fix model validate

backend/server.js

@@ -4426,6 +4426,10 @@ app.post('/api/assets', requireAssetOrAdmin, async (req, res) => {
             return res.status(400).json({ success: false, message: 'Asset name is required' });
         }
 
+        if (!payload.model) {
+            return res.status(400).json({ success: false, message: 'Model is required' });
+        }
+
         if (!payload.assetCode) {
             payload.assetCode = await generateUniqueManualAssetCode(payload);
         }
@@ -4490,6 +4494,10 @@ app.put('/api/assets/:id', requireAssetOrAdmin, async (req, res) => {
             return res.status(400).json({ success: false, message: 'Asset code and asset name are required' });
         }
 
+        if (!payload.model) {
+            return res.status(400).json({ success: false, message: 'Model is required' });
+        }
+
         await ensureDepartmentExists(payload.department);
 
         await pool.request()
@@ -4608,6 +4616,8 @@ app.post('/api/assets/import', requireAssetOrAdmin, upload.single('file'), async
     const normalizedRows = incomingRows
         .map((row, rowIndex) => {
             const normalized = normalizeAssetPayload(row);
+            const rowSourceStt = parseAssetImportSttNumber(row?.sourceStt);
+            normalized.__importRowLabel = rowSourceStt !== null ? `STT ${rowSourceStt}` : `dong ${rowIndex + 1}`;
             const hasOriginalAssetCode = String(normalized.assetCode || '').trim() !== '';
             if (!hasOriginalAssetCode && normalized.assetName) {
                 normalized.assetCode = generateImportAssetCodeFromRow(normalized, rowIndex + 1);
@@ -4619,7 +4629,20 @@ app.post('/api/assets/import', requireAssetOrAdmin, upload.single('file'), async
         .filter(row => isMeaningfulImportedAssetRow(row));
 
     if (!normalizedRows.length) {
-        return res.status(400).json({ success: false, message: 'No valid rows found. Asset name or model is required.' });
+        return res.status(400).json({ success: false, message: 'No valid rows found. MODEL is required.' });
+    }
+
+    const missingModelRows = normalizedRows
+        .filter(row => !String(row.model || '').trim())
+        .map(row => row.__importRowLabel)
+        .filter(Boolean);
+    if (missingModelRows.length) {
+        const limitedRows = missingModelRows.slice(0, 20);
+        const suffix = missingModelRows.length > limitedRows.length ? ', ...' : '';
+        return res.status(400).json({
+            success: false,
+            message: `Cot MODEL la bat buoc. Thieu du lieu tai: ${limitedRows.join(', ')}${suffix}`
+        });
     }
 
     const transaction = new sql.Transaction(pool);