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Django EAV or Entity-Attribute-Value is a design pattern that allows flexibility in adding new attributes to an entity without modifying the database schema. In Django, this can be implemented through the django-eav package.

To utilize Django EAV within the models, follow these steps:

1. Install the django-eav package

   pip install django-eav

2. Add 'eav' to the INSTALLED_APPS list in settings.py

   INSTALLED_APPS = [ ..., 'eav', ]

3. Create a new model that extends EAVEntity

   from eav.models import EAVEntity

   class MyEntity(EAVEntity): pass

4. Define the attributes that can be added to the entity using EAVAttribute

   from eav.models import EAVAttribute

   class MyAttribute(EAVAttribute): pass

5. Add the attributes to the entity using the addeavvalue method

   entity = MyEntity.objects.create()

   attr = MyAttribute.objects.create(name='my_attribute')

   entity.addeavvalue(attr, 'my_value')

6. Get the attributes of an entity using the eav attribute

   entity.eav.my_attribute

This way, you can utilize Django EAV within the models to add flexible attributes to entities without modifying the database schema.