fix: ignore rank column in migrations

migrations/20221016_drop_rank_column.go

@@ -0,0 +1,35 @@
+package migrations
+
+import (
+	"github.com/emvi/logbuch"
+	"github.com/muety/wakapi/config"
+	"github.com/muety/wakapi/models"
+	"gorm.io/gorm"
+)
+
+func init() {
+	const name = "20221016-drop_rank_column"
+	f := migrationFunc{
+		name: name,
+		f: func(db *gorm.DB, cfg *config.Config) error {
+			if hasRun(name, db) {
+				return nil
+			}
+
+			migrator := db.Migrator()
+
+			if migrator.HasTable(&models.LeaderboardItem{}) && migrator.HasColumn(&models.LeaderboardItem{}, "rank") {
+				logbuch.Info("running migration '%s'", name)
+
+				if err := migrator.DropColumn(&models.LeaderboardItem{}, "rank"); err != nil {
+					logbuch.Warn("failed to drop 'rank' column (%v)", err)
+				}
+			}
+
+			setHasRun(name, db)
+			return nil
+		},
+	}
+
+	registerPostMigration(f)
+}

models/leaderboard.go

@@ -11,7 +11,7 @@ type LeaderboardItem struct {
 	ID        uint          `json:"-" gorm:"primary_key; size:32"`
 	User      *User         `json:"-" gorm:"not null; constraint:OnUpdate:CASCADE,OnDelete:CASCADE"`
 	UserID    string        `json:"user_id" gorm:"not null; index:idx_leaderboard_user"`
-	Rank      uint          `json:"rank" gorm:"->"`
+	Rank      uint          `json:"rank" gorm:"-:migration"`
 	Interval  string        `json:"interval" gorm:"not null; size:32; index:idx_leaderboard_combined"`
 	By        *uint8        `json:"aggregated_by" gorm:"index:idx_leaderboard_combined"` // pointer because nullable
 	Total     time.Duration `json:"total" gorm:"not null" swaggertype:"primitive,integer"`