Question

我有模特：

class OpenCv(models.Model):
    created_by = models.ForeignKey(User, blank=True)
    first_name = models.CharField(('first name'), max_length=30, blank=True)
    last_name = models.CharField(('last name'), max_length=30, blank=True)
    url = models.URLField(verify_exists=True)
    picture = models.ImageField(help_text=('Upload an image (max %s kilobytes)' %settings.MAX_PHOTO_UPLOAD_SIZE),upload_to='jakido/avatar',blank=True, null= True)
    bio = models.CharField(('bio'), max_length=180, blank=True)
    date_birth = models.DateField(blank=True,null=True)
    domain = models.CharField(('domain'), max_length=30, blank=True, choices = domain_choices)
    specialisation = models.CharField(('specialization'), max_length=30, blank=True)
    degree = models.CharField(('degree'), max_length=30, choices = degree_choices)
    year_last_degree = models.CharField(('year last degree'), max_length=30, blank=True,choices = year_last_degree_choices)
    lyceum = models.CharField(('lyceum'), max_length=30, blank=True)
    faculty = models.ForeignKey(Faculty, blank=True,null=True)
    references = models.CharField(('references'), max_length=30, blank=True)
    workplace = models.ForeignKey(Workplace, blank=True,null=True)

形式：

class OpencvForm(ModelForm):
class Meta:
      model = OpenCv
      fields = ['first_name','last_name','url','picture','bio','domain','specialisation','degree','year_last_degree','lyceum','references']

和视图：

 def save_opencv(request):
   if request.method == 'POST':
    form = OpencvForm(request.POST, request.FILES)
   # if 'picture' in request.FILES:
    file = request.FILES['picture']
    filename = file['filename']
    fd = open('%s/%s' % (MEDIA_ROOT, filename), 'wb')
fd.write(file['content'])
    fd.close() 
    if form.is_valid():
       new_obj = form.save(commit=False)
       new_obj.picture = form.cleaned_data['picture']
       new_obj.created_by = request.user

       new_obj.save()
       return HttpResponseRedirect('.')    
  else:
       form = OpencvForm()     
  return render_to_response('opencv/opencv_form.html', {
       'form': form,
       }, 
      context_instance=RequestContext(request))

但我似乎没有在我的数据库中保存图片 ......出了点问题，我无法弄明白:(

Answer 1

你不能轻易地帮助你 - 你没有说明实际发生的事情。

但我的猜测是，您的HTML enctype="multipart/form-data"元素中未包含form。

我建议阅读the file upload documentation - 你在这里手动做了一些可以由Django为你处理的事情。

Answer 2

尝试： filename = file.name！

http://docs.djangoproject.com/en/dev/topics/http/file-uploads/

Answer 3

我找到了解决方案：

def save_opencv(request):
    if request.method == 'POST':
    form = OpencvForm(request.POST, request.FILES) 
    if form.is_valid():
       handle_uploaded_file(request.FILES['picture'])
       new_obj = form.save(commit=False)
       new_obj.created_by = request.user

       new_obj.save()
       return HttpResponseRedirect('.')    
   else:
       form = OpencvForm()     
  return render_to_response('opencv/opencv_form.html', {
       'form': form,
       }, 
      context_instance=RequestContext(request))

和handle_uploaded_file：

  def handle_uploaded_file(f):
     destination = open('root', 'wb+')
      for chunk in f.chunks():
      destination.write(chunk)
    destination.close()

请查看缩进。另外，在models.py我有：

picture = models.ImageField(help_text=('Upload an image (max %s kilobytes)' %settings.MAX_PHOTO_UPLOAD_SIZE),upload_to='root',blank=True)

请注意我将其保存到root，这意味着我的网站的根，而不是与计算机文件组织相关的任何内容。此外，代码没什么大不了的，交易是路径 - 我真的不明白如何设置它。无论如何，希望它能帮到你。

Answer 4

您的错误在这里：

filename = file['filename']

应该是：

filename = file.name

Answer 5

改变这个：

fd.write(file['content'])

到

fd.write(file.read())

Django表单我无法保存图片文件

5 个答案: