Cannot export contacts excel file when no contact exist.

[hsiao19]

Cannot export contacts excel file when no contact exist.

Error message:

IndexError at /admin/newsletter/contact/export_excel/
list index out of range

Request Method: GET
Request URL: http://127.0.0.1:8000/admin/newsletter/contact/export_excel/
Django Version: 1.8.6
Exception Type: IndexError
Exception Value:
list index out of range
Exception Location: D:\intern\code\Iuno\TheophrastusDemo\virtualenv\Theophrastus\lib\site-packages\emencia\django\newsletter\utils\excel.py in init, line 21
Python Executable: D:\intern\code\Iuno\TheophrastusDemo\virtualenv\Theophrastus\Scripts\python.exe
Python Version: 2.7.10
Python Path:
['D:\intern\code\Mercurius\Projects\Newsletter\Nuwa',
'D:\intern\code\Mercurius\Projects\Newsletter\Nuwa',
'D:\intern\code\Iuno\TheophrastusDemo\virtualenv\Theophrastus\lib',
'D:\intern\code\Iuno\TheophrastusDemo\virtualenv\Theophrastus\Scripts',
'C:\Python27\Lib',
'C:\Python27\DLLs',
'C:\Python27\Lib\lib-tk',
'D:\intern\code\Iuno\TheophrastusDemo\virtualenv\Theophrastus',
'D:\intern\code\Iuno\TheophrastusDemo\virtualenv\Theophrastus\lib\site-packages',
'C:\windows\system32\python27.zip',
'D:\intern\code\Iuno\TheophrastusDemo\virtualenv\Theophrastus\DLLs',
'D:\intern\code\Iuno\TheophrastusDemo\virtualenv\Theophrastus\lib\plat-win',
'D:\intern\code\Iuno\TheophrastusDemo\virtualenv\Theophrastus\lib\lib-tk']
Server time: 星期三, 9 三月 2016 17:47:55 +0800

Traceback Switch to copy-and-paste view

D:\intern\code\Iuno\TheophrastusDemo\virtualenv\Theophrastus\lib\site-packages\django\core\handlers\base.py in get_response
response = wrapped_callback(request, _callback_args, *_callback_kwargs) ...
▶ Local vars
D:\intern\code\Iuno\TheophrastusDemo\virtualenv\Theophrastus\lib\site-packages\django\utils\decorators.py in _wrapped_view
response = view_func(request, _args, *_kwargs) ...
▶ Local vars
D:\intern\code\Iuno\TheophrastusDemo\virtualenv\Theophrastus\lib\site-packages\django\views\decorators\cache.py in _wrapped_view_func
response = view_func(request, _args, *_kwargs) ...
▶ Local vars
D:\intern\code\Iuno\TheophrastusDemo\virtualenv\Theophrastus\lib\site-packages\django\contrib\admin\sites.py in inner
return view(request, _args, *kwargs) ...
▶ Local vars
D:\intern\code\Iuno\TheophrastusDemo\virtualenv\Theophrastus\lib\site-packages\emencia\django\newsletter\admin\contact.py in exportation_excel
'contacts_edn%s' % datetime.now().strftime('%d-%m-%Y')) ...
▶ Local vars
D:\intern\code\Iuno\TheophrastusDemo\virtualenv\Theophrastus\lib\site-packages\emencia\django\newsletter\admin\contact.py in export_excel
return ExcelResponse(queryset, export_name) ...
▶ Local vars
D:\intern\code\Iuno\TheophrastusDemo\virtualenv\Theophrastus\lib\site-packages\emencia\django\newsletter\utils\excel.py in init
if isinstance(data[0], dict): ...
▶ Local vars