Add Search Functionality in Admin

# models.py

from django.db import models

class Customer(models.Model):
    first_name = models.CharField(max_length=100)
    last_name = models.CharField(max_length=100)
    email = models.EmailField(unique=True)
    phone = models.CharField(max_length=20, blank=True)

    def __str__(self):
        return f"{self.first_name} {self.last_name}"
  

# admin.py

from django.contrib import admin
from .models import Customer

@admin.register(Customer)
class CustomerAdmin(admin.ModelAdmin):
    list_display = ('first_name', 'last_name', 'email', 'phone')
    search_fields = ('first_name', 'last_name', 'email')