python - Django failed to consider image -

i'm trying make user upload image file , should automatically converted base64 string.

so input form looks like,

<form role="form" method="post" action="{% url 'guideform-edit' object.pk %}"               class="post-form form-horizontal">{% csrf_token %}             <!-- customizing form -->             {{ form|crispy }}             <!-- end of customization -->             <div style="position:relative;">                 <a class='btn btn-primary' href='javascript:;'>                     choose file...                     <input type="file"                            style='position:absolute;z-index:2;top:0;left:0;bottom:0;right:0;filter: alpha(opacity=0);-ms-filter:"progid:dximagetransform.microsoft.alpha(opacity=0)";opacity:0;background-color:transparent;color:transparent;'                            name="file_source" size="40" onchange='$("#upload-file-info").html($(this).val());'>                 </a>                 &nbsp;                 <span class='label label-info' id="upload-file-info"></span>             </div>             <button type="submit" class="save btn btn-default btn-primary center-block">update</button>          </form> 

corresponding view class like,

class guideformupdateview(updateview):     model = guide     fields = ['name', 'image', 'point_of_interest']     template_name_suffix = '_update_form'      def post(self, request, *args, **kwargs):         query_dict = request.post         img = image.open(stringio(query_dict['file_source']))         print img 

and error got is,

file "/home/avinash/django_projects/guide/src/guide/views.py" in post   166.         img = image.open(stringio(query_dict['file_source']))  file "/home/avinash/.virtualenvs/guide/local/lib/python2.7/site-packages/pil/image.py" in open   2295.                   % (filename if filename else fp))  exception type: ioerror @ /guides/edit/1 exception value: cannot identify image file <stringio.stringio instance @ 0x7f427ab4c6c8> 

i tried print query_dict variable,

print query_dict 

output got is,

{u'csrfmiddlewaretoken': u'xxxxxxxxxxx', u'name': u'pieza tower', u'file_source': u'20150706_104718.jpg'} 

so, seems gets uploaded image string , not actual image.

a couple of things here:

1. you need specify enctype="multipart/form-data" form attribute upload files

2. the file stored in request.files, not request.post

and finally, convert base64, can use module

encoded_img = base64.b64encode(filehandler.read()) 

where filehandler handler file in request.files

also, looks not have input type='file' loaded via django form. might better idea let django form handle validations dont run security issues, etc.. (you can restrict input file types, etc.. ),