redirect while passing arguments

Question

In flask, I can do this:

render_template(\"foo.html\", messages={\'main\':\'hello\'})

And if foo.html contains {{ messages[\'main\']

Answer 1

I want to mention that url_for cannot be used until it is added to the flask imports!

I spent an hour trying to find out why it would not work as no one mentioned that in several websites!!!

Add url_for to the list of imports like this:

from flask import Flask, render_template, request, redirect, session, url_for