title: How to use s3upload to upload file directly without form?
body: <p>I'm using s3upload to upload image using admin form. How can I avoid using form for uploading (selecting file through explorer) and upload file using some method (like upload("filename.jpg"))? Is it possible?</p>
  
  <p><strong>options.py</strong></p>
  
  <pre><code>CONSTANCE_ADDITIONAL_FIELDS = {
      'image_field': ['django.forms.CharField', {
          'widget': 'myapp.apps.S3UploadWidget',
          'widget_kwargs': {'dest': 'options'},
          'required': False
      }],
  </code></pre>
  
  <p>s3upload library's <strong>views.py</strong>, which has upload logic:
  <a href="https://github.com/yunojuno/django-s3-upload/blob/master/s3upload/views.py" rel="nofollow noreferrer">https://github.com/yunojuno/django-s3-upload/blob/master/s3upload/views.py</a></p>