尝试保存模型时出现 Django TypeError

Question

我正在尝试添加待办事项，但当我尝试保存我的模型时，它说待办事项有一个意外的关键字参数。

TypeError at /
todo() got an unexpected keyword argument 'user'

它抛出以下错误

我的models.py

class todo(models.Model):
   user = models.ForeignKey(User, on_delete=models.CASCADE)
   title = models.CharField(max_length=100)
   description = models.TextField()
   date= models.DateTimeField(auto_now = True)
   is_completed = models.BooleanField(default=False)


   def __str__(self):
      return self.user.username + self.title

我的观点是这样的

def todo(request):
  if request.method == "POST":
    title = request.POST.get('title')
    description = request.POST.get('description')
    todo_list = todo(user=request.user, title=title, description= description)
    todo_list.save()
    messages.success(request, 'Successfully Created')
return render(request, 'main/todo.html')

请帮帮我

Answer 1

您的模型和视图都命名为 todo，因此如果您在该视图中调用 todo，该函数将覆盖模型，从而进行递归调用。

您可以使用不同的名称导入 todo，例如：

from <i>app_name</i>.models import todo as todo_model

def todo(request):
  if request.method == 'POST':
    title = request.POST.get('title')
    description = request.POST.get('description')
    todo_list = <b>todo_model</b>.objects.create(
        user=request.user,
        title=title,
        description= description
    )
    messages.success(request, 'Successfully Created')
return render(request, 'main/todo.html')

但是根据PEP-8 style guidelines，类写在PerlCase，不是snake_case。因此，您可能希望将模型重命名为：

class <b>Todo</b>(models.Model):
   user = models.ForeignKey(User, on_delete=models.CASCADE)
   title = models.CharField(max_length=100)
   description = models.TextField()
   date= models.DateTimeField(auto_now = True)
   is_completed = models.BooleanField(default=False)


   def __str__(self):
      return self.user.username + self.title

然后您可以使用：

from <i>app_name</i>.models import <b>Todo</b>

def todo(request):
  if request.method == 'POST':
    title = request.POST.get('title')
    description = request.POST.get('description')
    todo_list = <b>Todo</b>.objects.create(
        user=request.user,
        title=title,
        description= description
    )
    messages.success(request, 'Successfully Created')
return render(request, 'main/todo.html')

Note: It is normally better to make use of the settings.AUTH_USER_MODEL [Django-doc] to refer to the user model, than to use the User model [Django-doc] directly. For more information you can see the referencing the User model section of the documentation.

Note: You can limit views to a view to authenticated users with the @login_required decorator [Django-doc].

Note: It is better to use a Form [Django-doc] than to perform manual validation and cleaning of the data. A Form will not only simplify rendering a form in HTML, but it also makes it more convenient to validate the input, and clean the data to a more convenient type.

尝试保存模型时出现 Django TypeError

Django TypeError when trying to save the model

python

django

typeerror