It says there: "add the index action to display a list of all tags. To do this, fetch all tags from the database and store them in variable @tags."
So it has to be in that file 'routes.rb' as well.
Possibly I have to map something, just like we have done it before with 'tags'? Or add something to the 'index' method. I have completed the complete Ruby course but Ruby on rails seems to be quite different. Have to get used to it. Here's the code. Can someone help and give me a hint please? Thanks!
get '/tags' => 'tags#index'
@tags = Tag.all