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zjpb.net/migrations/make_slug_nullable.py

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"""修改slug字段为可空的迁移脚本"""
import sys
import os
# 添加项目根目录到系统路径
sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
from app import create_app
from models import db
from sqlalchemy import text
# 创建应用上下文
app = create_app()
with app.app_context():
# 使用原生SQL修改列属性
try:
# MySQL语法修改slug列为可空
with db.engine.connect() as connection:
connection.execute(text('ALTER TABLE sites MODIFY COLUMN slug VARCHAR(100) NULL'))
connection.commit()
print("slug field successfully updated to nullable!")
except Exception as e:
print(f"Migration failed: {str(e)}")
print("Note: If the field is already nullable, you can ignore this error.")