Django Admin Create Form Inline OneToOne

问题

I have the following model:

from django.db import models


class Profile(models.Model):
    user = models.OneToOneField(User, on_delete=models.CASCADE)
    last_password_reset = models.DateTimeField(auto_now_add=True)
    needs_password_reset = models.BooleanField(default=True)
    image_url = models.URLField(max_length=500, default=None, null=True, blank=True)

I am trying to inline this into the admin. I have the following:

from django import forms
from django.contrib.auth.models import User
from django.contrib.auth.admin import UserAdmin
from django.contrib.auth.forms import UserCreationForm

class UserProfileInline(admin.StackedInline):
    """User profile inline."""

    model = Profile
    can_delete = False
    verbose_name_plural = "Profile"


class CustomUserCreationForm(UserCreationForm):
    """Create user form."""

    class Meta:
        model = User
        fields = ("username", "first_name", "last_name", "email")


class CustomUserAdmin(UserAdmin):
    """Custom user admin."""

    add_form = CustomUserCreationForm
    inlines = (UserProfileInline,)


admin.site.unregister(User)
admin.site.register(User, CustomUserAdmin)

This is working fine up to a point; when I go to create user, I can see the inlined profile information. However, when I try to submit the form I get the following error (on /admin/auth/user/add/):

psycopg2.errors.NotNullViolation: null value in column "user_id" violates not-null constraint

Why is the user_id field not getting populated in the inline form? How can I set this attribute to the id of the user created by the form?

回答1:

Turns out I needed to remove some signals I had written for automatic profile creation:

# Create a profile for new users
@receiver(post_save, sender=settings.AUTH_USER_MODEL)
def create_user_profile(sender, instance=None, created=False, **kwargs):
    if created:
        Profile.objects.get_or_create(user=instance)


# Update profile on user change
@receiver(post_save, sender=User)
def save_user_profile(sender, instance=None, created=False, **kwargs):
    instance.profile.save()

来源：https://stackoverflow.com/questions/56465018/django-admin-create-form-inline-onetoone

标签

python

django

django-models

django-admin