如何在flask-sqlalchemy orm模式下獲得自動增量ID

Question

我用flask sqlalchemy orm添加了一條記錄，但是如何獲取id字段？

from sqlalchemy.sql.sqltypes import Integer, String 
from sqlalchemy.sql.schema import Column 
from flask_sqlalchemy import SQLAlchemy 

db = SQLAlchemy() 

class Table(db.Model): 
    __tablename__ = 'example' 
    id = db.Column(Integer, primary_key=True) 
    name = db.Column(String(2000)) 

person = Table() 
person.name = 'peter' 

db.session.add(person) 

Answer 1

應將Autocommit設置爲此事務的默認值。

裁判http://docs.sqlalchemy.org/en/latest/core/connections.html#sqlalchemy.engine.Connection.execution_options.params.autocommit

http://docs.sqlalchemy.org/en/latest/core/connections.html#understanding-autocommit

假設自動提交是，你必須查詢您的表並選擇ID字段。

result = session.query(person).filter_by(name='peter').first() 

print result.id