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# -*- coding: utf-8 -*-
from __future__ import unicode_literals
from django.core.files import File
import os
def migrate_simple_image_to_m2m(base_model, image_model, rel_model,
verbose=False):
missing, moved = 0, 0
for item in base_model.objects.all():
if not item.image:
continue
image_instance = image_model.objects.create()
try:
image_instance.image.save(
os.path.basename(item.image.path),
File(open(item.image.path))
)
image_instance.thumbnail.save(
os.path.basename(item.thumbnail.path),
File(open(item.thumbnail.path))
)
except IOError:
# image not on hard-drive
item.image = None
item.thumbnail = None
item.save()
image_instance.delete()
missing += 1
continue
image_instance.save()
rel_model.objects.create(item=item, image=image_instance, is_main=True)
# clean
item.image = None
item.thumbnail = None
item.save()
moved += 1
if verbose:
print("")
print(base_model)
print("{} missing".format(missing))
print("{} moved".format(moved))
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