Django EAV 2
Django EAV 2 stores extra, typed attributes for your Django models without changing their tables. Define an attribute once, then read, write, and filter it on any registered model as if it were a field. Administrators can add and change attributes at runtime, in the Django admin or in code, without a migration.
It is a fork of django-eav, which was itself derived from eav-django.
Read the documentation at https://django-eav2.readthedocs.io.
Install
pip install django-eav2
Add eav to INSTALLED_APPS, then run python manage.py migrate:
INSTALLED_APPS = [
# ...
"eav",
]
The package's tables use BigAutoField primary keys. To use UUIDs, set
EAV2_PRIMARY_KEY_FIELD = "django.db.models.UUIDField" before the first
migrate. See the configuration docs.
Quick start
Register a model, create an attribute, then store and query values:
import eav
from django.db import models
from eav.models import Attribute
class Supplier(models.Model):
name = models.CharField(max_length=100)
eav.register(Supplier)
Attribute.objects.create(name="City", datatype=Attribute.TYPE_TEXT)
supplier = Supplier.objects.create(name="Acme", eav__city="London")
supplier.eav.city # "London"
Supplier.objects.filter(eav__city="London")
Is EAV right for you?
EAV trades query speed and simplicity for flexibility. It suits open-ended, sparse, or user-defined properties, and is a poor fit for stable, known columns or performance-critical reporting. The concepts page explains the model, when to use it, when to avoid it, and the alternatives.
Contributing
See CONTRIBUTING.md. The project is part of Jazzband, which has a code of conduct.
4 maintainers
Metadata
4 maintainers
Release files for django-eav2 2.0.0
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| File | Size | Uploaded | Provenance | |
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Total release size: 121.8 kB
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