Question

我在使用外来对象创建用户个人资料时遇到问题。

我有一个用户，我想将帐户类型附加到该用户。

model.py

from __future__ import unicode_literals

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


class UserProfile(models.Model):
    user = models.ForeignKey(User, unique=True)
    account = models.ForeignKey(Account, unique=True)

class Account(models.Model):
    reports = models.IntegerField(default=3)
    accounttype = models.CharField(default='Free', max_length=250)
    description = models.CharField(default='N/A', max_length=250)
    monthlycost = models.FloatField(default=0.0)

    def __str__(self):
        return self.user.username + " - " + self.accounttype

问题是我收到以下错误：

account = models.ForeignKey(Account, unique=True)
NameError: name 'Account' is not defined

如何为外键调用Account类？

Answer 1

from __future__ import unicode_literals

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


class UserProfile(models.Model):
    user = models.ForeignKey(User, unique=True)
    account = models.ForeignKey("app_name.Account", unique=True)

class Account(models.Model):
    reports = models.IntegerField(default=3)
    accounttype = models.CharField(default='Free', max_length=250)
    description = models.CharField(default='N/A', max_length=250)
    monthlycost = models.FloatField(default=0.0)

    def __str__(self):
        return self.user.username + " - " + self.accounttype

您可以使用"app_name.Account"代替Account。将app_name替换为您应用的名称。

Answer 2

根据John Gordon的评论，我将Account移到了UserProfile之上并且有效

class Account(models.Model):
    reports = models.IntegerField(default=3)
    accounttype = models.CharField(default='Free', max_length=250)
    description = models.CharField(default='N/A', max_length=250)
    monthlycost = models.FloatField(default=0.0)

    def __str__(self):
        return self.user.username + " - " + self.accounttype


class UserProfile(models.Model):
    user = models.ForeignKey(User, unique=True)
    account = models.ForeignKey(Account, unique=True)

谢谢你们:)

Django在创建模型时出错

2 个答案: