Problem: No name 'departments' in module 'funcionario.apps'

Question

I cannot pass this phase because when compiling it presents the error : No name 'departments' in module 'funcio.apps'

from django.db import models
from django.contrib.auth.models import User
from .apps.departamento.models import Departamento


class Funcionario(models.Model):
    nome =  models.CharField(max_length=100, help_text='Nome do Funcionario')
    user = models.ForeignKey(User, on_delete=models.PROTECT)
    departamentos = models.ManyToManyField(Departamento)

    def __str__(self):
        return self.nome

Answer 1

Well, the error is self-descriptive.

What he says is that there is the name "department"- the prefix .apps tells Python - the language - that in the directory where this file is - that possibly is in another "app" of Django, there is a folder apps, and inside that folder he could find a directory with name departamentos or a file called departamentos.py. Not the case - if your Django project is structured in the way described in the documentation for Django, you have an "app" "departments" sister app "employee" a folder above.

Import will work if you import the "departments" package directly, once Django configures Pythonpath to find the apps installed in the project:

from departamento.models import Departamento

Unless mistaken, Django’s ORM is also smart enough to find the template from a string, with the name_da_app.template name_do_template - in this case, you don’t even need to import -just change your field statement to:

departamentos = models.ManyToManyField("departamentos.Departamento")

(Django’s ORM has this feature - the "saved mistake" is that I don’t remember if anything else has to be put in the string to address the other model correctly).