Redmine 3.4.4

db/migrate/022_serialize_possibles_values.rb

@@ -0,0 +1,13 @@
+class SerializePossiblesValues < ActiveRecord::Migration
+  def self.up
+    CustomField.all.each do |field|
+      if field.possible_values and field.possible_values.is_a? String
+        field.possible_values = field.possible_values.split('|')
+        field.save
+      end
+    end
+  end
+
+  def self.down
+  end
+end