Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

Python Flask with SQLAlchemy Basics Creating a Basic Website with Flask Template Inheritance

Posted by Adam Fournace
Adam Fournace
5,120 Points

What is {% block link %} in jinja? I can't find any documentation on it or where it was referenced in the video.

I don't understand what the link block is or where to find information on it.

index.html 
<!-- insert code here -->
{% extends "layout.html" %}

{% block link %} <a href="">Contact</a> {% endblock %}
layout.html 
<!DOCTYPE html>
<html>
    <head>
        <meta charset="utf-8">
        <meta name="description" content="Treehouse code chalenge practice.">
        <meta name="viewport" content="width=device-width, initial-scale=1">
    </head>
    <body>
        <h1>Practice Template Inheritance</h1>
        {% block link %}{% endblock %}
    </body>
</html>
Adam Fournace
Adam Fournace
5,120 Points

I keep getting this error:

Traceback (most recent call last): File "", line 14, in test_app_code AssertionError: Regex didn't match: '\{\%[\sextnds\\'\"layou\.hm]+\%\}' not found in '\n{% block link %}\nContact\n{% endblock %}' : Your extend should start and end with curly bracket and percent symbols: {% %}

1 Answer

Jeff Muday
MOD
Jeff Muday
Treehouse Moderator 28,716 Points
Jeff Muday
Jeff Muday
Treehouse Moderator 28,716 Points

Templates can be somewhat difficult to troubleshoot. I too don't see an error with your code. Unless you somehow did not get the syntax correct in the Python app (which you did not show).

A simple three-file application works as expected-- main.py, and then in the templates directory layout.html and index.html

A bit more of your code would be helpful!

from flask import Flask, render_template
app = Flask(__name__)

@app.route('/')
def tester():
    return render_template('index.html')

app.run(debug=True)