Category: Python Answers

Sometimes, we want to fix 404 error with accessing static files with Python Django.

In this article, we’ll look at how to fix 404 error with accessing static files with Python Django.

How to fix 404 error with accessing static files with Python Django?

To fix 404 error with accessing static files with Python Django, we can add our static file folder to STATICFILES_DIRS in settings.py.

For instance, we write

import os.path

STATIC_ROOT = ''

STATIC_URL = '/static/'

STATICFILES_DIRS = ( os.path.join('static'), )

to set STATICFILES_DIRS to a tuple with the static file path in our project.

Conclusion

To fix 404 error with accessing static files with Python Django, we can add our static file folder to STATICFILES_DIRS in settings.py.

Sometimes, we want to add a user to a group in Python Django.

In this article, we’ll look at how to add a user to a group in Python Django.

How to add a user to a group in Python Django?

To add a user to a group in Python Django, we can use the add method.

For instance, we write

from django.contrib.auth.models import Group

my_group = Group.objects.get(name='my_group_name') 
my_group.user_set.add(your_user)

to get the group with the given name with Group.objects.get.

And then we call user_set.add on the returned group with the user to add the user to the group.

Conclusion

To add a user to a group in Python Django, we can use the add method.

Sometimes, we want to receive JSON data using HTTP POST request in Python Django.

In this article, we’ll look at how to receive JSON data using HTTP POST request in Python Django.

How to receive JSON data using HTTP POST request in Python Django?

To receive JSON data using HTTP POST request in Python Django, we can use the request.body property in our view.

For instance, we write

received_json_data=json.loads(request.body)

to call json.oads with request.body to parse the JSON request body into a dictionary.

Conclusion

To receive JSON data using HTTP POST request in Python Django, we can use the request.body property in our view.

Sometimes, we want to select only rows with duplicate field values with Python Django.

In this article, we’ll look at how to select only rows with duplicate field values with Python Django.

How to select only rows with duplicate field values with Python Django?

To select only rows with duplicate field values with Python Django, we can use the filter method.

For instance, we write

from django.db.models import Count

Literal.objects.values('name')
               .annotate(Count('id')) 
               .order_by()
               .filter(id__count__gt=1)

to call annotate with Count('id') to aggregate the rows with the same id value.

And then we call filter with the id__count__gt set to 1 to get the aggregate rows with the id count larger than 1.

Conclusion

To select only rows with duplicate field values with Python Django, we can use the filter method.

Sometimes, we want to add a page redirect with Python Django.

In this article, we’ll look at how to add a page redirect with Python Django.

How to add a page redirect with Python Django?

To add a page redirect with Python Django, we can add a RedirectView.

For instance, we write

from django.views.generic import RedirectView

urlpatterns = patterns('',
    (r'^one/$', RedirectView.as_view(url='/another/')),
)

to create a RedirectView by calling RedirectView.as_view with the url argument set to the URL we want to redirect to.

Conclusion

To add a page redirect with Python Django, we can add a RedirectView.