python
44 lines · 1 tab
Priya Sharma
Jan 2026
1 tab
from django.db import models
class Post(models.Model):
title = models.CharField(max_length=200)
content = models.TextField()
status = models.CharField(max_length=20)
published_at = models.DateTimeField(null=True)
class Meta:
ordering = ['-published_at']
class PublishedPostManager(models.Manager):
def get_queryset(self):
return super().get_queryset().filter(status='published')
class PublishedPost(Post):
"""Proxy model showing only published posts."""
objects = PublishedPostManager()
class Meta:
proxy = True
ordering = ['-published_at']
def publish(self):
"""Publish this post."""
self.status = 'published'
from django.utils import timezone
self.published_at = timezone.now()
self.save()
class FeaturedPost(Post):
"""Proxy for featured posts with different display."""
class Meta:
proxy = True
verbose_name = 'Featured Post'
def __str__(self):
return f'⭐ {self.title}'
1 file · python
Explain with highlit
Proxy models create different Python behavior for the same database table. I set proxy = True in Meta. This adds methods or changes default ordering without new tables. Proxy models share the same table as the original. Use cases include different manager methods, custom string representations, or model-specific admin interfaces. Unlike multi-table inheritance, there's no JOIN overhead. I use proxies for read-only variants or role-specific model APIs. This keeps code organized without database complexity.
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