Question

我想插入数据，并且正在使用create view。问题是我还想在不是来自表单的字段中传递外键怎么办？

示例：

class Addfile(CreateView):  
model=uploadAssignment
fields=['teacher','title','description','deadline']

除教师以外的所有字段都来自表单。教师将成为登录的用户对象，如何将其保存在字段（教师）中？

Answer 1

您将不得不覆盖form_valid函数，在该函数中，您需要相应地绑定外键

class Addfile(CreateView):
  success_message = 'Added Successfully'
  form_class = ...

  def form_valid(self, form):
    form.instance.teacher = self.request.user #here you bind the foreign key teacher to the current user

    response = super(Addfile, self).form_valid(form)

    return response

Answer 2

您需要在models.py文件中添加外键约束，看起来像这样

import <teacher/user>model as User
class UploadAssignment(models.Model):
     models.ForeignKey(User,blank=True,null=True,default=None,
                             on_delete=models.CASCADE)
     title = models.CharField(max_length=250, blank=False)
     description = models.CharField(max_length=250, blank=False)
     deadline = models.DateField()

在createview django的字段中添加外键（用户）值

2 个答案: