我在运行我的 django 代码时收到以下错误。我是一个绝对的初学者，我正在按照教程创建一个crud应用程序。
在我的 html 表单中输入信息时，出现以下错误
ValueError：无法在0x00000288775D3EF0处分配 django.contrib.auth.models.AnonymousUser 对象："Note.user"必须是"User"实例
从form.instance.user = request.user在我的 views.py
views.py
from django.shortcuts import render
from django.shortcuts import render, redirect
from .models import Note
# Create your views here.
from .forms import NoteModelForm
# CRUD - create update retrieve and delete
def createView(request):
form = NoteModelForm(request.POST or None, request.FILES or None)
if form.is_valid():
form.instance.user = request.user
form.save()
return redirect('/')
context = {
'form': form
}
return render(request, "create.html", context)
forms.py
from django import forms
from .models import Note
class NoteModelForm(forms.ModelForm):
class Meta:
model = Note
fields = ['title','url','image']
创建.html
<!DOCTYPE html>
<html>
<head>
<title>CRUD APP</title>
</head>
<body>
<form method="POST" enctype="multipart/form-data">
{% csrf_token %}
{{ form.as_p }}
<input type="submit" name="submit">
</form>
</body>
</html>
如果用户未登录，request.user会给出 AnonymousUser，无法将其分配给表单实例。
为避免这种情况，您可以在访问视图之前添加条件。为此，您可以使用login_required装饰器，如下所示
from django.contrib.auth.decorators import login_required
@login_required
def createView(request):
....