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Asked:2022-03-29 15:44:40 +0800 CST2022-03-29 15:44:40 +0800 CST

是什么导致了错误？

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我尝试通过继承 AbstractUser 来扩展 User 模型：

模型.py

class Teacher(AbstractUser):
    name = models.CharField(max_length=20)
    surname = models.CharField(max_length=20)
    subject = models.ForeignKey(Subject, on_delete=models.CASCADE,
        related_name='teacher_subject')
    person = models.ForeignKey(settings.AUTH_USER_MODEL,
        on_delete=models.CASCADE)

设置.py

AUTH_USER_MODEL = 'education.Teacher'

表格.py

class TeacherRegistrationForm(UserCreationForm):

    class Meta(UserCreationForm):
        model = Teacher
        fields = ('name','surname','subject')

class TeacherChangeForm(UserChangeForm):

    class Meta:
        model = Teacher
        fields = ('name','surname','subject')

管理员.py

class TeacherUserAdmin(UserAdmin):
    add_form = TeacherRegistrationForm
    form = TeacherChangeForm
    model = Teacher
    list_display = ['name','surname','subject']

admin.site.register(Teacher, TeacherUserAdmin)

当我尝试创建迁移时，我得到了错误

courses.Course.owner: (fields.E301) Field defines a relation with the model 'auth.User', which has been swapped out.
        HINT: Update the relation to point at 'settings.AUTH_USER_MODEL'.
courses.Course.students: (fields.E301) Field defines a relation with the model 'auth.User', which has been swapped out.
        HINT: Update the relation to point at 'settings.AUTH_USER_MODEL'.
courses.File.owner: (fields.E301) Field defines a relation with the model 'auth.User', which has been swapped out.
        HINT: Update the relation to point at 'settings.AUTH_USER_MODEL'.
courses.Image.owner: (fields.E301) Field defines a relation with the model 'auth.User', which has been swapped out.
        HINT: Update the relation to point at 'settings.AUTH_USER_MODEL'.
courses.Text.owner: (fields.E301) Field defines a relation with the model 'auth.User', which has been swapped out.
        HINT: Update the relation to point at 'settings.AUTH_USER_MODEL'.
courses.Video.owner: (fields.E301) Field defines a relation with the model 'auth.User', which has been swapped out.
        HINT: Update the relation to point at 'settings.AUTH_USER_MODEL'.

我该怎么办？

python

1 个回答

  1. Best Answer

    删除所有迁移，基础。复制我的代码，粘贴到你的。进行迁移。

    # app/models.py
from django.conf import settings
from django.contrib.auth.models import User, AbstractUser
from django.db import models

class Teacher(AbstractUser):
    name = models.CharField(max_length=20)
    surname = models.CharField(max_length=20)
    user = models.OneToOneField(settings.AUTH_USER_MODEL, on_delete=models.CASCADE)

    # admin.py
from django.contrib import admin
from django.contrib.auth.admin import UserAdmin as BaseUserAdmin
from django.contrib.auth.models import User
from app.models import Teacher


class TeacherInline(admin.StackedInline):
    model = Teacher
    can_delete = False
    verbose_name_plural = 'teachers'


class UserTeacher(BaseUserAdmin):
    inlines = (TeacherInline,)

admin.site.register(User, UserTeacher)

    settings.py你说的是forms.py对的，和你的问题无关。

    显然，该错误特别是在以前的迁移中。该示例开始 - 有效。（请注意，我从您的老师那里简化（删除）了一个字段）

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