XYZ 是此函数的无效关键字参数

Question

我已经定义并创建了以下模型：class Links(models.Model):    id = models.AutoField(primary_key=True, unique=True),    longlink = models.CharField(max_length=100),    shortlink = models.CharField(max_length=15),    createdate = models.DateField(default=timezone.now)    def __str__(self):        return self.longlink我的代码：from appointments.models import Linksdef shortlinkgen():    import secrets    return secrets.token_urlsafe(4) def DateToday():    from datetime import datetime, date, time    now = datetime.now()    return now.strftime("%Y-%m-%d")link = Links(longlink='https://mail.google.com/mail/u/0/#inbox/FMfcgxvzKQmmrZMGFJVWvsLlFPxQKhJG', shortlink=shortlinkgen(), createdate=DateToday())link.save()print(link)我收到错误：TypeError                                 Traceback (most recent call last)<ipython-input-2-66d347994058> in <module>()    9     return now.strftime("%Y-%m-%d")    10 ---> 11 link = Links(longlink='https://mail.google.com/mail/u/0/#inbox/FMfcgxvzKQmmrZMGFJVWvsLlFPxQKhJG', shortlink=shortlinkgen(), createdate=DateToday())    12 link.save()    13 print(link)~/.local/lib/python3.6/site-packages/django/db/models/base.py in __init__(self, *args, **kwargs)    482                     pass    483             for kwarg in kwargs:--> 484                 raise TypeError("'%s' is an invalid keyword argument for this function" % kwarg)    485         super().__init__()    486         post_init.send(sender=cls, instance=self)TypeError: 'longlink' is an invalid keyword argument for this function怎么了？

Answer 1

class Links(models.Model):

    id = models.AutoField(primary_key=True, unique=True),

    longlink = models.CharField(max_length=100),

    shortlink = models.CharField(max_length=15),

    createdate = models.DateField(default=timezone.now)

    def __str__(self):

        return self.longlink

问题在于每行末尾的“，”。您将字段定义为它们的类引用，而不是这些类的实例。它应该是

class Links(models.Model):

    id = models.AutoField(primary_key=True, unique=True)

    longlink = models.CharField(max_length=100,default="") #or null=True incase!

    shortlink = models.CharField(max_length=15,default="")

    createdate = models.DateField(default=timezone.now)

结果如下：