Refresh page on POST-request

@tim-hilt wrote:

I want my Dash-App to react to external POST-requests. Right now my solution is to integrate my Dash-App with a manually created Flask-server and to make POST-requests to that server.

The requests trigger the function, however i would have to reload the page for the change to be reflected in the shown layout. I tried out flask.redirect(flask.request.url), which in theory should redirect me to the current URL, so it should refresh the page.

However, that doesn’t happen. Here is my code:

import flask
import dash
import dash_html_components as html

text_style = {
    'color': 'blue',
}

server = flask.Flask(__name__)
app = dash.Dash(__name__, server=server)

app.layout = html.Div(id='dummy', children='Test text', style=text_style)

@server.route('/test', methods=['POST'])
def req():
    print('Request triggered!')  # For debugging purposes, prints to console
    if text_style['color'] == 'blue':  # Toggle textcolor between red and blue
        text_style['color'] = 'red'
    else:
        text_style['color'] = 'blue'
    return flask.redirect(flask.request.url)  # Should redirect to current page/ refresh page

if __name__ == '__main__':
    app.run_server(debug=True)

When i make a post request (import requests; requests.post('http://127.0.0.1:8050/test')), i can see the message Request triggered! printed to the console and when i refresh the page, the textcolor changed.

How can i automate the page refreshment? Is there maybe a way, that doesn’t require a melange of Flask and Dash?

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