How to use goog.net.IframeIo to upload a file to Blobstore in Python?

[Mohit Chilkoti]

Hi Everyone,

Here I am trying to upload a file asynchronously to the blobstore. Below is what I've done so far:

html file

<form id="my_form" enctype="multipart/form-data" method="POST"
      action="/partner">
  <input type="file" id="my_file" name="my_file"/>
</form>

js file

my.Project.prototype.onFileUpload = function(e) {
  var uploadForm = /** @type {HTMLFormElement} */ (
          goog.dom.getElement('my_form'));
  var iframeIo = new goog.net.IframeIo();
  goog.events.listen(iframeIo, goog.net.EventType.COMPLETE, function() { alert('request complete'); });
  iframeIo.sendFromForm(uploadForm);

python code
class MyHandler(blobstore_handlers.BlobstoreUploadHandler):
  def post(self):
    logging.info(self.request)   // I can see my file in this line's output
    upload_files = self.get_uploads('my_file')
    logging.info(upload_files)  //upload_files come out to be an empty array
    blob_info = upload_files[0]
    self.redirect('/partner/serve/%s' % blob_info.key())

Any pointers on how to get the file to be uploaded from the request object.

The python code provided by google's tutorial on BlobStore can be found here.

Now I am stuck. I believe if I can get the file in python code I'll be able to upload it.
Any pointers will be very helpful.
Thanks,
Mohit

[alex]

BlobstoreUploadHandler will probably work best with create_upload_url("/partner") - that's what you want to set in <form action="...">

- try that and see if it works.