undefined method `each' for nil:NilClass

[OwenRay]

The application throws an exception when trying the example command:

$ ./bin/spotify-export.rb spec/support/multiple-tracks.txt

/Users/owenray/spotify-export/lib/spotify-track.rb:49:in `format_artists': undefined method `each' for nil:NilClass (NoMethodError)
	from /Users/owenray/spotify-export/lib/spotify-track.rb:82:in `get_track_attributes'
	from /Users/owenray/spotify-export/lib/spotify-track.rb:32:in `attributes'
	from /Users/owenray/spotify-export/lib/spotify-track.rb:22:in `name'
	from bin/spotify-export.rb:23:in `block in <main>'
	from bin/spotify-export.rb:20:in `each'
	from bin/spotify-export.rb:20:in `each_with_index'
	from bin/spotify-export.rb:20:in `<main>'

Running on macOS Sierra 10.12.5
ruby 2.4.0p0 (2016-12-24 revision 57164) [x86_64-darwin16]

[OwenRay]

just noticed this gets resolved by #14

[xaviarias]

I have the same issue here, but In my case #14 does not solve the problem, it causes infinite recursion. The problem seems that artists parameter is null, not a typo.

[fredericoabraham]

I'm getting it here too. git reset'ed (9/17/2017). Anyone found a solution for this? Thanks

[BachirC]

The problem is that the API call to Spotify in lib/spotify-track.rb is returning a 401 because no token is passed with the request. As stated by the API used in this gem, https://developer.spotify.com/web-api/get-track/ you will need to implement an Authorization workflow (https://developer.spotify.com/web-api/authorization-guide/) to generate a user token that will be passed in the requests to Spotify.

[BachirC]

How I made it work :

• Create a spotify app at https://developer.spotify.com/my-applications/#!/applications/create

• Use the Client Credential workflow to get an api token from Spotify https://developer.spotify.com/web-api/authorization-guide/#client-credentials-flow

For this part, you will need to Base64 encode the string client_id:client_secret of your Spotify app. I used this https://www.base64encode.org/.
Also, beware to pass the grant_type params in the body and not as an URL-encoded param otherwise you will get a 400.

• You get the access_token (expires in 1 hour) in the response. I added two lines to the code (last ones) :

lib/spotify-track.rb

  def get_track_attributes
    if local
      local_array = uri.split(':')

      # The array should be length 6
      # ["spotify", "local", "artist", "album", "song title", "duration"]
      name   = URI.decode(local_array[4].gsub('+', ' '))
      album  = URI.decode(local_array[3].gsub('+', ' '))
      artist = URI.decode(local_array[2].gsub('+', ' '))
    else
      track_id = uri[/track(:|\/)(.+)/, 2]
      target  = URI.parse("https://api.spotify.com/v1/tracks/#{ track_id }")
      http    = Net::HTTP.new(target.host, target.port)
      http.use_ssl = true
      request = Net::HTTP::Get.new(target.request_uri)
      access_token = "Zwejkrhqwlkrq..."
      request['Authorization'] = "Bearer #{access_token}"

If I have some time, I'll do a PR to allow a user to pass the access token directly in the args when launching the script (the access token generation will be done manually as I explained above). It is not optimal as the token will stay in your bash history but for now it'll do and I'm sure we'll come up with a better solution.
Hope this helps.

⚠️ Don't commit or share your Spotify token.

[fredericoabraham]

Hi. Still trying to make this work. Does the token look something like this after base 64 encode? (I messed with it so it's wrong):

  access_token = "YTU5YTc3AmVmADk4NDI2M2E2MGU2ZTU4NGFiYWYyM2Y="

Thanks.

[BachirC]

Looks like it, yes. Did you try it out ?

[BachirC]

Ok wait didn't read well. It's not the token that should be base64 encoded, it is the string client_id:client_secret.

Checkout the second link I posted in my workflow, it is well explained.

[glfaulkner]

Still throwing me the same exception, even with adding the access token (which I obtained with curl passing the base64 string) to spotify-track.rb. When encoding the client id and secret to base64, does the string need to follow the exact 'client_id:client_secret" format, with the colon in the middle?

Thanks.

[regisbsb]

It works, cheers!

[BachirC]

@glfaulkner Yes it does.

[fredericoabraham]

Hello all. I've been trying to use spotify-export again, but haven't been able to log in to the developer site. Wanted to know if you guys could: https://developer.spotify.com/ <https://developer.spotify.com/web-api/get-track/> I try to log in, when clicking on dashboard shows the same as before, as if I wasn't logged in. Thanks, -- Fred

…

On Sat, Oct 13, 2018 at 11:10 AM Bachir ***@***.***> wrote: @glfaulkner <https://github.com/glfaulkner> Yes it does. — You are receiving this because you commented. Reply to this email directly, view it on GitHub <#17 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/ABLxdlRlJvF9utS2w5F1btQKn_Be9OP3ks5ukfQ5gaJpZM4ONXwC> .

-- -- Fred

[OwenRay]

@snakenerd works for me, I'm logging in with username & password if that helps.