Python redirect (with delay)

Question

So I have this python page running on flask. It works fine until I want to have a redirect.

@app.route("/last_visit")
def check_last_watered():
    templateData = template(text = water.get_last_watered())
    return render_template('main.html', **templateData)
    return redirect(url_for('new_page')) #with a delay here of 3 secs

The site works fine, but does not redirect and I wouldn't know how to delay the whole thing. Ideas... Please :-)

Answer 1

Well, your function just returns a rendered template and never reaches the redirect statement. If you want to show a page AND then do a redirect after a delay, use a javascript redirect in your template:

@app.route("/last_visit")
def check_last_watered():
    templateData = template(text = water.get_last_watered())
    templateData['redirect_url'] = url_for('new_page')
    return render_template('main.html', **templateData)

Then in your main.html:

<script>
    setTimeout(function(){
        window.location.href = '{{redirect_url}}';
    }, 2000);
</script>

UPDATE: Also, have a look at an alternative (and possibly better) way by Adrián, where you can return a Refresh header along with your rendered template response.

Answer 2

If you need to render a template and redirect after three seconds you can pass refresh as time and url with the URL you need to redirect.

@app.route('/error/', methods=['GET'])
def error():
    return render_template('error.html'), {"Refresh": "1; url=https://google.com"}