[Django]-Django: 'current_tags' is not a valid tag library

I had this problem and fixed it by adding a blank __init__.py file in my appname/templatetags/ directory.

Possibilities are many:

1. You haven’t reset your dev server.
2. You have dependency loop in templatetag file.
3. You misspelled something (directory, folder, template name in ‘load’, etc.).
4. You forgot about adding the app to INSTALLED_APPS.

Restart the server has solved the issue for me. They must have mentioned it in the documentation.

I was getting the same error but for a different reason so I’ll tell you (in case someone else comes the same problem).

I had everything right but I had my custom tag inside a folder named template_tags and after a long search I found out that it had to be templatetags, and now it works. So check the folder name is exactly templatetags.

suppose you have the following structure:

— Application_Name

——-templatetags

————–init.py

————–templates_extras.py

——-init.py

——-settings.py

— manage.py

You have to make sure of the following:

• your application itself inside which your “templatetags” is resident is actually installed in INSTALLED_APPS in settings.py (e.g. “Application_Name”)

• your tag module itself that exists inside “templatetags” is already installed in INSTALLED_APP in settings.py (e.g. “ApplicationName.templatetags.tempaltes_extras”)

• keep sure you have “init.py” under templatetags directory

• you have to restart the server

• In some cases you have to remove all generated *.pyc if it did not work then retry again

“custom tags” is not a valid tag library error, more often is occurred because the custom tags are not loaded into the app.

place an empty init.py inside the same folder where your “custom template tag” is placed and run the below code on the terminal to load the custom template tags

touch __init__.py

For others facing this . Suppose your App name is MyApp and your tag folder name is templatetags then in settings.py you should have :

INSTALLED_APPS = [
'MyApp',
'MyApp.templatetags'
]

Both your django app and your tag folder which is under your app package are needed there.

-> MyApp
    ---> models.py
    ---> views.py
    ---> templatetags
      -----> __init__.py
      -----> app_filters.py

And in your template file :

{% load app_filters %}

Also app_filters.py be like :

# coding=utf-8
from django import template

register = template.Library()


@register.filter(name='get_item')
def get_item(dictionary, key):
    return dictionary.get(key)

check all above steps and you may find the issue.

Please ensure your templatetags folder is initialized with python, if you are in doubt, just take bakup of all files,

Remove all files,
Inside templatetags folder create init.py file only,
then restart your server,

Now your folder is under Python, then do your stuff.

This works for me…

For me, it was the mistake of putting quotes around the library name in load tag.

WRONG: {% load 'library_name' %}

CORRECT: {% load library_name %}

Refer to other answers too. I solved a couple of those problems too before landing here.

Make sure the load statement is correct. It should be the name of the file, not the name of the app. For instance, if you have this app:

appname
├── __init__.py
├── templatetags
│   ├── __init__.py
│   └── foobarfilename.py

Then you should put this in your template:

{% load foobarfilename %}

Of course, you should check the other answers too.

After you have created the template tag and it should be within the ‘templatetags’ package within an app installed in the settings.INSTALLED_APPS, make sure you restart your dev-server.

Maybe someone will find this useful: somehow I had named the directory 'templatetags ' instead of 'templatetags', that is — with a space at the end. Took hours to finally realize.

All of the advice listed here didn’t help me. So in my specific case the problem was that the templatetag had to be loaded from a third-party app, and I manually copied source folder with that app into src folder in my virtualenv. Then I ran python setup.py install inside that folder. After that django could not load this module.

Then I removed the source and installed folder of this app and installed it using pip install -r requirements.txt after adding a relevant line into requirements.txt file. It was downloaded into the src folder, installed and everything began working properly. Hope this helps someone.

In my case
I have created library instance using tag variable instead of register variable

tag = template.Library()

But it should be

register = template.Library()

To be a valid tag library, the module must contain a module-level
variable named register that is a template.Library instance, in which
all the tags and filters are registered

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

I had to change to {% filename %}

In my case it was – I am using

@register.inclusion_tag('template-to-use.html')

I forgot to create that template and right away it started working. I know above answers are more related to most of the issues – but hope maybe someone find it useful. It should have gotten to me:

Template does not exist

but it did not and this worked.