feat: export chart data excel

Author: ulleo

backend/apps/chat/api/chat.py

@@ -206,12 +206,9 @@ async def export_excel(excel_data: ExcelData):
         _fields_list.append(field.name)
     df = pd.DataFrame(np.array(data), columns=_fields_list)
 
-    file_name = f"{excel_data.name}-{datetime.datetime.now().strftime('%Y-%m-%d_%H-%M-%S')}_{hashlib.sha256(uuid.uuid4().bytes).hexdigest()[:10]}.xlsx"
-
-    file_path = f'{(settings.EXCEL_PATH if settings.EXCEL_PATH[-1] == "/" else (settings.EXCEL_PATH + "/"))}{file_name}'
-
     buffer = io.BytesIO()
     df.to_excel(buffer, index=False)
     buffer.seek(0)
 
-    return StreamingResponse(io.BytesIO(buffer.getvalue()))
+    return StreamingResponse(io.BytesIO(buffer.getvalue()),
+                             media_type="application/vnd.openxmlformats-officedocument.spreadsheetml.sheet")

frontend/src/api/chat.ts

@@ -329,5 +329,5 @@ export const chatApi = {
     return request.fetchStream(`/chat/recommend_questions/${record_id}`, {}, controller)
   },
   checkLLMModel: () => request.get('/system/aimodel/default', { requestOptions: { silent: true } }),
-  export2Excel: (data: any) => request.post('/chat/excel/export', data),
+  export2Excel: (data: any) => request.post('/chat/excel/export', data, { responseType: 'blob' }),
 }

frontend/src/views/chat/chat-block/ChartBlock.vue

@@ -232,7 +232,9 @@ function exportToExcel() {
   chatApi
     .export2Excel({ ...chartRef.value?.getExcelData(), name: chartObject.value.title })
     .then((res) => {
-      const blob = new Blob([res.data])
+      const blob = new Blob([res], {
+        type: 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet',
+      })
       const link = document.createElement('a')
       link.href = URL.createObjectURL(blob)
       link.download = `${chartObject.value.title ?? 'Excel'}.xlsx`