Question

我对数据库驱动的应用程序和数据库ORM的了解很少，我已经在peewee https://codereview.stackexchange.com/q/210293/22943中编写了该模型

并且我希望能够使用“ Patient”表中“ Patient ID”的“ Relative”和“ PatientAttendOnVisit”外键同时更新3个表“ Patient”，“ Relative”和“ PatientAttendOnVisit”。

我直接尝试了

def add_patient_visit(data=None):
    """
    Adds new visit to clinic of patient 
    for new or follow up patient.
    """
    if not data:
        raise ValueError("Please pass the user info.")
    try:
        patient = _clinic.Patient.get(name=data["name"])
        if patient:
            print "Patient exists with same name."
        response_object = {
        "status": "fail",
        "message": "Patient already in record."
        }
        return response_object, 400
    except peewee.DoesNotExist as er:
        patient = _clinic.Patient.create(
            name=data["name"],
            townCity=data["townCity"],
            contactnumber=data["contactnumber"],
            age=data["age"],
            gender=data["gender"],
            email=data["email"],
            postalAddress=data["postalAddress"])
        relative = _clinic.Relative.create(relation=data["relation"],
            relativeName=data["relativeName"])

        attendence = _clinic.PatientAttendOnVisit.create(
            dateTimeofvisit=data["dateTimeofvisit"],
            attendtype=data["attendtype"],
            department=data["department"]
            )

但尝试这样做会给我以下错误：

返回controller.add_patient_visit（data = data）文件 “ /Users/ciasto/Development/python/clinic-backend/app/api/clinic/controller.py”，第35行，在add_ Patient_visit中 relativeName = data [“ relativeName”]）文件“ /Users/ciasto/Development/python/clinic-backend/clinic_venv/lib/python2.7/site-packages/peewee.py”，创建中的第5580行 inst.save（force_insert = True）文件“ /Users/ciasto/Development/python/clinic-backend/clinic_venv/lib/python2.7/site-packages/peewee.py”， 5727行，保存 pk_from_cursor = self.insert（** field_dict）.execute（）文件“ /Users/ciasto/Development/python/clinic-backend/clinic_venv/lib/python2.7/site-packages/peewee.py”，内线1622 返回方法（自身，数据库，* args，** kwargs）文件“ /Users/ciasto/Development/python/clinic-backend/clinic_venv/lib/python2.7/site-packages/peewee.py”，第1693行，在执行返回self._execute（数据库）文件“ /Users/ciasto/Development/python/clinic-backend/clinic_venv/lib/python2.7/site-packages/peewee.py”， _execute中的第2355行返回超级（插入，自我）。_execute（数据库）文件“ /Users/ciasto/Development/python/clinic-backend/clinic_venv/lib/python2.7/site-packages/peewee.py”， _execute中的第2118行 cursor = database.execute（self）文件“ /Users/ciasto/Development/python/clinic-backend/clinic_venv/lib/python2.7/site-packages/peewee.py”，行2724，在执行返回self.execute_sql（sql，params，commit = commit）文件“ /Users/ciasto/Development/python/clinic-backend/clinic_venv/lib/python2.7/site-packages/peewee.py”，第2718行，在execute_sql中 self.commit（）文件“ /Users/ciasto/Development/python/clinic-backend/clinic_venv/lib/python2.7/site-packages/peewee.py”，第2509行，退出 reraise（new_type，new_type（* exc_args），traceback）文件“ /Users/ciasto/Development/python/clinic-backend/clinic_venv/lib/python2.7/site-packages/peewee.py”，第2711行，在execute_sql中 cursor.execute（sql，params或（））文件“ /Users/ciasto/Development/python/clinic-backend/clinic_venv/lib/python2.7/site-packages/MySQLdb/cursors.py”，第205行，在执行中 self.errorhandler（self，exc，value）文件“ /Users/ciasto/Development/python/clinic-backend/clinic_venv/lib/python2.7/site-packages/MySQLdb/connections.py”，第36行，在defaultErrorhandler中引发errorclass，errorvalue IntegrityError：（1452，'无法添加或更新子行：外键约束失败（{clinic_backend。relative，约束relative_ibfk_1外键（{patient_id）参考文献patient（id））'）

Answer 1

我发现没什么复杂的

def add_patient_visit(data=None):
    """
    Adds new visit to clinic of patient 
    for new or follow up patient.
    """
    if not data:
        raise ValueError("Please pass the user info.")
    patient = _clinic.Patient.create(
            name=data["name"],
            townCity=data["townCity"],
            contactnumber=data["contactnumber"],
            age=data["age"],
            gender=data["gender"],
            email=data["email"],
            postalAddress=data["postalAddress"])

        relative = _clinic.Relative.create(
            patient=patient,
            relation=data["relation"],
            relativeName=data["relativeName"])

        attendence = _clinic.PatientAttendOnVisit.create(
            patient=patient,
            dateTimeofvisit=data["dateTimeofvisit"],
            attendtype=data["attendtype"],
            department=data["department"]
            )

如何在peewee的多个表中创建记录？

1 个答案: