reverses waypoint relation

db/migrations/1757689185_migrate_waypoint_trails.go

@@ -0,0 +1,34 @@
+package migrations
+
+import (
+	"github.com/pocketbase/dbx"
+	"github.com/pocketbase/pocketbase/core"
+	m "github.com/pocketbase/pocketbase/migrations"
+)
+
+func init() {
+	m.Register(func(app core.App) error {
+		wps, err := app.FindAllRecords("waypoints")
+		if err != nil {
+			return err
+		}
+
+		for _, wp := range wps {
+			trail, err := app.FindFirstRecordByFilter("trails", "waypoints ?~ {:id}", dbx.Params{"id": wp.Id})
+			if err != nil {
+				continue
+			}
+			wp.Set("trail", trail.Id)
+			err = app.UnsafeWithoutHooks().Save(wp)
+			if err != nil {
+				return err
+			}
+		}
+
+		return nil
+	}, func(app core.App) error {
+		// add down queries...
+
+		return nil
+	})
+}