django-netfields

import os import django from django.conf import settings from django.db import models from netfields import InetAddressField, CidrAddressField, MACAddressField, NetManager import ipaddress import netaddr # Minimal Django setup for standalone script if not settings.configured: settings.configure( INSTALLED_APPS=['netfields'], DATABASES={'default': {'ENGINE': 'django.db.backends.sqlite3', 'NAME': ':memory:'}}, DEBUG=True ) django.setup() class NetworkDevice(models.Model): name = models.CharField(max_length=100) ip_address = InetAddressField(unique=True) network = CidrAddressField(blank=True, null=True) mac_address = MACAddressField(blank=True, null=True) objects = NetManager() def __str__(self): return f"{self.name} - {self.ip_address}" # Create database schema (in-memory for example) with django.test.utils.override_settings(MIGRATION_MODULES={'netfields': None}): from django.core.management import call_command call_command('makemigrations', 'netfields', interactive=False, verbosity=0) call_command('migrate', interactive=False, verbosity=0) # Usage examples # Create instances with ipaddress/netaddr objects device1 = NetworkDevice.objects.create( name='Router1', ip_address=ipaddress.ip_interface('192.168.1.1/24'), network=ipaddress.ip_network('192.168.1.0/24'), mac_address=netaddr.EUI('00:11:22:AA:BB:CC') ) device2 = NetworkDevice.objects.create( name='Server1', ip_address=ipaddress.ip_address('192.168.1.100'), network=ipaddress.ip_network('192.168.1.0/24') ) # Retrieve and query print(f"Device 1: {device1}") print(f"Device 2: {device2}") # Lookup using NetManager's custom lookups # Find devices within a network subnet_devices = NetworkDevice.objects.filter(ip_address__net_contained_or_equal='192.168.1.0/24') print(f"\nDevices in 192.168.1.0/24: {list(subnet_devices)}") # Find networks that contain a specific IP containing_networks = NetworkDevice.objects.filter(network__net_contains='192.168.1.50') print(f"Networks containing 192.168.1.50: {list(containing_networks)}") # Update an instance device1.ip_address = ipaddress.ip_interface('10.0.0.1/8') device1.save() print(f"Updated Device 1 IP: {device1.ip_address}")