I have an issue with DRF file naming. The file of interest (I believe) is
serializers.py. What I want to occur when I upload a file is a creation of
a directory in the upload_to directory when the id of the object becomes
available. This is simple to do overriding the create method. What I have
not figured out how to do is to update the file in the database to reflect
the new path. It is easy to change the file to a string containing the
desired path for instance, but it is difficult to change the file to the
file with the desired path.
P.S. I am aware I am obscuring the file keyword. If necessary I will change
it.
Enter code here...
# models.py class TestFile(Model):
file = FileField(storage=FileSystemStorage(location=settings.MEDIA_ROOT),
upload_to='files', default='{}/files/empty.zip'.format(settings.MEDIA_ROOT))
created_at = CreationDateTimeField()
updated_at = ModificationDateTimeField()
def __str__(self):
return ''.join([str(self.file)])
def __unicode__(self):
return unicode(' '.join([str(self.id)]))
def __id__(self):
return str(self.id)
class Meta:
managed = True
db_table = 'test_files'
verbose_name_plural = 'Test Files'
# viewsets.pyclass TestFileViewSet(ModelViewSet):
queryset = TestFile.objects.all()
serializer_class = TestFileSerializer
parser_classes = (MultiPartParser, FormParser)
def perform_create(self, serializer):
serializer.save(file=self.request.data.get('file')
# serializers.pyclass TestFileSerializer(ModelSerializer):
file = serializers.FileField(required=True)
def create(self, validated_data):
# Calling create(), this will create the object in the database, making
the ID and PK of obj
# available to me.
obj = TestFile.objects.create(**validated_data)
# Creating a new path so that I can use a detail_route in viewset later
to GET file
new_path = '/'.join ([str(obj.file).split('/')[0],
str(obj.id),
str(obj.file).split('/')[1]])
# Try to create the parent directory of our destination. This shouldn't
fail
try:
os.mkdir(settings.MEDIA_ROOT+ '/files/' +str(obj.id), 0755 )
except:
pass
# Move old file to the new path that we just created.
shutil.copyfile(settings.MEDIA_ROOT + str(obj.file),
settings.MEDIA_ROOT + new_path)
# Remove the old file after we have already copied it to new destination
os.rmdir(settings.MEDIA_ROOT + str(obj.file))
# This is where the next step goes!
# What do I need to put in here to make obj.file the correct path now?
return obj
class Meta:
model = TestFile
fields = ( 'id','file','created_at','updated_at')
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