There's a django app with djongo as database driver. I want to add custom migration using RunPython. But I can't understand how to reach pymongo client. Here's the code:
from django.db import migrations
def _custom_migration(apps, schema_editor):
db = ... # what to put here?
db.collection1.update_many({}, [{'$set': {"field2": "$field1.id"}}])
class Migration(migrations.Migration):
operations = [
migrations.RunPython(_custom_migration),
]
You can reach PyMongo:
MongoClient instance) from schema_editor.connection.client_connection.Database instance) from schema_editor.connection.connection.def _custom_migration(apps, schema_editor):
db = schema_editor.connection.connection
db.collection1.update_many({}, [{'$set': {"field2": "$field1.id"}}])
Source references:
schema_editor.connection holds the DatabaseWrapper instance.DatabaseWrapper.client_connection holds the MongoClient instance.(Base)DatabaseWrapper.connection holds the Database instance.