实现数据库级联删除

db.go

@@ -31,6 +31,12 @@ func InitDB(dbPath string) error {
 		return fmt.Errorf("failed to open database: %v", err)
 	}
 
+	// Enable foreign key support in SQLite
+	_, err = DB.Exec("PRAGMA foreign_keys = ON")
+	if err != nil {
+		return fmt.Errorf("failed to enable foreign keys: %v", err)
+	}
+
 	if err = DB.Ping(); err != nil {
 		return fmt.Errorf("failed to ping database: %v", err)
 	}