保存内容时意外的参数

Question

我是django的新手。我尝试制作反馈应用，但我无法保存内容。它显示：

  

意外的论点“名字”

我的代码是

views.py

def index(request):
    return render(request, 'index.html')


def positive(request):
    if(request.method=="POST"):
        confirm_message = " "
        context = {'confirm_message': confirm_message}
        name = request.POST['name']
        suggest = request.POST['suggest']
        improve = request.POST['improve']
        posi = positive(name=name , suggest=suggest , improve=improve)
        posi.save()
        confirm_message = "Thanks for the message . We Will get right back to you."
        context = {'confirm_message': confirm_message,} 
        return render(request,'positive.html',context)

    else:
        return render(request,'positive.html')



def negative(request):
    if(request.method=="POST"):
        confirm_message = " "
        context = {'confirm_message': confirm_message}
        name = request.POST['name']
        upset = request.POST['upset']
        change = request.POST['change']
        negi = negative(name=name , upset=upset , change=change)
        negi.save()
        confirm_message = "Thanks for the message . We Will get right back to you."
        context = {'confirm_message': confirm_message,} 
        return render(request,'negative.html',context)

    else:
        return render(request,'negative.html')

models.py

class positive(models.Model):
    name = models.CharField(max_length=50,default=None)
    suggest = models.CharField(max_length=100)
    improve = models.CharField(max_length=150)

    created_at = models.DateTimeField(default=datetime.now)

    def __str__(self):
        return u'Name : %s suggest:   %s \nimprove:   %s  ' % (self.name,self.suggest,self.improve)


class negative(models.Model):
    name = models.CharField(max_length=50,default=None)
    upset = models.CharField(max_length=100)
    change = models.CharField(max_length=100)

    def __str__(self):
        return u'Name : %s upset:   %s \nchange:   %s  ' % (self.name,self.upset,self.change)