我使用的是Django + MongoDB。下面我附上了我的看法张贴我的数据在用户模型。

def register(request):
    try:
        if request.method == 'POST':
            name = request.POST.get('name')     
            print(name)       
            email = request.POST.get('email')         
            print(email)
            age = request.POST.get('age')
            print(age)
            qualification = request.POST.get('qualification')
            print(qualification)
            password = request.POST.get('password')
            print(password)
            hashed_password = make_password(password)
            role = request.POST.get('role')
            print(role)
            if role == 'student':
                is_student = True
                is_instructor = False
            if role == 'instructor':
                is_instructor = True
                is_student = False   
            user1 = User.objects.filter(email=email).first()
            # print(user1)
            if user1 is not None:
                print(2)
                message = "Email already in used."
                messages.add_message(request, messages.INFO, message)
                return render(request, 'signup.html') 
            user = User(email=email, name=name, age=age, qualification=qualification, password=hashed_password, is_student=is_student, is_instructor=is_instructor) 
            print(user) 
            user.save()
            request.session['email'] = email
            OTP_email(email)
            
            return redirect('otp')
        
        return render(request, 'signup.html')

在打印user时，我发现使用了多个print语句，它打印了None。我检查了是否是数据库的错误，可能用户模型没有定义，但我使用hasattr（）方法检查了django shell，它返回True，所以有数据库模型名称User。现在我不明白为什么它打印None，而不是打印dict或List。
我尝试了多种方法来存储示例。