Django Reverse with arguments '()' and keyword arguments '{}' not found

Question

Hi I have an infuriating problem.

I have a url pattern like this:

# mproject/myapp.urls.py

url(r'^project/(?P<project_id>\d+)/$','user_profile.views.EditProject',name='edit_project'),

it works fine in the browser but for testing, when I do this in the shell:

from django.test import Client
from django.core.urlresolvers import reverse

client= Client()
response = client.get(reverse('edit_project'), project_id=4)

I get the dreaded:

NoReverseMatch: Reverse for 'edit_project' with arguments '()' and keyword arguments '{}' not found.

What am I missing here?

in lastest django, reverse is imported from urls. ie from django.urls import reverse — suhailvs
– suhailvs, Commented Apr 18, 2020 at 1:17

miki725 · Accepted Answer · 2012-11-02 20:16:05Z

373

You have to specify project_id:

reverse('edit_project', kwargs={'project_id':4})

Doc here

answered Nov 2, 2012 at 20:16

miki725

27.9k17 gold badges109 silver badges122 bronze badges

Sign up to request clarification or add additional context in comments.

3 Comments

Gershom Maes Over a year ago

Could you possibly also include how to do this within a template?

miki725 Over a year ago

docs have examples

Muhammad Haseeb Over a year ago

Worked like a cham!

Srivats Shankar · Accepted Answer · 2019-01-22 16:12:36Z

26

The solution @miki725 is absolutely correct. Alternatively, if you would like to use the args attribute as opposed to kwargs, then you can simply modify your code as follows:

project_id = 4
reverse('edit_project', args=(project_id,))

An example of this can be found in the documentation. This essentially does the same thing, but the attributes are passed as arguments. Remember that any arguments that are passed need to be assigned a value before being reversed. Just use the correct namespace, which in this case is 'edit_project'.

answered Jan 22, 2019 at 16:12

Srivats Shankar

2,6041 gold badge18 silver badges19 bronze badges

Comments

serfer2 · Accepted Answer · 2022-10-27 23:12:27Z

5

Easiest way is by using kwargs with reverse() function:

from django.test import Client
from django.urls import reverse

url = reverse("edit_project", kwargs={"project_id": 4})
response = Client().get(url)

answered Oct 27, 2022 at 23:12

serfer2

2,6931 gold badge26 silver badges17 bronze badges

Comments

KRH · Accepted Answer · 2018-07-21 05:52:47Z

4

This problems gave me great headache when i tried to use reverse for generating activation link and send it via email of course. So i think from tests.py it will be same. The correct way to do this is following:

from django.test import Client
from django.core.urlresolvers import reverse

#app name - name of the app where the url is defined
client= Client()
response = client.get(reverse('app_name:edit_project', project_id=4))

edited Jul 21, 2018 at 5:52

answered Aug 21, 2015 at 16:45

KRH

1301 silver badge7 bronze badges

2 Comments

Daniel van Flymen Over a year ago

I just tried this, it doesn't work. @miki725's answer is correct.

Wim Feijen Over a year ago

I believe a brace is in the wrong place: response = client.get(reverse('edit_project', project_id=4))

blong · Accepted Answer · 2024-10-29 13:28:41Z

2

The function resolve_url is also more straightforward

from django.shortcuts import resolve_url

resolve_url('edit_project', project_id=4)

Documentation on this shortcut

edited Oct 29, 2024 at 13:28

blong

2,7138 gold badges47 silver badges114 bronze badges

answered Jun 18, 2017 at 10:28

SebCorbin

1,7311 gold badge13 silver badges24 bronze badges

3 Comments

LayneSadler Over a year ago

respectfully tried and not working for me. im going to stick with reverse. 2018 django 2

Wariored Over a year ago

@SebCorbin, literally you do not understand the resolve function. Its first parameter is a path not url_name

SebCorbin Over a year ago

@Wariored thank you for your comment, I noticed I was referring to the wrong function, and it appears it is not documented in the official documentation, only in the source code. Edited to fix this

Collectives™ on Stack Overflow

Django Reverse with arguments '()' and keyword arguments '{}' not found

5 Answers 5

3 Comments

Comments

Comments

2 Comments

3 Comments

Linked

Hot Network Questions

Collectives™ on Stack Overflow

5 Answers 5

3 Comments

Comments

Comments

2 Comments

3 Comments

Linked

Related