I am implementing csv donwloand function referring to this page.
Even though I don't get any error message, cannot get csv file downloaded.
Does anyone know what is the problem for this implementation?
Below is the code to download csv file from database.
class timeCSVexport(View):
def get(self,request,pk,keyword):
key=keyword.replace("_"," ")
queryset=timeseries.objects.filter(html__pk=pk).filter(keyword=key)
bio = BytesIO()
data=json.loads(list(queryset)[0].df)
df=pd.DataFrame.from_dict(data,orient='index').T
df.index=pd.to_datetime(df.index)
df1=df.sort_index()
sheet=key[:31] if len(key)>31 else key
print (sheet)
writer=pd.ExcelWriter(bio,engine='xlsxwriter')
df1.to_excel(writer,sheet_name=sheet)
writer.save()
bio.seek(0)
workbook=bio.getvalue()
response = StreamingHttpResponse(workbook,content_type='application/vnd.openxmlformats-officedocument.spreadsheetml.sheet')
response['Content-Disposition'] = 'attachment; filename=%s' % pk
return response
