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Python Django Basics Final Details url Tag

Posted by csj
csj
12,678 Points

Reverse for 'views.hello_world'

I get this Exception Value: Reverse for 'views.hello_world' with arguments '()' and keyword arguments '{}' not found. 0 pattern(s) tried: []

I can't figure out why, what I've missed. I'm just following along with the course videos, and I can't see a typo. No idea where to look.

From my layout.html

{% load static from staticfiles %}

<!DOCTYPE html>
<html>
    <head>
        <meta charset="utf-8" />
        <meta name="viewport" content="width=device-width" />
        <title>{% block title %}{% endblock %}</title>
        <link rel="stylesheet" href="{% static 'css/layout.css' %}" media="screen" title="stylesheet">
    </head>
    <body>
        <div class="site-container">
            <nav>
                <a href="{% url 'views.hello_world' %}">Home</a>
            </nav>  
            {% block content %}{% endblock %}
        </div>
    </body>
</html>
Cheo R
Cheo R
37,150 Points
Cheo R
Cheo R
37,150 Points

Hello Christian, can you post a snapshot of your workspace. I had this error before and it was because I had misspelled the hello_world view in the views.py file.

csj
csj
12,678 Points

Hi Cheo, sure... Here is a dump of the views.py files. https://mega.nz/#!IEBVBSzZ!VM-V70KM550HmnxV8p0Tjf7Gbv8ZMduLqXMgef-KgrI

alex novickis
alex novickis
34,894 Points

I had this problem for a while also, and my solution was to change in the urlpatterns, in urls.py

change url(r'^$', views.hello_world) to url(r'^$', views.hello_world, name='home' ),

2 Answers

afif afiam
afif afiam
82 Points

I think you're using Django 1.10.x the syntax for a URL Tag is different :

First, update the urlpattern in your main urls.py : url(r'^$', views.hello_world, name='home')

Then replace the 'views.hello_world' part of the URL Tag : <a href="{% url 'home' %}">Home</a>

Bogdan Lalu
Bogdan Lalu
6,419 Points
Bogdan Lalu
Bogdan Lalu
6,419 Points

thanks for the tip this helped me as well as I am using 1.10 :)

Liviu Cucerenco
Liviu Cucerenco
8,039 Points
Liviu Cucerenco
Liviu Cucerenco
8,039 Points

I had the same problem and the solution worked for me as well. Thank you very much.

Glenn Velupillai
Glenn Velupillai
7,697 Points
Glenn Velupillai
Glenn Velupillai
7,697 Points

Yes Afif Afiam! This does the trick! Thank you. Upvoted!

Sion Silyn Roberts
Sion Silyn Roberts
498 Points
Sion Silyn Roberts
Sion Silyn Roberts
498 Points

Me too. A big thank you, Afif. The "big button" doesn't happen so I assume the .css file needs updating too.

Alexander Joseph
Alexander Joseph
220 Points
Alexander Joseph
Alexander Joseph
220 Points

I had this problem, tried the fix and still didnt work (at least I thought it didnt)

my problem was I had commented out the obsolete django template anchor with a note saying it didnt work in 1.10. Coming from php i thought this would be fine. The error was coming from django picking up the old link from inside the comment

Greg Wienecke
Greg Wienecke
20,765 Points
Greg Wienecke
Greg Wienecke
20,765 Points

Thank you, Alexander! This was driving me crazy, I had mine commented out too and didn't know what was going wrong. Can someone explain this to me? How is Django still picking up the link inside a comment?