Question

我这里有一个很奇怪的问题。

我正在将SQLite与python和Flask + Flask-Sqlalchemy结合使用。

我正在开发具有CRUD功能的flask Web应用程序（尽管目前不需要D），我有一个models.py，routes.py，form.py，{ {1}}

table.py显示用户打算在执行更新之前（通过带有更新页面链接的烧瓶表）更新的数据。该链接在route.py文件中调用特定的更新路由。

我可以通过终端和烧瓶形式向/从我的SQLite表添加/读取数据，没有问题，分配后，我也可以使用dB.session.commit通过终端直接在SQLite表中更新数据。新值覆盖旧值。但是，当通过烧瓶表单尝试使用与终端使用的更新路径和表单值相同时，更新将失败。

form.py

table.py

models.py

class SearchResultForm(FlaskForm):
    agreement_no = StringField('Agreement No')
    product = StringField('Product')
    manufacturer = StringField('Manufacturer')
    model = StringField('Model')
    vehicle_age = StringField('Vehicle Age')
    centre = StringField('Centre')
    company = StringField('Company')
    title = StringField('Title')
    first_name = StringField('First Name')
    middle_name = StringField('Middle Name')
    last_name = StringField('Last Name')
    contact_no = StringField('Contact No')
    email = StringField('Email Address ')
    adviser = StringField('Adviser')
    complaint_no = StringField('Complaint No')
    complaint_status = SelectField('Complaint Status', validators=[DataRequired()]
                                   , choices=complaint_status_choices, default=complaint_status_choices[0])
    complaint_group = StringField('Complaint Group')
    complaint_source = StringField('Complaint Source')
    complaint_narrative = TextAreaField('Complaint Narrative')
    severity = SelectField('Severity', validators=[DataRequired()], choices=severity_choices, default=severity_choices[0])
    date_received = DateTimeField('Date Received')
    reg_due_date = DateTimeField('Reg. Due Date')
    date_modified = DateTimeField('Date Modified', validators=[DataRequired()], default=dt.utcnow)
    date_acknowledged = DateTimeField('Date Acknowledged', format='%d/%m/%Y', default=dt.utcnow)
    date_escalated = DateTimeField('Date Escalated', format='%d/%m/%Y', default=dt.utcnow)
    company_outcome = SelectField('Company Outcome', choices=company_outcome_choices, default=company_outcome_choices[0])
    regulatory_outcome = SelectField('Regulatory Outcome', choices=regulatory_outcome_choices,
                                  default=regulatory_outcome_choices[0])
    regulatory_reportable = SelectField('Regulatory Reportable'
                                        , choices=yes_no_choices, default=yes_no_choices[0])
    goodwill_offered = SelectField('Goodwill Offered', choices=yes_no_choices, default=yes_no_choices[0])
    goodwill_reason = StringField('Goodwill Reason')
    goodwill_method = StringField('Goodwill Method')
    goodwill_narrative = TextAreaField('Goodwill Narrative')
    goodwill_amount = IntegerField('Goodwill Amount', default=0.00)
    submit = SubmitField('Update')

routes.py

class Complaint(db.Model):
    id = db.Column(db.Integer, primary_key=True, default=complaint_id)
    complaint_group = db.Column(db.String(100), nullable=False)
    complaint_source = db.Column(db.String(60), nullable=False)
    complaint_status = db.Column(db.String(30), nullable=False)
    severity = db.Column(db.String(30), nullable=False)
    complaint_narrative = db.Column(db.Text, nullable=False)
    agreement_no = db.Column(db.String(60), nullable=True)
    product = db.Column(db.String(60), nullable=True)
    manufacturer = db.Column(db.String(60), nullable=True)
    model = db.Column(db.String(30), nullable=True)
    vehicle_age = db.Column(db.String(30), nullable=True)
    centre = db.Column(db.String(150), nullable=True)
    company = db.Column(db.String(150), nullable=True)
    title = db.Column(db.String(20), nullable=True)
    first_name = db.Column(db.String(100), nullable=True)
    middle_name = db.Column(db.String(100), nullable=True)
    last_name = db.Column(db.String(100), nullable=True)
    email = db.Column(db.String(100), nullable=True)
    contact_no = db.Column(db.String(60), nullable=True)
    date_received = db.Column(db.DateTime, default=dt.utcnow, nullable=True)
    reg_due_date = db.Column(db.DateTime, default=(dt.utcnow() + timedelta(days=56)), nullable=True)
    date_modified = db.Column(db.DateTime, default=dt.utcnow, nullable=True)
    date_escalated = db.Column(db.DateTime, default=dt.utcnow, nullable=True)
    date_acknowledged = db.Column(db.DateTime, default=dt.utcnow, nullable=True)
    company_outcome = db.Column(db.String(60), nullable=True)
    regulatory_outcome = db.Column(db.String(60), nullable=True)
    regulatory_reportable = db.Column(db.String(10), nullable=True)
    goodwill_offered = db.Column(db.String(10), nullable=True)
    goodwill_method = db.Column(db.String(60), nullable=True)
    goodwill_reason = db.Column(db.String(60), nullable=True)
    goodwill_narrative = db.Column(db.Text, nullable=True)
    goodwill_amount = db.Column(db.Integer, nullable=True)
    user_id = db.Column(db.Integer, db.ForeignKey('user.id'), nullable=False)

    def __repr__(self):
        return f"Complaint('{self.id}', '{self.complaint_group}', '{self.complaint_source}'," \
               f" '{self.complaint_status}', '{self.complaint_narrative}','{self.severity}' ,{self.date_received}," \
               f" {self.date_modified}, {self.date_acknowledged},{self.date_escalated}, " \
               f"{self.reg_due_date},'{self.manufacturer}', '{self.model}'," \
               f"'{self.vehicle_age}','{self.product}', '{self.agreement_no}'," \
               f"'{self.title}','{self.first_name}', '{self.middle_name}'," \
               f"'{self.last_name}','{self.email}', '{self.contact_no}'," \
               f"'{self.company}','{self.company_outcome}', '{self.regulatory_outcome}'," \
               f"'{self.regulatory_reportable}','{self.goodwill_offered}', '{self.goodwill_reason}'," \
               f"'{self.goodwill_method}','{self.goodwill_narrative}','{self.goodwill_amount}', '{self.user_id}')"

我遇到的错误如下：

sqlalchemy.exc.StatementError：（builtins.TypeError）SQLite DateTime类型仅接受Python datetime和date对象作为输入。 [我已经检查了对象的类型，它实际上是python datetime对象，我也曾尝试将其转换为自定义datetime对象，但没有成功]
sqlalchemy.exc.InterfaceError：（sqlite3.InterfaceError）错误绑定参数0-可能是不受支持的类型。 [我应该指出，我已经能够使用终端通过终端成功更新SQLite表表单收到的值相同]

我在这里想念什么？

环境：[Windows 10专业版+ Pycharm专业版2020.1]

通过烧瓶形式的SQLite CRUD

0 个答案: