before send to remote

upload/templates/upload.html

@@ -0,0 +1,13 @@
+{% block content %}
+
+<form action="{% url 'upload:upload' %}" method="post" enctype="multipart/form-data">
+    {% csrf_token %}
+    <input type="file" name="image_file">
+    <input type="submit" value="submit" />
+</form>
+
+{% if image_url %}
+<p>File uploaded at: <a href="{{ image_url }}">{{ image_url }}</a></p>
+{% endif %}
+
+{% endblock %}