如何将数据库 ID 从 flask html 传递到带有 python 的帖子表单中

Question

UPDATE: I think my question is too confusing. To sum it up without all of the junk below. How can I pass a parameter in an HTML link into the POST function of my python file? I need that HTML parameter to be part of my commit to the database. My searching so far has not been successful.

I have populated an html page event_details.html with all the table events entries that have a matching id for table events_id row. In this page, I then have a link button to add another html page add_events_details.html to add a new entry to the database.

This link takes the user to another page with a wtform and I would like to pass the form the same events_id database row that is being matched to save the user entering this data.

So, the setup is, I pass the event_id of the entry to the add_events_details.html . But I can only pass this event_id to the get and not the post function, and it is in the post function where I need the event_id data so I can add it to the database.

How can I pass that event_id into my views.py post function so I can then add it to the database? Thank you in advance.

event_details.html

<div class="jumbotron">
    {% if current_user.is_authenticated %}
    <h1>{{ current_user }}</h1>
    <p> This is the event details page </p>
    <a href="{{url_for('events.add_event_details', event_id=event_id)}}" class="btn btn-outline-primary" role="button">Add Schedule</a>
</div>      
....more code... to show entries

add_event_details.html

<div class="jumbotron">
    {% if current_user.is_authenticated %}
    <h1>{{ current_user }}</h1>
    <p> This is the event details page </p>
    <a href="{{url_for('events.add_event_details', event_id=event_id)}}" class="btn btn-outline-primary" role="button">Add Schedule</a>
</div>      

And the views.py is

class AddEventDetailsView(MethodView):

    decorators = [login_required]
    template_file = 'add_event_details.html'
    form_class = EventForm

    def get(self, event_id):
        return render_template(self.template_file, form=self.form_class())

    def post(self):
        form = self.form_class()
        print(form.errors)

        if form.validate_on_submit():
            #  I added this print to find out its type
            print(type(form.events_id.data))
            # This form returns the class model, so I just have to ask it for the \
            #  specific column that I want it to return

            # events_id = form.events_id.data.id
            user_id = current_user.id # This assumes that the person logged in is the company
            eventdetails = Eventdetails(
                schedule_name=form.schedule_name.data,
                event_id=event_id,
                user_id=user_id,
                naics=form.naics.data
            )
            print(f"The user id is {user_id}")
            db.session.add(eventdetails)
            db.session.commit()
            flash("Thank you for registering your event.")
            return redirect(url_for('events.event_details', event_id=event_id))

Answer 1

I think I figured this out. I can just pass the same parameter into my POST request and use it that way and it works fine.

So, instead of

def get(self, event_id):

I just can do

def post(self, event_id):