关系 "blog_comment" 的列 "comment_id" 中的空值违反了非空约束

Question

当尝试在我的 Django 博客中创建评论应用程序时，我得到了列出关系“blog_comment”的列“comment_id”中的空值违反非空约束”错误多于。对于页面视图，我使用了带有 FormMixin 的详细视图。我不确定为什么会收到此错误。感谢任何帮助。

完整的错误信息

IntegrityError at /post/7/
null value in column "comment_id" of relation "blog_comment" violates not-null constraint
DETAIL:  Failing row contains (6, dafsdfa, sdfasdfasdf, sdfadfa, 2021-03-10 15:03:11.283567+00, null).

views.py

class DetailPostView(FormMixin, DetailView):
    model = Post
    template_name = "blog/post_detail.html"
    context_object_name = "posts"
    form_class = CommentForm

    def form_valid(self, form):
        form.save()
        return super().form_valid(form)

    def post(self, request, *args, **kwargs):
        form = self.get_form()
        self.object = self.get_object()
        if form.is_valid():
            return self.form_valid(form)
        else:
            return self.form_invalid(form)

    def get_success_url(self):
        return reverse("post-detail", kwargs={"pk": self.object.pk})

Models.py

class Comment(models.Model):
    comment = models.ForeignKey(Post, on_delete=models.CASCADE)
    title = models.CharField(max_length=200)
    content = models.TextField()
    author = models.CharField(max_length=50)
    created_on = models.DateTimeField(auto_now_add=True)

Forms.py

class CommentForm(forms.ModelForm):
    class Meta:
        model = Comment
        labels = {"author": "Author", "title": "Title", "content": "Comment"}

        fields = ["author", "title", "content"]

Answer 1

查看评论。特伦特指出，我没有在 forms.py.

中引用要评论的 post

关系 "blog_comment" 的列 "comment_id" 中的空值违反了非空约束

null value in column "comment_id" of relation "blog_comment" violates not-null constraint

python

django

postgresql

view