毕设选题的设为公开

db/migrate/20190906111746_gtopic_bank_is_public.rb

@@ -0,0 +1,5 @@
+class GtopicBankIsPublic < ActiveRecord::Migration[5.2]
+  def change
+    GtopicBank.where(is_public: nil).update_all(is_public: 0)
+  end
+end