getting a "UndefinedError: 'tacos' is undefined" in the tacocat challenge.

Question

In the tacocat challenge any time I try to load the main page I get a Undefined Error: tacos is undefined. I'm not 100% done but its hard to go further because its hard to check progress if you can't see what the home page looks like. I'm not exactly sure what variable tacos represents.I guessed it represents the Taco class in the login. I attached the code below.

(Also the login, logout, register and post pages work.)

tacocat.py

@app.route('/')
def index():
    tacos = models.Taco.select().limit(100)
    return render_template('index.html', index=index)


@app.route('/new-taco', methods=('GET', 'POST'))
@login_required
def tacos():
    form = forms.TacoForm()
    if form.validate_on_submit():
        models.Taco.create(user=g.user._get_current_object(),
                            protein=form.protein.data.strip(),
                            shell=form.shell.data.strip(),
                            cheese=form.cheese.data.strip(),
                            extra=form.extra.data.strip())
        return redirect(url_for('index'))
    return render_template('taco.html', form=form)

forms.py

    class TacoForm(Form):
    protein = StringField("What type of protein is in your taco? Beans? Beef?", validators=[DataRequired()])
    shell = StringField("What type of shell is your taco?", validators=[DataRequired()])
    cheese = StringField("Does it have cheese?", validators=[
            DataRequired()
        ])
    extras = TextAreaField("Add any other detail.", validators=[DataRequired()])

models.py

class Taco(Model):
    timestamp = DateTimeField(default=datetime.datetime.now)
    user = ForeignKeyField(
        rel_model=User,
        related_name='posts'
    )
    protein = CharField()
    shell = CharField()
    cheese = CharField()
    extras = TextField()

    class Meta:
        database = DATABASE
        order_by = ('-timestamp',)

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 -->
                {{ taco.protein }}
                {{ taco.cheese }}
                {{ taco.shells }}
                {{ taco.extras }}
            </tr>
        {% endfor %}
          </tbody>
        </table>
    {% else %}
        <!-- message for missing tacos -->
        <p>Sorry the site is new and empty pleases add and help us start our site!</p>
    {% endif %}
{% endblock %}

Answer 1 · 2016-02-25T06:25:54Z

February 25, 2016 6:25am

Can you be very specific to what you are doing when you get be error and can you provide the detailed error message you are seeing?

In tacocat.py above the indentation if the index view is off. It needs to be unindented.

Also in the index view, the value of tacos is defined but not passed to the rendered template. If the template accesses {{ tacos }} it might raise the error.

@app.route('/')
def index():
    tacos = models.Taco.select().limit(100)
    return render_template('index.html', index=index, tacos=tacos)

Can you post your index.html?

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Yosef Fastow

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getting a "UndefinedError: 'tacos' is undefined" in the tacocat challenge.

Yosef Fastow

Yosef Fastow

Chris Freeman

Chris Freeman

1 Answer

Chris Freeman

Chris Freeman

Chris Freeman

Chris Freeman