i'm currently learning Flask templates, but i can't undestand how to pass a variable to it. Example of my Python code:
from flask import Flask app = Flask(__name__) @app.route('/') def home(): return {"message":"on"}, 200 @app.route('/user/<string:username>') def user_profile(username): return render_template('profile.html') My profile.html:
<!DOCTYPE html> <html> <head> <title>Perfil</title> </head> <body> <h1>User: (username)</h1> </body> </html> To pass variables from Flask to a template, you need to import render_template and pass keyword arguments when calling it, then use Jinja2 templating syntax to output the value.
In app.py:
from flask import Flask, render_template app = Flask(__name__) @app.route('/') def home(): return {"message": "on"}, 200 @app.route('/user/<string:username>') def user_profile(username): return render_template('profile.html', username=username) And in profile.html:
<!DOCTYPE html> <html> <head> <title>Perfil</title> </head> <body> <h1>User: {{ username }}</h1> </body> </html> The important part is passing username=username to render_template, which makes username available in the template. In the template, use {{ username }} to display the value.
