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Python Build a Social Network with Flask Tacocat Challenge Tacocat!

Mark Jeffreys
Mark Jeffreys
9,072 Points
Posted by Mark Jeffreys
Mark Jeffreys
9,072 Points

Why is workspace throwing a peewee.OperationalError: no such column: t1.user_id

I'm working on building the TacoCat web application, and i can't figure out why PeeWee is throwing this error when trying to open index.html: peewee.OperationalError: no such column: t1.user_id

I can't find any reference to the t1.user_id that it could are referencing. The only thing I can conceive of is that is the field in Taco used to reference the id of the user object that created the taco.

I haven't created any tacos yet, and I have the code to pull up the taco count (tacos = models.Taco.select().limit(100)), which I included in the index route, since the route was throwing errors when I tried to call index without the tacos argument. Based on the unit test, I know this is supposed to return the template with the text "No tacos yet", but I'm getting this error instead. Any help would be appreciated.

I didn't attach my code to this post since I've only done my work in the Workspace so far. Please let me know if you can help, or if you'd need to see my code before offering suggestions. Thank you.

-Mark

2 Answers

Mark Jeffreys
Mark Jeffreys
9,072 Points
Mark Jeffreys
Mark Jeffreys
9,072 Points

I found out what the problem was. I forgot to include the class Meta: database = DATABASE line for the Taco class.

Chris Freeman
MOD
Chris Freeman
Treehouse Moderator 68,454 Points
Chris Freeman
Chris Freeman
Treehouse Moderator 68,454 Points

Have you initialized your database tables for User and your other models?

# models.py
def initialize():
    DATABASE.connect()
    DATABASE.create_tables([User], safe=True)
    DATABASE.close()

# app.py
import models

if __name__ == '__main__':
    models.initialize()
Mark Jeffreys
Mark Jeffreys
9,072 Points
Mark Jeffreys
Mark Jeffreys
9,072 Points

Thank you for the suggestion, and yes I did, though I named by database variable db. Here's the redacted version of the code I used for that method:

#models.py
def initialize():
  db.connect()
  db.create_tables([User, Taco], safe=True)
  db.close()

#tacocat.py
import models

DEBUG = True
PORT = 8000
HOST = '0.0.0.0'

if __name__ == '__main__':
  models.initialize()
  try:
    models.User.create_user(
      email='ae***nt@gmail.com',
      password='password')
  except ValueError:
    pass
  app.run(debug=DEBUG, host=HOST, port=PORT)
Chris Freeman
Chris Freeman
Treehouse Moderator 68,454 Points
Chris Freeman
Chris Freeman
Treehouse Moderator 68,454 Points

Is it possible you are viewing a page that needs a user to be logged in. There may be some template code that needs to be wrapped in:

{% if current_user.is_authenticated %}
  ...
{% endif %}

If not, can you post your layout.html base and index.html templates?

Mark Jeffreys
Mark Jeffreys
9,072 Points
Mark Jeffreys
Mark Jeffreys
9,072 Points

I'm trying to access index.html, and as far as I can tell, this doesn't require a user to be authenticated. Layout.html and index.html both have the default code that was included with the workspace for this challenge.

Here's layout.html:

<!doctype html>
<html>
  <head>
    <title>Tacocat</title>
    <link rel="stylesheet" href="/static/css/normalize.css">
    <link rel="stylesheet" href="/static/css/skeleton.css">
    <link rel="stylesheet" href="/static/css/tacocat.css">
  </head>
  <body>
    {% with messages=get_flashed_messages() %}
    {% if messages %}
        <div class="messages">
          {% for message in messages %}
          <div class="message">
            {{ message }}
          </div>
          {% endfor %}
        </div>
    {% endif %}
    {% endwith %}

    <div class="container">
      <div class="row">
        <div class="u-full-width">
          <nav class="menu">
          <!-- menu goes here -->
          </nav>
          {% block content %}{% endblock %}
        </div>
      </div>
      <footer>
        <p>An MVP web app made with Flask on <a href="http://teamtreehouse.com">Treehouse</a>.</p>
      </footer>
    </div>
  </body>
</html>

And here's index.html:

{% extends 'layout.html' %}

{% block content %}
<h2>Tacos</h2>
    {% if tacos.count() %}
        <table class="u-full-width">
          <thead>
            <tr>
              <th>Protein</th>
              <th>Cheese?</th>
              <th>Shell</th>
              <th>Extras</th>
            </tr>
          </thead>
          <tbody>
        {% for taco in tacos %}
            <tr>
              <!-- taco attributes here -->
            </tr>
        {% endfor %}
          </tbody>
        </table>
    {% else %}
        <!-- message for missing tacos -->
        No tacos yet
    {% endif %}
{% endblock %}
Mark Jeffreys
Mark Jeffreys
9,072 Points
Mark Jeffreys
Mark Jeffreys
9,072 Points

I figured out what the problem was. I didn't include the class Meta for the Taco class, and I posted that as a new answer. Thank you for helping troubleshoot this!