这是我的第一个 python 应用程序,我正在关注本教程。https://scotch.io/tutorials/build-a-crud-web-app-with-python-and-flask-part-one。我在表单上输入的信息似乎有问题,显示在网页上,所有字段都工作正常,除了“课程”和“讲师”。我试图更改表格/模型,但这没有奏效。这是我的views.py页面的一部分@admin.route('/tasterdays/add', methods=['GET', 'POST'])@login_requireddef add_tasterdays():"""Add a Tasterday to the database"""check_admin()add_tasterdays = Trueform = TasterDayForm()if form.validate_on_submit(): tasterdays = TasterDay(name=form.name.data, description=form.description.data, date=form.date.data, course=form.course.data, lecturer=form.lecturer.data) try: # add tasterday to the database db.session.add(tasterdays) db.session.commit() flash('You have successfully added a new Taster Day.') except: # in case tasterday already exists flash('Error: Taster Day already exists.') # redirect to tasterdays page return redirect(url_for('admin.list_tasterdays')) # load tasterdays template return render_template('admin/tasterdays/tasterday.html', action="Add", add_tasterdays=add_tasterdays, form=form, title="Add Taster Day")当我course=form.course.data, lecturer=form.lecturer.data从if form.validate_on_submit():表单中删除提交时,表格会用“无”填充这些部分。当我保留这些时,表格上说这个品尝日已经存在,即使它不存在。这是我的表/模型的 3/4:class Course(db.Model):"""Create a courses table"""__tablename__ = 'courses'id = db.Column(db.Integer, primary_key=True)name = db.Column(db.String(60), unique=True)description = db.Column(db.String(200))students = db.relationship('Student', backref='Course', lazy='dynamic')def __repr__(self): return '<Course: {}>'.format(self.name)class TasterDay(db.Model):"""Create a tasterdays table"""__tablename__ = 'tasterdays'
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