Created
May 8, 2021 22:32
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Using Django post_migrate signal
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###################################### | |
############# models.py ############## | |
###################################### | |
from architect.commands import partition | |
from django.db import ProgrammingError | |
def create_partitions(sender, **kwargs): | |
""" | |
After running migrations, go through each of the models | |
in the app and ensure the partitions have been setup | |
""" | |
paths = {model.__module__ for model in sender.get_models()} | |
for path in paths: | |
try: | |
partition.run(dict(module=path)) | |
except ProgrammingError: | |
# Possibly because models were just un-migrated or | |
# fields have been changed that effect Architect | |
print(f"Unable to apply partitions for module '{path}'") | |
else: | |
print(f"Applied partitions for module '{path}'") | |
###################################### | |
############# apps.py ################ | |
###################################### | |
from django.apps import AppConfig | |
from django.db.models.signals import post_migrate | |
from .models import create_partitions | |
class CoreConfig(AppConfig): | |
name = 'core' | |
def ready(self): | |
# Hook up Architect to the post migrations signal | |
post_migrate.connect(create_partitions, sender=self) |
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