title: Django download image from ImageField
body: <p>I'm working with Django 1.7 and Python 3.4.</p>
  
  <p>I have a model like this one:</p>
  
  <pre><code>class ImageModel(models.Model):
      image = models.ImageField(verbose_name='image', upload_to='uploaded_images/')
  </code></pre>
  
  <p>Now I want to download image which is saved in /static/uploaded_images/.
  For example I have a link like this: <code>www.example.com/image/download/1</code>, where 1 is id of ImageModel object.</p>
  
  <p>Now i have a view:</p>
  
  <pre><code>def download_image(request, image_id):
       img = ImageModel.objects.get(id=image_id)
       ( what I need to do? )
  </code></pre>
  
  <p>What next? How to create a view that will force download of that image?</p>