By default, django-ajax-uploader with s3 backend gives a MalformedXML error

Question

I installed the test script in much the same way as in the example: https://github.com/GoodCloud/django-ajax-uploader

It seems to start loading the file (javascript updates the name and size of the file), but the view gives me a 500 error with this message. I can not find anything on how to fix this.

S3ResponseError: S3ResponseError: 400 Bad Request <Error><Code>MalformedXML</Code><Message>The XML you provided was not well-formed or did not validate against our published schema</Message><RequestId>26E6EF8296A0E585</RequestId><HostId>F4QUOsVT4LxC+6OUP2lE1/9uPC77keOejyWs57GpS5kjvHXpun3U+81ntL8ZTgDa</HostId></Error> 

I managed to upload the file in the shell using boto using the commands here: Upload a 0-byte file to Amazon S3

View:

 from ajaxuploader.views import AjaxFileUploader from ajaxuploader.backends.s3 import S3UploadBackend import_uploader = AjaxFileUploader(backend=S3UploadBackend) 

JavaScript:

 var uploader = new qq.FileUploader({ action: "/ajax/profile-upload/", element: $('#file-uploader')[0], multiple: true, onComplete: function(id, fileName, responseJSON) { if(responseJSON.success) { alert("success!"); } else { alert("upload failed!"); } }, onAllComplete: function(uploads) { // uploads is an array of maps // the maps look like this: {file: FileObject, response: JSONServerResponse} alert("All complete!"); }, params: { 'csrf_token': $('[name=csrfmiddlewaretoken]').val(), 'csrf_name': 'csrfmiddlewaretoken', 'csrf_xname': 'X-CSRFToken', }, }); 

template:

 <div id="file-uploader"> <noscript> <p>Please enable JavaScript to use file uploader.</p> </noscript> </div> 

I have s3 access variables in the settings.py file (they are called in ajaxuploader / backends / s3.py file):

 AWS_ACCESS_KEY_ID = myAccessKey AWS_SECRET_ACCESS_KEY = mySecretKey AWS_BUCKET_NAME = bucketName 

Answer 1

I solved this problem with a custom s3 backend that overrides the download function and uses django storages instead of boto to save files. try the following:

 from ajaxuploader.backends.base import AbstractUploadBackend from django.core.files.storage import default_storage class S3CustomUpload(AbstractUploadBackend): NUM_PARALLEL_PROCESSES = 4 def upload_chunk(self, chunk): #save file to s3 self._fd.write(chunk) self._fd.close() def setup(self, filename): self._fd = default_storage.open('%s/%s' % ('uploads/materials/', str(filename)), 'wb') def upload(self, uploaded, filename, raw_data, *args, **kwargs): try: if raw_data: # File was uploaded via ajax, and is streaming in. chunk = uploaded.read(self.BUFFER_SIZE) while len(chunk) > 0: self.upload_chunk(chunk, *args, **kwargs) chunk = uploaded.read(self.BUFFER_SIZE) else: # File was uploaded via a POST, and is here. for chunk in uploaded.chunks(): self.upload_chunk(chunk, *args, **kwargs) return True except: # things went badly. return False def upload_complete(self, request, filename, *args, **kwargs): upload = Upload() upload.upload = settings.S3_URL + "uploads/materials/"+ filename upload.name = filename upload.save() return {'pk': upload.pk}