name, artist_path(song.artist)
else #if nil
link_to "Add Artist", edit_song_path(song)
end
end
end

The test will not run without require 'rails_helper' at the top. A student kept getting an uninitialized constant error for those test. We added require 'rails_helper' to the top of the test and the test works now.

Ruby 2.6.1 creates errors when running with Rails 4.2.x.
Students using 2.6.1 are getting errors when running learn.

Solution: upgrade Gemfile to a rails version > 5.0, ie
gem 'rails', '5.0.7.1'

Note that bundler has to be > 2.0.x with rails > 5.0

Edit: Removing the version entirely should work as well

This lab takes so long to build that it times out and disconnects from the remote server.