AttributeError: 'Options' object has no attribute 'name'

SYMPTOMS

Faulty code:

# models.py
from django.db import models

class Author(models.Model):
    name = models.CharField(max_length=100)

# schema/author.py
import graphene
from graphene_django import DjangoObjectType
from .models import Author

class AuthorType(DjangoObjectType):
    class Meta:
        model = Author
        fields = "__all__"

When splitting the main schema into files, this errors occurred when opening graphql editor:

AttributeError: 'Options' object has no attribute 'name'

FIX

The fix was simple — instead of:

# models.py
from django.db import models

class Author(models.Model):
    name = models.CharField(max_length=100)

# schema/author.py
import graphene
from graphene_django import DjangoObjectType
from .models import Author

class AuthorType(DjangoObjectType):
    class Meta:
        model = Author
        fields = "__all__"

I had to import graphene_django.types.DjangoObjectType and use it as a base class:

# schema/author.py
import graphene
from graphene_django.types import DjangoObjectType  # <- Import from here
from .models import Author

class AuthorType(DjangoObjectType):
    class Meta:
        model = Author
        fields = "__all__"

TAKEAWAY: Always import graphene_django.types.DjangoObjectType instead of using DjangoObjectType directly when splitting Graphene schemas into files.