scopes field accepts Array

NEWS.md

@@ -8,6 +8,7 @@ User-visible changes worth mentioning.
 ## master
 
 - [#1215] Fix deprecates for Rails 6.
+- [#1214] Scopes field accepts array.
 - [#1209] Fix tokens validation for Token Introspection request.
 - [#1202] Use correct HTTP status codes for error responses.
 

lib/doorkeeper/models/concerns/scopes.rb

@@ -7,6 +7,10 @@ def scopes
         OAuth::Scopes.from_string(scopes_string)
       end
 
+      def scopes=(value)
+        super Array(value).join(' ')
+      end
+
       def scopes_string
         self[:scopes]
       end

spec/lib/models/scopes_spec.rb

@@ -2,7 +2,7 @@
 
 describe 'Doorkeeper::Models::Scopes' do
   subject do
-    Class.new(Hash) do
+    Class.new(Struct.new(:scopes)) do
       include Doorkeeper::Models::Scopes
     end.new
   end
@@ -21,6 +21,18 @@
     end
   end
 
+  describe :scopes= do
+    it 'accepts String' do
+      subject.scopes = 'private admin'
+      expect(subject.scopes_string).to eq('private admin')
+    end
+
+    it 'accepts Array' do
+      subject.scopes = %w[private admin]
+      expect(subject.scopes_string).to eq('private admin')
+    end
+  end
+
   describe :scopes_string do
     it 'is a `Scopes` class' do
       expect(subject.scopes_string).to eq('public admin')