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-composition` provides the abstract way to denormalize data from your models in simple declarative way through special generic model field called `CompositionField`.

Most cases of data denormalization are pretty common so `django-composition` has several "short-cuts" fields that handles most of them.

## Base concept

`CompositionField` is django model field that provides interface to data denormalization.

`CompositionField` constructor params:
- native - Django field instance for current compostion field
- trigger - one or some numberr of triggers that handle composition.
Trigger is a dict with allowed keys:
- on - signal or list of signals that this field handles
- do - signals handler, with 3 params:
- related instance
- instance (that comes with signal send)
- concrete signal (one from `on` value)
- field_holder_getter - function that gets instance(that comes with signal send)\
as parameter and returns field holder
object (related instance)
- sender - signal sender
- sender_model - model instance or model name that send signal
- commit - flag that indicates save instance after trigger appliance or not
- commons - a trigger like field with common settings
for all given triggers
- update_method - dict for customization of update_method. Allowed params:
- initial - initial value to field before applince of method
- do - index of update trigger or trigger itself
- queryset - query set or callable(with one param - `instance` of an holder model)
that have to retun something iterable
- name - custom method name instead of `update_FOO`

## Short-cuts

Here is the list of provided short-cut fields:

- `ForeignAttributeField`

- `ChildsAggregationField`

- `AtributesAggregationField`
Release History

Release History


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

Download Files

Download Files

TODO: Brief introduction on what you do with files - including link to relevant help section.

File Name & Checksum SHA256 Checksum Help Version File Type Upload Date
django-composition-0.2.tar.gz (7.1 kB) Copy SHA256 Checksum SHA256 Source Aug 27, 2009

Supported By

WebFaction WebFaction Technical Writing Elastic Elastic Search Pingdom Pingdom Monitoring Dyn Dyn DNS 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