在使用django- Cassandra -engine时，如何在cassandra中存储媒体文件的路径？

from django_cassandra_engine.models import DjangoCassandraModel
from cassandra.cqlengine import columns

class MediaFile(DjangoCassandraModel):
    file_path = columns.Text(primary_key=True)

DATABASES = {
    'default': {
        'ENGINE': 'django_cassandra_engine',
        'NAME': 'your_keyspace_name',
        'TEST_NAME': 'test_keyspace_name',
        'HOST': 'your_cassandra_host',
        'OPTIONS': {
            'replication': {
                'strategy_class': 'SimpleStrategy',
                'replication_factor': 1
            }
        }
    }
}

python manage.py migrate

from django.core.files.storage import default_storage

def upload_media_file(request):
    if request.method == 'POST' and request.FILES['file']:
        file = request.FILES['file']
        file_path = default_storage.save(file.name, file)
        
        media_file = MediaFile(file_path=file_path)
        media_file.save()
        
        return HttpResponse('File uploaded successfully.')
    else:
        return HttpResponse('File upload failed.')

def get_media_file(request, file_path):
    try:
        media_file = MediaFile.objects.get(file_path=file_path)
        file = default_storage.open(media_file.file_path)
        response = HttpResponse(file, content_type='application/octet-stream')
        response['Content-Disposition'] = 'attachment; filename="{}"'.format(file_path)
        return response
    except MediaFile.DoesNotExist:
        return HttpResponse('File not found.')