54 lines
1.4 KiB
Python
54 lines
1.4 KiB
Python
from model.teacher_model import Teacher
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def add_teacher_dao(t,db):
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try: #判断是都已存在
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r = db.query(Teacher).filter(Teacher.teacher_id==t['teacher_id']).first()
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if r:
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return None #已存在，交给上层判断
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obj = Teacher(**t)
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db.add(obj)
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db.commit()
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db.refresh(obj) #拿回自增id，create_time等
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return obj
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except Exception:
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db.rollback()
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return False
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def update_teacher_dao(teacher_id,data,db): #data:新增的内容
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try: #数据更新有返回值，返回的是影响的行数
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rows = db.query(Teacher).filter(Teacher.teacher_id == teacher_id).update(data)
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db.commit()
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return rows
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except Exception:
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db.rollback()
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return False
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def get_teacher_dao(teacher_id=None,teacher_name=None,db=None):
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q = db.query(Teacher)
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if teacher_id:
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q = q.filter(Teacher.teacher_id==teacher_id)
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if teacher_name:
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q = q.filter(Teacher.teacher_name.like (f'%{teacher_name}%'))
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return q.all() #返回ORM对象列表
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def delete_teacher_dao(teacher_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(Teacher)
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.filter(Teacher.teacher_id == teacher_id)
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.delete())
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db.commit()
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return rows
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except Exception:
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db.rollback()
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return 0
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