Fix database error: Data truncated for column 'stabilitas'

backend/database.py

@@ -208,6 +208,16 @@ def save_all_model_results(all_results: dict, best_meta: dict, komoditas_id: int
         # Insert each model result
         for model_name, metrics in all_results.items():
             is_best = 1 if model_name == best_name or f"{model_name}_Tuned" == best_name else 0
+            
+            # Hitung stabilitas sederhana untuk kolom ENUM agar tidak error
+            mape_val = metrics.get('mape', 0)
+            stabilitas_label = (
+                'optimal' if mape_val < 2 else 
+                'baik' if mape_val < 5 else 
+                'cukup' if mape_val < 10 else 
+                'perlu_retrain'
+            )
+
             conn.execute(text("""
                 INSERT INTO model_ml (
                     komoditas_id, nama_model, versi, deskripsi, file_path,
@@ -218,17 +228,18 @@ def save_all_model_results(all_results: dict, best_meta: dict, komoditas_id: int
                 ) VALUES (
                     :komoditas_id, :nama_model, '1.0', :deskripsi, '',
                     :mape, :rmse, :mae, :r2_score, 0,
-                    '', 'otomatis', '',
+                    :stabilitas, 'otomatis', '',
                     CURDATE(), CURDATE(), :is_active, NOW(), NOW()
                 )
             """), {
                 'komoditas_id': komoditas_id,
                 'nama_model': model_name,
                 'deskripsi': f"Model {model_name} untuk komoditas ID {komoditas_id}",
-                'mape': round(metrics.get('mape', 0), 4),
+                'mape': round(mape_val, 4),
                 'rmse': round(metrics.get('rmse', 0), 4),
                 'mae': round(metrics.get('mae', 0), 4),
                 'r2_score': round(metrics.get('r2', 0), 4),
+                'stabilitas': stabilitas_label,
                 'is_active': is_best,
             })