This is a pre-production deployment of Warehouse, however changes made here WILL affect the production instance of PyPI.
Latest Version Dependencies status unknown Test status unknown Test coverage unknown
Project Description
``django-model-reference`` defines a simple :cls:`model_reference.Reference`
model that hold named references to specific instances of any Django model.

Usage
=====

References are controlled by the :func:`register()` and :func:`load` functions of
the ``model_reference`` module. These function are also mirrored by the
corresponding methods in the ``Reference.objects`` manager. To register a
reference, simply pass the object and either a unique name or a unique suffix::

from model_reference import register, load
from django.contrib.auth.models import User

# Fetch some objects
john = User.objects.get(username='john')
ringo = User.objects.get(username='ringo')

# Register references in the database
register(john, 'favorite beatle')
register(ringo, suffix='drummer')

The name for each reference is unique. If the register function is called with
the explicit ``suffix`` argument, it will register the instance as
``<app_label>.<model>:suffix``, which in our case becomes ``'auth.user:drummer'``.

In order to retrieve the objects referred by the Reference object, we can use
the :func:`load` function::

>>> load('favorite beatle')
<user: john="">
>>> load('drummer', model=User)
<user: ringo="">

Objects registered with the suffix form of the register function should pass a
model class in order to construct the complete name string. This is equivalent
as creating the string by hand:

>>> load('auth.user:drummer')
<user: ringo="">


Empty references
================

If one request a non-existing reference to the load() function, it raises an
:error:`model_reference.EmptyReferenceError`. Users can register factory
functions to create these objects on-the-fly.

The default way of registering factory function is via the :func:`model_reference.factory`
decorator. It must be called with a reference string (or suffix + model) and
decorates a function that return a new instance and is called without arguments::

@factory('drummer', model=User)
def make_ringo():
user, created = User.object.get_or_create(
username=ringo,
first_name='Richard'
last_name='Starkley',
email='ringo@applerecords.co.uk'
)
return user

If a new instance is created, the function is responsible to save it in the
database
Release History

Release History

0.1.1

This version

History Node

TODO: Figure out how to actually get changelog content.

Changelog content for this version goes here.

Donec et mollis dolor. Praesent et diam eget libero egestas mattis sit amet vitae augue. Nam tincidunt congue enim, ut porta lorem lacinia consectetur. Donec ut libero sed arcu vehicula ultricies a non tortor. Lorem ipsum dolor sit amet, consectetur adipiscing elit.

Show More

Supported By

WebFaction WebFaction Technical Writing Elastic Elastic Search Pingdom Pingdom Monitoring Dyn Dyn DNS HPE HPE Development Sentry Sentry Error Logging CloudAMQP CloudAMQP RabbitMQ Heroku Heroku PaaS Kabu Creative Kabu Creative UX & Design Fastly Fastly CDN DigiCert DigiCert EV Certificate Rackspace Rackspace Cloud Servers DreamHost DreamHost Log Hosting