Unresolved reference 'models'

Question

I am writing custom template tag, and the error occurs that "Unresolved reference 'models'" the following is my blog_tags.py.

from django import template

from .models import Post

register = template.Library()


@register.simple_tag
def total_posts():
    return Post.published.count()

And my directory tree is as followed

blog/
  __init__.py 
  models.py 
  ...
  templatetags/
     __init__.py
     blog_tags.py

And i do have a Post class in my Models.

And when i click the prompt by pycharm "install package Post", after finishing installed it, the error disappear. I wonder do i have to do the same, which is install the package by the IDE, every time when i want to write a custom tag evolved with class in my Models?

`from ..models import Post` if you want to make a relative import. `.` means from the same folder, so it is looking in `templatetags` where there is no `models.py`. — j-i-l, Apr 29 '17 at 14:18
@nik_m I tried blog.models but it doesn't work, however the ..models worked — Richard, Apr 30 '17 at 06:50

score 5 · Answer 1 · answered Apr 29 '17 at 14:09

If I'm interpreting your project structure correctly, your models module is located in a parent package relative to blog_tags. Accessing .models would try to find the module inside your templatetags package.

Try to change your import to this instead:

from ..models import Post

score 1 · Answer 2 · answered Apr 29 '17 at 14:29

1

As this is Django and as in Django circular imports can be an issue, consider dynamically loading the model:

for django 1.7+ use the application registry:

from django.apps import apps
Post = apps.get_model('blog', 'Post')

for earlier versions:

from django.db.models.loading import get_model
Post = get_model('blog', 'Post')

Note: This only works if 'blog' is an installed app.

answered Apr 29 '17 at 14:29

j-i-l

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Sorry but what is circular import? – Richard Apr 30 '17 at 06:52

score 0 · Answer 3 · edited May 23 '17 at 12:26

0

import your models with app namespace instead of relative import, so that the standard structure is maintained.

from django import template

# blog is your app name
from blog.models import Post

register = template.Library()


@register.simple_tag
def total_posts():
    return Post.published.count()

Please check here unresolved error issue related to pycharm in django projects

edited May 23 '17 at 12:26

Community

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answered Apr 29 '17 at 14:27

Renjith Thankachan

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I've tried with blog.models, but it won't work. and with ..models worked – Richard Apr 30 '17 at 06:52
i support @jojo 's answer – Renjith Thankachan May 01 '17 at 09:51

Unresolved reference 'models'

3 Answers3