模型中的外键(用户)

2022-01-20 00:00:00 python django django-models foreign-keys

问题描述

我阅读了文档和这篇文章... Django - 用户模型的外键

I read the docs and this post... Django - Foreign Key to User model

我按照它所说的去做，但我仍然无法让它工作.当我尝试运行迁移时，我在回溯中收到此错误...

I followed what it said and I still cannot get it to work. When I try to run the migrations I get this error in the traceback...

django.db.utils.ProgrammingError: column "author_id" cannot be cast automatically to type integer
HINT:  You might need to specify "USING author_id::integer".

我只是不知道如何解决这个错误.

I just don't know how to go about fixing that error.

from django.db import models
from django.contrib.auth.models import User

# Create your models here.
class BlogCategory(models.Model):
    '''model for categories'''

    title = models.CharField(max_length=30)
    description = models.CharField(max_length=100)


class BlogPost(models.Model):
    '''a model for a blog post'''

    author = models.ForeignKey(User)
    date = models.DateField()
    title = models.CharField(max_length=100)
    post = models.TextField()

解决方案

我不知道settings.AUTH_USER_MODEL"方法，但是一个众所周知的方法，常用的是Auth.User"模型.像你这样的东西.

I do not know the "settings.AUTH_USER_MODEL" approach but a well-known approach and commonly used is the "Auth.User" model. Something like this on your end.

from django.contrib.auth.models import User

class BlogPost(models.Model):
    '''a model for a blog post'''

    author = models.ForeignKey(User)
    date = models.DateField()
    title = models.CharField(max_length=100)
    post = models.TextField()

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