title: django: Cannot create bounded form with ImageField
body: <p>I have a class based view:</p>
  
  <pre><code>class RecordView(View):
      record_form = RecordForm
      record_form_data = {}
      templare = 'acquisition.html'
  
      def get(self, request, *args, **kwargs):
          fil = urllib.urlopen('/home/student/wwww.jpg')
          ddic = {'small_cover': SimpleUploadedFile('hehe.jpg', fil.read())}
          rr_form = self.record_form(self.record_form_data, ddic)
          return render(request, self.template_name, {'rr_form': rr_form,
                                                  })
  </code></pre>
  
  <p>I did this according to <a href="https://docs.djangoproject.com/en/1.7/ref/forms/api/#binding-uploaded-files-to-a-form" rel="nofollow">the docs</a>.</p>
  
  <p>But i cannot see anything on form in 'small_cover' image field.
  And after data is post <code>request.FILES</code> also give empty dictionary.</p>