Django __str__ returned non-string (type NoneType)
you can try:
django
How to query as GROUP BY in django?
If you mean to do aggregation you can use the aggregation features of the ORM: This results in a query similar to and the output would be of the form If you don’t include the order_by(), you may get incorrect results if the default sorting is not what you expect. If you want to include … Read more
coercing to Unicode: need string or buffer, NoneType found when rendering in django admin
This error happens when you have a __unicode__ method that is a returning a field that is not entered. Any blank field is None and Python cannot convert None, so you get the error. In your case, the problem most likely is with the PCE model’s __unicode__ method, specifically the field its returning. You can … Read more
Getting stuck at Django error: No module named registration
I installed the registration module, added it to settings.py. When I tried to run syncdb (% python sitename/manage.py syncdb –settings sitename.devsettings) It gave me “Error: No module named registration” The same setup works (using the same files for everything) fine on the server. This happens on my local machine running OS X. I checked the … Read more
coercing to Unicode: need string or buffer, NoneType found when rendering in django admin
his error happens when you have a __unicode__ method that is a returning a field that is not entered. Any blank field is None and Python cannot convert None, so you get the error. In your case, the problem most likely is with the PCE model’s __unicode__ method, specifically the field its returning. You can … Read more
gunicorn.errors.HaltServer: django
Actually the problem here was the wsgi file itself, previously before django 1.3 the wsgi file was named with an extension of .wsgi, but now in the recent versions it will be created with and extension of .py that is the wsgi file must be a python module so the file should be hello_wsgi.py and … Read more
CSV new-line character seen in unquoted field error
It’ll be good to see the csv file itself, but this might work for you, give it a try, replace: with: Or, open a file with universal newline mode and pass it to csv.reader, like: Or, use splitlines(), like this:
The view didn’t return an HttpResponse object. It returned None instead
Because the view must return render, not just call it. Change the last line to
How to check if a user is logged in (how to properly use user.is_authenticated)?
Update for Django 1.10+: is_authenticated is now an attribute in Django 1.10. The method was removed in Django 2.0. For Django 1.9 and older: is_authenticated is a function. You should call it like As Peter Rowell pointed out, what may be tripping you up is that in the default Django template language, you don’t tack … Read more
Output Django queryset as JSON
I want to serialize my queryset, and I want it in a format as this view outputs: I simply don’t know how to output the queryset instead of the manual data in the example. I’ve tried and but it wont work. What am I doing wrong? Do I need to make a custom JSON Encoder?