CODEWITHSUNDEEP
djangodjango-urls
chobo
chobo

Reputation: 4862

I don't know when to use reverse() in django.core.urlresolvers module

I finished reading the documentation for the reverse() method of the Django URL dispatcher.

When is it useful?

Thank you!

Upvotes: 1

Views: 4643

Answers (3)

Aidan Ewen
Aidan Ewen

Reputation: 13328

The function supports the dry principle - ensuring that you don't hard code urls throughout your app. A url should be defined in one place, and only one place - your url conf. After that you're really just referencing that info.

Use reverse() to give you the url of a page, given either the path to the view, or the page_name parameter from your url conf. You would use it in cases where it doesn't make sense to do it in the template with {% url 'my-page' %}.

There are lots of possible places you might use this functionality. One place I've found I use it is when redirecting users in a view (often after the successful processing of a form)- 

return HttpResponseRedirect(reverse('thanks-we-got-your-form-page'))

You might also use it when writing template tags.

Another time I used reverse() was with model inheritance. I had a ListView on a parent model, but wanted to get from any one of those parent objects to the DetailView of it's associated child object. I attached a get__child_url() function to the parent which identified the existence of a child and returned the url of it's DetailView using reverse().

Upvotes: 6

James Ezechukwu
James Ezechukwu

Reputation: 627

The reverse() function is used in django to achieve DRY compliant urls in your views. Find a clearer explanation here

Upvotes: 3

Ignacio Vazquez-Abrams
Ignacio Vazquez-Abrams

Reputation: 798884

It's used when you want to resolve a view by name along with arguments to a URL in code. It's the backend for the {% url %} template tag.

Upvotes: 2

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