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-rw-r--r--activerecord/test/models/citation.rb5
1 files changed, 5 insertions, 0 deletions
diff --git a/activerecord/test/models/citation.rb b/activerecord/test/models/citation.rb
new file mode 100644
index 0000000000..3d786f27eb
--- /dev/null
+++ b/activerecord/test/models/citation.rb
@@ -0,0 +1,5 @@
+# frozen_string_literal: true
+
+class Citation < ActiveRecord::Base
+ belongs_to :reference_of, class_name: "Book", foreign_key: :book2_id
+end