Django - Failed to import a models file from another app

Question

I'm trying to import a model into some app from another app, but it throws an error.

from django.db import models
from ..book.models import Book


class Cart:
    books = models.ManyToManyField(Book)

Error:

ValueError: attempted relative import beyond top-level package

But if I do:

from django.db import models
from book.models import Book


class Cart:
    books = models.ManyToManyField(Book)

PyCharm will be complaining. It says "Unsolved reference book".

This won't work as well:

from django.db import models
from shop.book.models import Book


class Cart:
    books = models.ManyToManyField(Book)

Error:

ModuleNotFoundError: No module named 'shop.book'

Can you add your project structure(tree structure) in the question? — Angela, Aug 17 '18 at 00:55
fix the project root on. Pycharm > Preferences > Project > Project Structure > Add content root — Eddwin Paz, Aug 17 '18 at 20:39

score 0 · Answer 1 · answered Aug 17 '18 at 00:44

0

You should try importing with a function. def make_it_im_port(self): import(x) Then call the function.

answered Aug 17 '18 at 00:44

pfcodes · Answer 2 · 2018-08-17T01:14:15.893

0

Make sure book exists as an app in the INSTALLED_APPS list within settings.py

edited Aug 17 '18 at 01:14

answered Aug 17 '18 at 01:12

pfcodes

I'm pretty sure it exists in INSTALLED_APPS in the settings.py – SpellTheif Aug 17 '18 at 01:13
Does `Book` exist as a class in `book/models.py`? – pfcodes Aug 17 '18 at 01:15
Also, make sure your PyCharm project interpreter is using the Python binary located in the virtualenv you set up. – pfcodes Aug 17 '18 at 01:17
Does the version of Python matter? I'm using Python 3.7 – SpellTheif Aug 17 '18 at 01:23
@Jinx nope, just the fact that the Project Interpreter is pointing to one of the python binaries in `~/PycharmProjects/eBookstore/venv/bin/` – pfcodes Aug 17 '18 at 01:25
Try the solutions offered here https://stackoverflow.com/questions/21236824/unresolved-reference-issue-in-pycharm – pfcodes Aug 17 '18 at 01:32

Arghya Saha · Accepted Answer · 2018-08-17T01:44:16.580

0

Your code would work fine when you use the below. It is a pycharm issue and you can solve the pycharm issue by doing this

from django.db import models
from book.models import Book 
class Cart:
    books = models.ManyToManyField(Book)

edited Aug 17 '18 at 01:44

answered Aug 17 '18 at 01:33

Arghya Saha

3 Answers3