Question

我有2个类Snippet，评论。
错误：当我尝试创建一个片段对象时，始终使用默认评论对象创建评论对象，而不是我指定的评论对象。

s = Snippet()
s.comm.title = "Jello"
s.save()

这不起作用：

ss = Snippets.objects.all()[0].comm.title

返回＆＃34;默认标题＆＃34;不是＆＃34; Jello＆＃34;。

class Comment(models.Model):
    created = models.DateTimeField(auto_now_add=True)
    title = models.CharField(
        max_length=100,
        blank=True,
        default='default comment')


class Snippet(models.Model):
    created = models.DateTimeField(auto_now_add=True)
    title = models.CharField(max_length=100, blank=True, default='')
    code = models.TextField()
    linenos = models.BooleanField(default=False)
    language = models.CharField(choices=LANGUAGE_CHOICES,
                                default='python',
                                max_length=100)
    style = models.CharField(choices=STYLE_CHOICES,
                             default='friendly',
                             max_length=100)
    comm = Comment()

    def save(self, *args, **kwargs):
        self.comm.save()
        super(Snippet, self).save(*args, **kwargs)

Answer 1

您应该将models.ForeignKey用于comm模型中的Snippet字段。您可以在此链接中详细了解models.ForeignKey。

因此，您的Snippet模型看起来应该是这样的

class Snippet(models.Model):
    created = models.DateTimeField(auto_now_add=True)
    title = models.CharField(max_length=100, blank=True, default='')
    code = models.TextField()
    linenos = models.BooleanField(default=False)
    language = models.CharField(choices=LANGUAGE_CHOICES,
                                default='python',
                                max_length=100)
    style = models.CharField(choices=STYLE_CHOICES,
                             default='friendly',
                             max_length=100)
    comm = models.ForeignKey(Comment)

    def save(self, *args, **kwargs):
        self.comm.save()
        super(Snippet, self).save(*args, **kwargs)

自定义模型未保存

1 个答案: