render_template is a Flask function that renders a named HTML template with context data and returns the resulting page content. A route handler typically fetches data, passes it with a keyword such as data=data, and returns the rendered template. section 5.3.5
Render database results
from flask import Flask, render_template app = Flask(__name__) @app.route('/') def index(): data = questions.fetch_data() return render_template('index.html', data=data) The index.html template can iterate over data with a Jinja loop and display each item. This separates database retrieval from page presentation. section 5.3.5
Use render_template in a Flask page workflow:
- Place the target template where Flask expects it: the templates folder at the application root by default. section 5.3.3
- Run the page and inspect errors rather than accepting generated imports or file layouts without validation. section 5.3.3
