fix delete function

dbHandler.go

@@ -218,39 +218,22 @@ func (dH *DBHandler) UpdateValuesByKey(model any, key string, value any) error {
 	return dH.db.Model(lookUpModel).Updates(model).Error
 }
 
-// deleteById
-//
-// Description:
-//
-//	Deletes records by their ID(s).
-//
-// Behavior:
-//   - If the first ID == 0, all records in the table are deleted.
-//   - Otherwise, deletes the provided IDs.
-//
-// Parameters:
-//   - model: Model struct type representing the table.
-//   - id:    Variadic list of IDs to delete.
-//
-// Returns:
-//   - error: Any deletion error.
 func (dH *DBHandler) DeleteById(model any, ids ...uint) error {
 	if len(ids) == 0 {
 		return fmt.Errorf("no IDs provided")
 	}
 
-	if ids[0] == 0 {
+	if len(ids) == 1 && ids[0] == 0 {
-		dH.logger.Debug("deleteById", "delete all")
+		dH.logger.Debug("deleteById", "delete ALL records!")
-		return dH.db.Where("1 = 1").Delete(model).Error
+		return dH.db.Session(&gorm.Session{AllowGlobalUpdate: true}).
+			Delete(model).Error
 	}
 
 	dH.logger.Debug("deleteById", "delete ids "+fmt.Sprint(ids))
 
-	// Always use Model() to avoid GORM’s “limit 1” safeguard
+	if err := dH.db.Delete(model, ids).Error; err != nil {
-	if err := dH.db.Model(model).Where("id IN ?", ids).Delete(nil).Error; err != nil {
 		return fmt.Errorf("delete failed: %w", err)
 	}
-
 	return nil
 }
 
@@ -282,53 +265,40 @@ func (dH *DBHandler) DeleteByKey(model any, key string, value any, LikeSearch bo
 	return dH.db.Where(key+" = ?", value).Delete(model).Error
 }
 
-// exists
+func (dH *DBHandler) Exists(model any, key string, value any, likeSearch bool) (found bool) {
-//
-// Description:
-//
-//	Checks whether a record exists matching the specified key/value filter.
-//
-// Behavior:
-//   - Performs a `First` query on the database.
-//   - If `LikeSearch` is true, performs a LIKE query.
-//   - Returns an error if the record does not exist or query fails.
-//
-// Parameters:
-//   - model:      Model struct type to search.
-//   - key:        Column name to filter by.
-//   - value:      Value to match.
-//   - LikeSearch: Whether to use wildcard search.
-//
-// Returns:
-//   - error: “no record found” or DB error.
-func (dH *DBHandler) Exists(model any, key string, value any, likeSearch bool) (err error) {
 	var query string
+	var args any
 
-	switch v := value.(type) {
+	// Detect LIKE and IN behavior
-	case []string, []int, []uint, []int64, []uint64, []float64:
+	val := reflect.ValueOf(value)
-		// Handle slice case — use IN clause
+	isSlice := val.Kind() == reflect.Slice
+
+	switch {
+	case isSlice:
+		if val.Len() == 0 {
+			dH.logger.Error("Exists", fmt.Sprintf("empty slice for %s", key))
+			return false
+		}
 		query = fmt.Sprintf("%s IN ?", key)
-	case string:
+		args = value
-		if likeSearch {
+
-			v = strings.ReplaceAll(v, "*", "%")
+	case likeSearch:
+		str := strings.ReplaceAll(fmt.Sprint(value), "*", "%")
 		query = fmt.Sprintf("%s LIKE ?", key)
-			value = v
+		args = str
-		} else {
+
-			query = fmt.Sprintf("%s = ?", key)
-		}
 	default:
-		// Handle any other single value (numbers, bools, etc.)
 		query = fmt.Sprintf("%s = ?", key)
+		args = value
 	}
 
-	dH.logger.Debug("exists", "check if exists key "+query+" value "+fmt.Sprint(value))
+	dH.logger.Debug("exists", "checking existence for key "+query+" value "+fmt.Sprint(args))
 
-	err = dH.db.Where(query, value).First(model).Error
+	tx := dH.db.Where(query, args).Find(model)
-	if errors.Is(err, gorm.ErrRecordNotFound) {
+
-		return fmt.Errorf("no record found for %s %v", key, value)
+	if tx.Error != nil {
-	} else if err != nil {
+		dH.logger.Error("Exists", fmt.Sprintf("query failed: %v", tx.Error))
-		return fmt.Errorf("query failed: %w", err)
+		return false
 	}
-
+	return tx.RowsAffected > 0
-	return nil
 }