[#2930] added extra normalizations to ensure that newly created multiple fields has the correct zero-default for already inserted records

migrations/1689579878_renormalize_single_multiple_values.go

@@ -0,0 +1,15 @@
+package migrations
+
+import (
+	"github.com/pocketbase/dbx"
+)
+
+// Renormalizes old single and multiple values of MultiValuer fields (file, select, relation)
+// (see https://github.com/pocketbase/pocketbase/issues/2930).
+func init() {
+	AppMigrations.Register(func(db dbx.Builder) error {
+		return normalizeMultivaluerFields(db)
+	}, func(db dbx.Builder) error {
+		return nil
+	})
+}