Using Raw ID Fields in Admin

# models.py

from django.db import models

class Customer(models.Model):
    name = models.CharField(max_length=120)
    email = models.EmailField(unique=True)

    def __str__(self):
        return self.name

class Order(models.Model):
    customer = models.ForeignKey(Customer, on_delete=models.CASCADE)
    product = models.CharField(max_length=120)
    total = models.DecimalField(max_digits=8, decimal_places=2)
    created_at = models.DateTimeField(auto_now_add=True)

    def __str__(self):
        return f"Order #{self.id} - {self.product}"
  

# admin.py

from django.contrib import admin
from .models import Customer, Order

@admin.register(Customer)
class CustomerAdmin(admin.ModelAdmin):
    list_display = ('name', 'email')

@admin.register(Order)
class OrderAdmin(admin.ModelAdmin):
    list_display = ('id', 'customer', 'product', 'total', 'created_at')
    raw_id_fields = ('customer',)  # use raw ID widget for ForeignKey