How to read an uploaded file in Google App Engine

Question

Hi I have another question in app engine. You have one form where there's one field for file upload, I need to read the uploaded file, validate it and store it into the datastore.

My question is how can I read the uploaded file?

In django I would have used request.FILES, in GAE is there anything of that sort?

I'd appreciate any help on this

score 2 · Answer 1 · edited May 23 '17 at 10:34

2

this question has been answered in Upload files in Google App Engine

the google app engine documents also explain it. http://code.google.com/appengine/docs/images/usingimages.html#Uploading

In brief, you just need to use self.request.get('name_of_file_in_the_input_form')

edited May 23 '17 at 10:34

Community

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answered May 15 '11 at 17:26

lucemia

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score 0 · Answer 2 · answered May 15 '11 at 17:39

One good example for uploading and serving files for Google App Engine is available here. There're at least 3 ways: blodproperty, blobstore write file and blobstoreuploadhandler. While blobstorehandler is not the easiest to implement I do recommend it since it's the natural choice when input is from a form. You pass the upload URL to the request object:

 self.render_template("upload.html", {
    'form': form,#optional if you have a form class
    'form_url': blobstore.create_upload_url('/fileupload'),
})

class FileUploadHandler(blobstore_handlers.BlobstoreUploadHandler):
  def post(self):         
    try:
        if self.get_uploads()[0]:
            blob_info = self.get_uploads()[0]

How to read an uploaded file in Google App Engine

2 Answers2