#22436: migrations fail on custom upload_to on ImageField
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Reporter: David Binetti | Owner:
<dbinetti@…> | andrewgodwin
Type: Bug | Status: assigned
Component: Migrations | Version:
Severity: Release blocker | 1.7-beta-2
Keywords: | Resolution:
Has patch: 1 | Triage Stage: Accepted
Needs tests: 1 | Needs documentation: 0
Easy pickings: 0 | Patch needs improvement: 0
| UI/UX: 0
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Comment (by semenov):
@Althalus, a very ugly workaround for this would be:
{{{#!python
# utils/files.py
def gen_upload_to(fieldname, path, .......):
import sys
if len(sys.argv) > 1 and sys.argv[1] in ('makemigrations', 'migrate'):
return None # Hide ourselves from Django migrations
def upload_to(instance, filename):
pass # some custom logic
return upload_to
}}}
Too bad Django monitors non-db-related field attributes for no apparent
reason. It's not only upload_to. For instance, it creates a useless
migration even when a field's `help_text` is changed.
--
Ticket URL: <https://code.djangoproject.com/ticket/22436#comment:15>
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