If a user selects an arena from the list and pushes the Find Data button, the HTML form issues a POST request to the view. With the if conditional resolving to True, the view handles the request by generating an arena location coordinate pair and a custom popup, instead of using a default coordinate pair and popup value:
if request.method == "POST": arena_id = form.selections.data arena = session.query(Arena).get(arena_id) form.longitude = round(arena.longitude,4) form.latitude = round(arena.latitude,4)
The property form.selections.data is used to retrieve the id of the arena chosen from the list and is passed to a variable called arena_id. This id is then used to query the database through the SQLAlchemy ORM's get method. ...
