i have the model:

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)  

objects = OpenCvManager()

the form:

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

and the view:

 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))  

but i don't seem to save the picture in my database... something is wrong, and i can't figure out what :(