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127 Stars 8 Forks BSD 2-Clause "Simplified" License 23 Commits 2 Opened issues


Turtles all the way down

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(pronounced "djing", with a mostly-silent "d")

Blog entry: Mailing list:

djng is a micro-framework that depends on a macro-framework (Django).

My definition of a micro-framework: something that lets you create an entire Python web application in a single module:

import djng

def index(request): return djng.Response('Hello, world')

if name == 'main': djng.serve(index, '', 8888)

Or if you want hello and goodbye URLs, and a custom 404 page:

import djng

app = djng.ErrorWrapper( djng.Router( (r'^hello$', lambda request: djng.Response('Hello, world')), (r'^goodbye$', lambda request: djng.Response('Goodbye, world')), ), custom_404 = lambda request: djng.Response('404 error', status=404), custom_500 = lambda request: djng.Response('500 error', status=500) )

if name == 'main': djng.serve(app, '', 8888)

Under the hood, djng will re-use large amounts of functionality from Django, while re-imagining various aspects of the framework. A djng request object is a Django HttpRequest object; a djng response object is a Django HttpResponse. Django's template language and ORM will be available. Ideally, Django code will run almost entirely unmodified under djng, and vice versa.

Services, not Settings

I dislike Django's file - I often find I want to reconfigure settings at run-time, and I'm not comfortable with having arbitrary settings for so many different aspects of the framework.

djng experiments with /services/ in place of settings. Services are bits of shared functionality that djng makes available to applications - for example, caching, templating, ORM-ing and mail-sending.

Most of the stuff that Django sets up in will in djng be set up by configuring services. These services will be designed to be reconfigured at run-time, using a mechanism similar to Django middleware.

Some things that live in that really don't belong there - middleware for example. These will generally be constructed by composing together a djng application in code.

I'm still figuring out how the syntax for services should work.

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