[python-uk] hexagonal Django

Harry Percival harry.percival at gmail.com
Fri Aug 15 12:22:22 CEST 2014

Thanks Peter!  I was speaking to Brandon at Pycon this year and he was
telling me this was going to be his next talk to take on the road, and I
was definitely looking forward to seeing it.  Matt O'Donnell was also
there, and he's done a talk on this sort of thing recently too (
https://www.youtube.com/watch?v=NGhL7IA6Dik). It's definitely in the air.

My own modest attempts to approach the subject are in my book -- in chapter
19, where I show how striving for test isolation can (theoretically) push
you towards something like a lean architecture (
http://chimera.labs.oreilly.com/books/1234000000754/ch19.html) and in
chapter 21, the wrap-up, where I waffle on about all these things (

I don't think I managed to broach the subject nearly as cleanly as Brandon
did.  I really admire his talks.  His data structures talk was one of the
top 3 I saw at Pycon this year (
Perfect pace, slides that complement rather than repeat the talk,
fascinating and useful content...

Anyways, back to our onions - I guess the thing that's always bothered me a
bit about the "clean architecture" is that my main project (pythonanywhere)
is "all boundaries", to use Gary Bernhardt's terminology.  Or, to put it
differently, I don't think we really have much in the way of "business
logic".  We just turn Http requests into commands that go to processes.
There's really not much in the way of "logic" in the way.  No calculations
or business rules to speak of.  So it's never seemed worth it, to us.

And sometimes I think -- aren't many web projects just thin CRUD wrappers
around a database?  Is going to all the trouble of isolating your business
logic from, eg, django, really worth it in most cases?

On 13 August 2014 13:09, Daniel Pope <lord.mauve at gmail.com> wrote:

> Coincidentally, I blogged on the topic of Django project organisation at
> the weekend.
> http://mauveweb.co.uk/posts/2014/08/organising-django-projects.html
> May be of interest?
> _______________________________________________
> python-uk mailing list
> python-uk at python.org
> https://mail.python.org/mailman/listinfo/python-uk

Harry J.W. Percival
Twitter: @hjwp
Mobile:  +44 (0) 78877 02511
Skype:         harry.percival
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