You are trying to add a non-nullable field ‘new_field’ to userprofile without a default
You need to provide a default value:
django
NumPy array is not JSON serializable
I regularly “jsonify” np.arrays. Try using the “.tolist()” method on the arrays first, like this: In order to “unjsonify” the array use:
Implementing a SOA in Django using celery
A message queue (such as rabbitmq brokered by celery) is a perfectly fine way to handle communication between SOA components. Additionally, if you need real-time communication without sharing databases between services, REST is basically made for this. There are several options for implementing REST services on top of Django, with Tastypie and Django-Rest-Framework being popular … Read more
In Django, how do I know the currently logged-in user?
Where do you need to know the user? In views the user is provided in the request as request.user. For user-handling in templates see here If you want to save the creator or editor of a model’s instance you can do something like: model.py admin.py I found this on the Internet, but I don’t know where anymore
Error: “dictionary update sequence element #0 has length 1; 2 is required” on Django 1.4
I have an error message on Django 1.4: It happened when I tried using a template tag like: {% for v in values %}: It happens too when I try to access on a hstore queryset: The code is: I’m just trying to access the value. I don’t understand the “update sequence” message. When I … Read more
Django – “no module named django.core.management”
It sounds like you do not have django installed. You should check the directory produced by this command: To see if you have the django packages in there. If there’s no django folder inside of site-packages, then you do not have django installed (at least for that version of python). It is possible you have … Read more
Django: no such table: django_session
It could be that the server uses a different working directory than the manage.py command. Since you provide a relative path to the sqlite database, it is created in the working directory. Try it with an absolute path, e.g.: Remember that you have to either run ./manage.py syncdb again or copy your current database with the existing tables to /tmp. … Read more
Is there a list of Pytz Timezones?
You can list all the available timezones with pytz.all_timezones: There is also pytz.common_timezones:
Print type of variable in python3.5 on django 1.8
print in Python 3 is no longer a statement, but a function. You need to call it using parentheses:
Django – no such table exception
I solved the same problem with these steps : Delete your database (db.sqlite3 in my case) in your project directory Remove everything from __pycache__ folder under your project subdirectory For the application you are trying to fix, go to the folder and clear migrations and __pycache__ directories When you are sure you have cleared all the above files, run: I hope this … Read more