MyIndexView error in theme example does not work in Flask-AppBuilder - flask-appbuilder

Question

I implemented steps 1, 2 and 3 from the "Changing the index" section of this page https://flask-appbuilder.readthedocs.io/en/latest/customizing.html?highlight=theme.
I get the following error:
\app__init__.py", line 4, in
from app.index import MyIndexView
ImportError: cannot import name 'MyIndexView'
I have made these changes to a barebone Flask-AppBuilder app.
The code is exactly as is shown on the site.
I expect the example to work as described. But I receive the message I posted above when I run it.

Answer 1

Your index.py should look like this(base version).
# Import flask functions for redirecting and getting user status
from flask import g, url_for, redirect
# Import IndexView class to overwrite files/redirects and expose to expose custom index view
from flask_appbuilder import IndexView, expose
# File to display custom made different views based off if user is signed
class MyIndexView(IndexView):
# Checking user and redirecting for user when user goes to index view
#expose('/')
def index(self):
# Get user status
user = g.user
# Check user
if user.is_anonymous:
# user is not authenticated and gets redirected to New user page
return redirect(url_for('HomeView.new'))
else:
# user is authenticated and has an account redirect to General page
return redirect(url_for('HomeView.general'))
Then in your views.py create a simle view like this
# Views for any home paths
class HomeView(BaseView):
# add route base for views as /home
route_base = "/home"
# Route for new or logged out users
#expose('/new')
def new(self):
return self.render_template('new_user.py')
# Route for signed in users or users who want to just view data
#expose('/general')
def general(self):
return self.render_template('my_index.py')
Also, make sure to add it to your appbuilder object in your init.py
appbuilder = AppBuilder(app, db.session, indexview=MyIndexView)