Serving static html file from another directory from flask restful endpoint

Question

I have a toy REST application which is structured in a following way:

 - client/
   - css/
   - js/
   - index.html
 - server/
   - app.py
   ... some other files  which I use in app.py

app.py is a flask restful endpoint which looks like this:

app = flask.Flask('some-name')

# a lot of API end points, which look in this way
@app.route('/api/something', methods=['GET'])
def func_1():
    ...

and now I want to serve my static index html. So after looking at this, this and this, I thought that I would be able to serve it easily by adding the following lines:

@app.route('/')
def home():
    # but neither with this line
    return app.send_static_file('../client/index.html')
    # nor with this
    return flask.render_template(flask.url_for('static', filename='../client/index.html'))

I can not see my html file (logs tell me: 127.0.0.1 - - [some day] "GET / HTTP/1.1" 404 -). I know that I can move index.html in the server folder but is there a way to serve it from where it is right now?

P.S. when I added app._static_folder = "../client/" and changed my home function to return app.send_static_file('index.html') I finally started to receive my html file, but all the css/js file that are inside html are returned with 404.

Answer 1

When creating flask app, configure static_folder to your client folder.

from flask import Flask
app = Flask(__name__, static_folder="client")

Then you can access js and css on url http://localhost:5000/static/css/main.css

About your initial question. You can serve static html pages with flask like this:

@app.route('/<path:path>')
def serve_page(path):
    return send_from_directory('client', path)