Question

我收到了一个错误， / accounts / upload_save /中的MultiValueDictKeyError ＆＃34;＆＃39;图像＆＃39;＆＃34; 。我正在制作文件上传系统。如果我选择文件并放入＆＃34; SEND＆＃34;按钮，所选图像被发送到模型。但是现在，当我选择没有图像并且放置＆＃34; SEND＆＃34;按钮，错误发生。我想制作一个系统，如果我没有选择图像并放置＆＃34; SEND＆＃34;按钮，显示<div class="container" id="photoform"> {% if form.errors %} 　<div class="alert alert-danger" role="alert"> 　<p>You should select at least one photo</p> 　　</div> 　　　{% endif %} <form action="/accounts/upload_save/" method="POST" enctype="multipart/form-data"> {% csrf_token %} 　　<div class="input-group"> <label class="input-group-btn" style="width: 30%;"> <span class="btn btn-primary btn-lg"> File Select1 <input type="file" name="image"> </span> </label> 　　　 <input type="text" class="form-control" readonly=""> 　　</div> 　　<div class="input-group"> <label class="input-group-btn" style="width: 30%;"> <span class="btn btn-primary btn-lg"> File Select2 <input type="file" name="image2"> </span> </label> 　　　 <input type="text" class="form-control" readonly=""> 　　</div> 　　　　<div class="input-group"> <label class="input-group-btn"> <span class="btn btn-primary btn-lg"> File Select3 <input type="file" name="image3"> </span> </label> 　　　 <input type="text" class="form-control" readonly=""> 　　</div> <div class="form-group"> <input type="hidden" value="{{ p_id }}" name="p_id" class="form-control"> </div> <div class="form-group"> <input type="submit" value="SEND" class="form-control"> </div> </form> </div>消息。

我在photo.html中写道

@login_required
@csrf_exempt
def upload_save(request):
    if request.method == "POST":
        form = UserImageForm(request.POST, request.FILES)
        if form.is_valid():
            data = form.save(commit=False)
            data.user = request.user
            data.image = request.FILES['image']
            data.save()
        else:
            print(form.errors)
    else:
        form = UserImageForm()

    return render(request, 'registration/photo.html', {'form': form})

我在views.py中写道

urlpatterns = [
    url(r'^upload_save/$', views.upload_save, name='upload_save'),
]

在urls.py中

   class UserImageForm(forms.ModelForm):
        class Meta:
            model = ImageAndUser
            fields = ('image',)

在forms.py

中

class ImageAndUser(models.Model):
    user = models.ForeignKey("auth.User", verbose_name="imageforegin")
    image = models.ImageField(upload_to='images', null=True, blank=True,)

    date = models.IntegerField(max_length=100,null=True)

在models.py

中

noexcept

我真的无法理解为什么会发生这种错误，因为我写了if-else语句，并且我在else语句中打印（form.errors）。我该怎么做才能解决这个问题？我怎么写呢？

Answer 1

class UserImageForm(forms.ModelForm):
    image = forms.ImageField()
    class Meta:
        model = ImageAndUser
        fields = ('image',)

并更改您的views.py

@login_required
@csrf_exempt
def upload_save(request):
    if request.method == "POST":
        form = UserImageForm(request.POST, request.FILES)
        if form.is_valid():
            data = form.save(commit=False)
            data.user = request.user
            data.image = form.cleaned_data['image']
            data.save()
        else:
            print(form.errors)
    else:
        form = UserImageForm()

    return render(request, 'registration/photo.html', {'form': form})

/ accounts / upload_save /中的MultiValueDictKeyError

1 个答案: