Django model id变成一个元组 [英] Django model id turns into a tuple

问题描述

我有一个超级类，我的模型如下：

I have a super class for my models as below:

class BaseModel(models.Model):
    """ BaseClass vase aksare model ha """

    def __init__(self, *args, **kwargs):
        super(BaseModel, self).__init__(args, kwargs)
        print('******> base model __init__')

    status = models.IntegerField(default=1)
    is_deleted = models.BooleanField(default=False)
    create_user = models.ForeignKey(User, related_name="%(app_label)s_%(class)s_creator_related")
    create_date = models.DateTimeField()
    update_date = models.DateTimeField()
    update_user = models.ForeignKey(User, related_name="%(app_label)s_%(class)s_updater_related")

    class Meta:
        abstract = True

    def validate(self):
        print('^^^^^^^^^^^^^^^^^^^^^^^^^^^^base validation')

我有一个配置文件模型如下：

and I have a profile model as below:

class Profile(BaseModel):
    def __init__(self, *args, **kwargs):
        super(Profile, self).__init__(args, kwargs)

    """ User profile """
    user = models.OneToOneField(User, related_name='profile')

    mobile = models.CharField(max_length=25, null=True)
    firstname_en = models.CharField(max_length=500, null=True)
    lastname_en = models.CharField(max_length=500, null=True)
    gender = models.IntegerField(default=0)
    birth_date = models.DateTimeField(null=True)
    edu_bg = models.ForeignKey('Category', related_name="profile__edu_bg", null=True)
    region = models.ForeignKey('Category', related_name="profile__region", null=True)

    credit = models.DecimalField(default=0, decimal_places=6, max_digits=15)
    key = models.TextField(null=True)
    secret = models.TextField(null=True)

当我想插入一个新的userProfile如下： p $

I have an error when I want to insert a new userProfile as below:

TypeError：int（）参数必须是字符串，像字节的对象或数字，而不是'tuple'。

TypeError: int() argument must be a string, a bytes-like object or a number, not 'tuple'.

然后打印vars（userprofileObject），并意识到'id'：（（），{}），但是我没有设置它。当我在插入代码中删除了 __ init __ 函数或将ID设置为 None 时，问题解决了。

then print the vars(userprofileObject) and realized that 'id': ((), {}), however, I have not set it. When I removed the __init__ functions or set id to None in insertion code, problem solved.

任何想法？

我需要这些 __ init __ ，也不想在我的代码中设置 id = None

I need those __init__ and also don't want to set id=None in my code

推荐答案

这是django的模型工作。您不应该更改其 __ init __ 方法。
这就是为什么

This is how django's models work. You shouldn't change their __init__ method. This is why

您可能会试图通过覆盖 __ init __ 方法。但是，如果这样做，请注意不要更改呼叫签名，因为任何更改可能会阻止模型实例的保存。而不是重写 __ init __ ，请尝试使用以下方法之一：

You may be tempted to customize the model by overriding the __init__ method. If you do so, however, take care not to change the calling signature as any change may prevent the model instance from being saved. Rather than overriding __init__, try using one of these approaches:

# Add a classmethod on the model class:

from django.db import models

class Book(models.Model):
    title = models.CharField(max_length=100)

    @classmethod
    def create(cls, title):
        book = cls(title=title)
        # do something with the book
        return book

book = Book.create("Pride and Prejudice")

源 https://docs.djangoproject.com/en/1.10/ref/models/instances/#django.db.models.Model

同时阅读此编写要在django中使用的__init__函数模型

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