我已经查看过相关问题,但没有一个答案似乎有效。我正在尝试为用户上传个人资料图片,并让它替换(覆盖)当前图像。保存图像后,我想将文件名更改为用户ID。在当前形式中,图像将上传,但不会替换现有图像(例如,它将保存为2_1.png)。
class PhotoForm(forms.ModelForm):
def save(self):
content_type = self.cleaned_data['photo'].content_type.split('/')[-1]
filename = '%d.%s' % (self.instance.user.id, content_type)
instance = super(PhotoForm, self).save(commit=False)
instance.photo = SimpleUploadedFile(filename, self.cleaned_data['photo'].read(), content_type)
instance.save()
return instance
class Meta:
model = UserProfile
fields = ('photo',)
def photo_form(request):
if request.method == 'POST':
form = PhotoForm(data=request.POST, file=request.FILES, instance=request.user.get_profile())
if form.is_valid():
form.save()
else:
form = PhotoForm()
return render(request, 'photo_form.html', {'form': form})
答案 0 :(得分:5)
def photo_form(request):
if request.method == 'POST':
form = PhotoForm(data=request.POST, file=request.FILES, instance=request.user.get_profile())
if form.is_valid():
handle_uploaded_file(request.FILES['<name of the FileField in models.py>'])
def handle_uploaded_file(f):
dest = open('/path/to/file', 'wb') # write should overwrite the file
for chunk in f.chunks():
dest.write(chunk)
dest.close()
点击此处:https://docs.djangoproject.com/en/dev/topics/http/file-uploads/ 如果这不起作用,我想如果表单被接受,我可以使用os.system删除文件。这可能不是一个很好的解决方案,但它应该有效。