Fix enum with alias_attribute

activerecord/lib/active_record/enum.rb

@@ -161,8 +161,9 @@ def enum(definitions)
         detect_enum_conflict!(name, name)
         detect_enum_conflict!(name, "#{name}=")
 
-        decorate_attribute_type(name, :enum) do |subtype|
-          EnumType.new(name, enum_values, subtype)
+        attr = attribute_alias?(name) ? attribute_alias(name) : name
+        decorate_attribute_type(attr, :enum) do |subtype|
+          EnumType.new(attr, enum_values, subtype)
         end
 
         _enum_methods_module.module_eval do
@@ -184,15 +185,15 @@ def enum(definitions)
 
             # def active?() status == 0 end
             klass.send(:detect_enum_conflict!, name, "#{value_method_name}?")
-            define_method("#{value_method_name}?") { self[name] == value.to_s }
+            define_method("#{value_method_name}?") { self[attr] == value.to_s }
 
             # def active!() update! status: :active end
             klass.send(:detect_enum_conflict!, name, "#{value_method_name}!")
-            define_method("#{value_method_name}!") { update! name => value }
+            define_method("#{value_method_name}!") { update!(attr => value) }
 
             # scope :active, -> { where status: 0 }
             klass.send(:detect_enum_conflict!, name, value_method_name, true)
-            klass.scope value_method_name, -> { where(name => value) }
+            klass.scope value_method_name, -> { where(attr => value) }
           end
         end
         defined_enums[name.to_s] = enum_values

activerecord/test/cases/enum_test.rb

@@ -393,6 +393,22 @@ def self.name; 'Book'; end
     assert book2.single?
   end
 
+  test "enum with alias_attribute" do
+    klass = Class.new(ActiveRecord::Base) do
+      self.table_name = "books"
+      alias_attribute :aliased_status, :status
+      enum aliased_status: [:proposed, :written, :published]
+    end
+
+    book = klass.proposed.create!
+    assert book.proposed?
+    assert_equal 'proposed', book.aliased_status
+
+    book = klass.find(book.id)
+    assert book.proposed?
+    assert_equal 'proposed', book.aliased_status
+  end
+
   test "query state by predicate with prefix" do
     assert @book.author_visibility_visible?
     assert_not @book.author_visibility_invisible?