WARDEN_INVALID_TOKEN_MESSAGE not being rendered when token is invalid and Doorkeeper strategy fails

[pjmartorell]

There is a bug in:

devise-doorkeeper/lib/devise/strategies/doorkeeper.rb

Lines 51 to 54 in 900cbb1

	def invalid_token
	fail!(WARDEN_INVALID_TOKEN_MESSAGE)
	throw :warden
	end

Just as a record, warden < 1.2.8 does NOT set the winning_strategy when :warden is thrown. As a consequence, warden_message in DoorkeeperFailureApp is always empty:

devise-doorkeeper/lib/devise/doorkeeper/doorkeeper_failure_app.rb

Lines 16 to 18 in 900cbb1

	def oauth_error?
	warden_message == Devise::Strategies::Doorkeeper::WARDEN_INVALID_TOKEN_MESSAGE
	end

This issue in warden was solved in master in this PR: wardencommunity/warden#175
Dependencies should be updated as soon as there is a new release of warden in order to fix this issue. For now you can manually install warden in your Gemfile pointing to master or any revision after the fix above.