Merge pull request #44596 from fractaledmind/patch-1

Use #attribute_names in ActiveRecord::Core#inspect

activerecord/lib/active_record/core.rb

@@ -695,7 +695,7 @@ module ActiveRecord
       # We check defined?(@attributes) not to issue warnings if the object is
       # allocated but not initialized.
       inspection = if defined?(@attributes) && @attributes
-        self.class.attribute_names.filter_map do |name|
+        attribute_names.filter_map do |name|
           if _has_attribute?(name)
             "#{name}: #{attribute_for_inspect(name)}"
           end

activerecord/test/cases/core_test.rb

@@ -50,6 +50,11 @@ class CoreTest < ActiveRecord::TestCase
     assert_equal "NonExistentTable(Table doesn't exist)", NonExistentTable.inspect
   end
 
+  def test_inspect_relation_with_virtual_field
+    relation = Topic.limit(1).select("1 as virtual_field")
+    assert_match(/virtual_field: 1/, relation.inspect)
+  end
+
   def test_pretty_print_new
     topic = Topic.new
     actual = +""