python之在 Django 中更新字段不起作用

我的 views.py 中有以下内容

if request.method=='POST': 
    form = ExtraForm(request.POST,instance=request.user) 
    print ("hi") 
    if form.is_valid(): 
        form.save() 
        print ("yes") 
    print ("newform is ") 
else: 
    form = ExtraForm(instance=request.user) 
    context['form']=form 
return render(request, "updateProfile.html",context) 

现在发生的是，我没有收到任何错误，它做的一切都很好，但它最终没有更新任何东西!!这对我来说没有意义。知道发生了什么事吗？

额外形式:

class ExtraForm(forms.ModelForm): 
    research_place = forms.CharField(max_length=256, label="", required=True, widget=forms.TextInput(attrs={'class': 'form-control','placeholder': 'First Name','required':True})) 
    studies = forms.CharField(max_length=256, label="", required=True, widget=forms.TextInput(attrs={'class': 'form-control','placeholder': 'Last Name','required':True})) 
 
    class Meta: 
        model = RegisterUser 
        fields = ['research_place','studies'] 
        widgets = { 
            # 'image': ImageCropWidget, 
        } 

模型:

class RegisterUser(models.Model): 
    user=models.OneToOneField(User,on_delete=models.CASCADE) 
 
    biography = models.CharField(max_length=1000000,blank=True) 
    research_place = models.CharField(max_length=1000000,blank=True) 
    studies = models.CharField(max_length=1000000,blank=True) 
 
    image = models.ImageField(blank=True,null=True,upload_to='uploaded_images',default ="uploaded_images/defaultReal.jpg") 
    # cropping = ImageRatioField('image','200x200',size_warning=True) #width x height 
 
    avatar_thumbnail = ImageSpecField(source='image', 
                                    processors=[ResizeToFill(200, 200)], 
                                    format='JPEG', 
                                    options={'quality': 60}) 
 
    activation_key = models.CharField(max_length=50) 
    key_expires = models.DateTimeField() 
    class Meta: 
        permissions = ( 
            ("has_uploaded", ("Has uploaded")), 
            ("is_authenticated", ("Is authenticated")), 
        ) 

请您参考如下方法:

看起来表单根本无效。添加一个 else 子句并检查 errors :

if request.method == "POST": 
    form = ExtraForm(request.POST, instance=request.user) 
    if form.is_valid(): 
        form.save() 
        # You should perform some redirection here btw. 
        return redirect("/success/") 
    else: 
        print "Errors:", form.errors 
        context["form"] = form 
else: 
    form = ExtraForm(instance=request.user) 
    context["form"] = form 
return render(request, "updateProfile.html", context) 

更新后:

您向表单传递了错误的用户。 request.user 是 User 类型，而您尝试更新 RegisteredUser。您应该更新行:

form = ExtraForm(request.POST, instance=request.user) 

到

form = ExtraForm(request.POST, instance=RegisteredUser.objects.get(user=request.user)) 

同样适用于 else 部分:

form = ExtraForm(instance=RegisteredUser.objects.get(user=request.user))