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from pydantic.main import BaseModel
from beanie import Document, iterative_migration
class Tag(BaseModel):
color: str
name: str
class Note(Document):
title: str
tag: Tag
class Settings:
name = "notes"
class Forward:
@iterative_migration()
async def change_title(self, input_document: Note, output_document: Note):
if input_document.title == "2":
output_document.title = "two"
class Backward:
@iterative_migration()
async def change_title(self, input_document: Note, output_document: Note):
if input_document.title == "two":
output_document.title = "2"
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