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 Django Class-based Views Classy Views CRUDs

Benjamin Hobbs
Benjamin Hobbs
15,195 Points
Posted by Benjamin Hobbs
Benjamin Hobbs
15,195 Points

Why does this code fail, and worse breaks task 2 of 3? I've tried it a few different ways and none of them works.

Have tried with and without the pk, blocks, reverse_lazy - also if I delete the entirety of my delete template the second task still fails, so maybe it's a bug?

articles/views.py 
from django.views.generic import ListView, DetailView, CreateView, UpdateView, DeleteView

from . import models


class ArticleList(ListView):
    model = models.Article


class ArticleDetail(DetailView):
    model = models.Article

crud_fields = ('title', 'body', 'author', 'published')

class ArticleCreate(CreateView):
    fields = crud_fields
    model = models.Article    

class ArticleUpdate(UpdateView):
    fields = crud_fields
    model = models.Article    

class ArticleDelete(DeleteView):
    fields = crud_fields
    model = models.Article
articles/templates/articles/article_form.html 
{% block body_content %}

<form method='POST'>
    {% csrf_token %}
    {{ form.as_p }}
    <input type='submit' class="btn btn-primary" value='Save'>
</form>

{% endblock %}
articles/templates/articles/article_confirm_delete.html 
{% block body_content %}
<h1>{{ article.title }}</h1>
<form method='POST'>
    {% csrf_token %}
    <input type="submit" class="btn btn-danger" value="Delete"> <a href="
      {% url 'articles:detail' pk=article.pk %}">Cancel</a>
</form>
{% endblock %}

1 Answer

sekrantz
sekrantz
10,469 Points
sekrantz
sekrantz
10,469 Points

I just ran into this problem as well. It seems the task writeup fails to mention the articles:detail url requires pk=articles.pk, and you also have to specify the success_url field for the ArticleDelete class.

Here's my passing template:

<h1>{{ article.title }}</h1>
<form method="POST">
  {% csrf_token %}
  <input type="submit" value="Delete">
  <a href="{% url 'articles:detail' pk=article.pk %}">Cancel</a>
</form>

and the DeleteView:

from django.core.urlresolvers import reverse_lazy

### other stuff

class ArticleDelete(DeleteView):
    model = models.Article
    success_url = reverse_lazy('articles:detail')