Django 1.10.1 'my_templatetag' is not a registered tag library. Must be one of:

Question

I want a menu thats custom depending which group you are member of. Im using Django 1.10.1, allauth and so on. When im trying to make my templatetag it fails and it says:¨

TemplateSyntaxError at /
'my_templatetag' is not a registered tag library. Must be one of:
account
account_tags
admin_list
admin_modify
admin_static
admin_urls
cache
i18n
l10n
log
socialaccount
socialaccount_tags
static
staticfiles
tz

'my_templatetag.py' looks like this:

from django import template
from django.contrib.auth.models import Group


register = template.Library()

@register.filter(name='has_group')
def has_group(user, group_name):
    group =  Group.objects.get(name=group_name)
    return group in user.groups.all()

and tha error comes in my .html file which say,

{%  load my_templatetag %}

I have tried to restart the server like millions of times, also i tried to change all the names, and the app is a part of INSTALLED_APPS in settings.py. What am I doing wrong?

Answer 1

Besides putting my_templatetag.py inside app_name/templatetags, make sure you restart the Django development server (or ensure it restarted itself) every time you modify template tags. If the server does not restart, Django won't register the tags.

Answer 2

From django 1.9, you can load those new tags/filters in settings like this:

TEMPLATES = [
{
    'BACKEND': 'django.template.backends.django.DjangoTemplates',
    'DIRS': [],
    'APP_DIRS': True,
    'OPTIONS': {
        'context_processors': [
            'django.template.context_processors.debug',
            'django.template.context_processors.request',
            'django.contrib.auth.context_processors.auth',
            'django.contrib.messages.context_processors.messages',
            'app.apptemplates.load_setting',

        ],

        'libraries':{
            'my_templatetag': 'app.templatetags.my_templatetag',

            }
    },
},

]

Answer 3

Make sure you are not missing any of the following steps:

1. Create a folder called "templatetags" at the same level as models.py and views.py in your application folder

2. Your application must be in the INSTALLED_APPS in settings.py

3. The templatetags folder must have __init__.py

4. Restart the django server

Answer 4

Restart the django server. It worked for me after setting the templatetag folder within the app and template_name.py in the templatetag folder.

Answer 5

Where is 'my_templatetag.py' stored? It should be stored in a directory called 'templatetags' which is within the app.

Please see: https://docs.djangoproject.com/en/dev/howto/custom-template-tags/ if that isn't the case.

Answer 6

I know this is a bit old, but I ran into the same problem today. I found the solution in the docs: https://docs.djangoproject.com/en/dev/howto/custom-template-tags/

The app should contain a templatetags directory, at the same level as models.py, views.py, etc. If this doesn’t already exist, create it - don’t forget the __init__.py file to ensure the directory is treated as a Python package.

Simply copying the __init__.py from another location into the new templatetag's directory sorted it out.

Answer 7

In my case the problem was, I was using {% load filter_method_name %}

I had to change to {% load filename %}

I then had to restart the server.

Answer 8

put my_templatetag.py inside app_name/templatetags then create init.py inside app_name/templatetags .. Then open terminal in project folder give command python manage.py shell

from app_name.templatetags import my_templatetag

Answer 9

you just cut/remove your code which written inside the (example templatetags/home.py) from home.py you remove your code and restart your server and again paste your code in home.py it will work.

Answer 10

I am using Django 1.11, and I was having the same problem. Some of the answers here are right, but some things may be missing. Here is what I did:

Quoting a previous user:

Create a folder called "templatetags" at the same level as models.py and views.py in your application folder

Your application must be in the INSTALLED_APPS in settings.py

The templatetags folder must have init.py

But, before you re-start the Django server, add this to the file that contains the tags:

from django import template
register = template.Library()

Then you can re-start the server.