Re: DjangoUnleashed-2.0

Hi,

I'm the author of Django Unleashed. A second edition is in the works, but it is taking some time (I'm also working on a video series).

Django 2.0 introduced a simplified system for URLs.

https://docs.djangoproject.com/en/2.0/releases/2.0/#simplified-url-routing-syntax

If you want wish to use the new syntax while following along with the examples in Django Unleashed, you have two choices.


Choice 1: replace regular expression syntax with the simplified syntax, using path matchers at the link below instead of regular expression patterns.

https://docs.djangoproject.com/en/2.0/topics/http/urls/#path-converters

In this case, the code below...

from django.conf.urls import url
...
url(r'^articles/([0-9]{4})/([0-9]{2})/([0-9]+)/$', viewCallable)

would be replaced with...

from django.urls import path
...
path('articles/<int:year>/<int:month>/<slug:slug>/', viewCallable)

Note that viewCallable is pseudocode for a function view or class-based view (viewClass.as_view()).

This involves changing every URL path (and now you know why the second edition is taking forever). Please note the new imports.


Choice 2: Use Django's new `re_path()` function instead of `url()` to fallback on original Django behavior.

In this case, the code below...

from django.conf.urls import url
...
url(r'^articles/([0-9]{4})/([0-9]{2})/([0-9]+)/$', viewCallable)

would be replaced with...

from django.urls import re_path
...
re_path(r'^articles/([0-9]{4})/([0-9]{2})/([0-9]+)/$', viewCallable)

Only the function has changed: the regex pattern has not.

Read more about that at the link below.

https://docs.djangoproject.com/en/2.0/topics/http/urls/#using-regular-expressions


I might recommend using Choice 2 when following along with the book, but to give Choice 1 a whirl (after reading Django's documentation) on a new project as it's easier to read.

I hope this helps!

Andrew
http://jambonsw.com
http://django-unleashed.com



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