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c0a9ca8e9a
A prep PR to 34308. Explicitly pass the fields to be updated, This increases performance but most importantly prevents overwriting the db-saved value of "subscriber_count" field (added in an upcoming PR) with the in-memory default value of 0, since "subscriber_count" will only be updted via the db. Migrate some tests to use do_ functions instead of direclty modifying the state.
33 lines
1.1 KiB
Python
33 lines
1.1 KiB
Python
# Generated by Django 1.11.18 on 2019-02-25 12:42
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from django.db import migrations
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from django.db.backends.base.schema import BaseDatabaseSchemaEditor
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from django.db.migrations.state import StateApps
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def backfill_first_message_id(apps: StateApps, schema_editor: BaseDatabaseSchemaEditor) -> None:
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Stream = apps.get_model("zerver", "Stream")
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Message = apps.get_model("zerver", "Message")
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for stream in Stream.objects.all():
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first_message = Message.objects.filter(
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recipient__type_id=stream.id, recipient__type=2
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).first()
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if first_message is None:
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# No need to change anything if the outcome is the default of None
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continue
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stream.first_message_id = first_message.id
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stream.save(update_fields=["first_message_id"])
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class Migration(migrations.Migration):
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dependencies = [
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("zerver", "0209_stream_first_message_id"),
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]
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operations = [
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migrations.RunPython(
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backfill_first_message_id, reverse_code=migrations.RunPython.noop, elidable=True
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),
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]
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