从CreateView填充addd_by字段 [英] Populate added_by field from CreateView

问题描述

我扩展了 django-taggit TagBase模型以包含added_by字段作为User的外键:

I have extended django-taggit TagBase model to include an added_by field as a ForeignKey to User:

class TagBase(models.Model):
    name = models.CharField(verbose_name=_("Name"), unique=True, max_length=100)
    slug = models.SlugField(verbose_name=_("Slug"), unique=True, max_length=100)
    added_by = models.ForeignKey(User, on_delete=models.CASCADE)

一切正常，但是我在CreateView中填充该字段时遇到了问题.这是我尝试过的:

Everything works great, however I'm having an issue with populating that field from my CreateView. This is what I have tried:

class NoteCreateView(LoginRequiredMixin, CreateView):
    model = Note
    fields = [
        'title',
        'description',
        'notebook',
        'tags'
    ]

    def form_valid(self, form):
        form.instance.added_by = self.request.user
        form.instance.save()
        for tag in form.instance.tags.all():
            tag.added_by = self.request.user
        return super().form_valid(form)

但是我遇到了错误:

IntegrityError at /notes/1/create/ NOT NULL constraint failed: taggit_tag.added_by_id

如何正确在标签实例上自动填充added_by字段?

How do I properly autopopulate added_by field on my tag instances?

推荐答案

用户是匿名用户吗?我认为您可以打印 self.request.user 进行检查.

Is the user anonymous? I think you can print the self.request.user to check.

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