52 lines
1.4 KiB
Python
52 lines
1.4 KiB
Python
from day22.model.order_model import Order,User
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def add_student_dao(o,db):
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try:
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r = db.query(User).filter(User.id == o['userid']).all()
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if r:
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o1 = Order( **o) # 将字典解析成键值对关键字参数输入 title = xxx, userid = XXX
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db.add(o1)
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else:
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raise ValueError
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except:
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db.rollback()
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return False
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else:
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db.commit()
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return True
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def update_orders_dao(id,update_data,db):
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try: # 数据更新是有返回值的，返回的是影响的行数
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rows = db.query( Order ).filter( Order.id == id ).update( update_data )
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except:
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db.rollback()
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return False
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else:
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db.commit()
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return rows
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def get_orders_dao(id,order_title,db,page,page_size):
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q = db.query(Order)
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if id:
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q = q.filter( Order.id == id )
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if order_title:
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q = q.filter( Order.title == order_title )
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r = q.offset( (page-1)*page_size ).limit( page_size ).all()
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if r:
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return [{"order_id": i.id, 'order_title': i.title, "user_id": i.userid, "create_date": i.create_date,
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"update_date": i.update_date} for i in r]
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def delete_orders_dao(id,db):
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try: # 删除有返回值，删除的行数
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rows = db.query(Order).filter(Order.id == id).delete()
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except:
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db.rollback()
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rows = 0
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else:
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db.commit()
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finally:
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return rows |