AttributeError: 'file' object has no attribute '_committed'

Question

I have a DjangoFileField in my model. I am trying to convert the type of the audio from that FielField to mp3 and then again trying to save it. But after converting the type and exporting it using pydub it is returning the following error

AttributeError: 'file' object has no attribute '_committed'

My code is like this

def get_from_function(AudioSegment, format):

    form = "from_{0}".format(format)
    print form
    if hasattr(AudioSegment, form):
        return getattr(AudioSegment, form)
    return None


    audio = request.FILES.get('audio', None)
    if audio:
        name_list = audio.name.rsplit(".")
        voice_format =name_list[1]
        from_format = get_from_function(AudioSegment, voice_format)
        if from_format and callable(from_format):
            sound = from_format(audio)
            audio = sound.export("media/{0}".format(name_list[0]), mp3")

when i print the audio it prints

<open file 'media/barsandtone', mode 'wb+' at 0x7f771e5e2f60>

and when i print the type of file it prints

<type 'file'>

but when i assign the audio field to django model like

Mymodel.objects.create(audio=audio)

it gives error

AttributeError at /create/
'file' object has no attribute '_committed'

What is the correct way to save the exported file into django model

Answer 1

django needs a ContentFile usually to do this passing it a stream of data, and it doesn't work the way you usually pass arguments to a model. The proper way to do this is the following

from django.core.files.base import ContentFile
[...]
mymodel = Mymodel()
mymodel.audio.save(audio.name, ContentFile(audio.read()))

don't forget to pass the stream to ContentFile. Django won't raise any errors if you pass it ContentFile(audio) but in that case you won't save the file content..