Django Admin Site

Consider if models.py file is as follows

from django.db import models
from django.contrib.auth.models import User

class Org(models.Model):
    name = models.CharField(max_length=200)
    address = models.TextField()
    orgId = models.CharField(max_length=50, unique=True)

    # add specific plural name to be shown in admin panel for the model
    class Meta:
        verbose_name_plural = 'Organizations'

class Opportunity(models.Model):
    status = models.CharField(max_length=50)
    description = models.TextField(null=True, blank=True)
    display_name = models.CharField(max_length=100)
    order_by = models.IntegerField(default=0)
    is_active = models.BooleanField(default=False)
    created = models.DateTimeField(auto_now_add=True)
    modified = models.DateTimeField(auto_now=True)
    organization = models.ForeignKey('Org')

Then admin.py file would be something like this

from django.contrib import admin
from .models import Opportunity

class adminOpportunity(admin.ModelAdmin): 
    search_fields = ["org__orgId", "status"] 
    list_display = ["get_orgId", "status", "display_name", "order_by", "is_active"] 
    list_editable = ['order_by', 'display_name', 'status'] 
    list_filter = (("is_active"),("created"),("modified")) 

    def get_orgId(self, obj): 
        return obj.org.orgId 

    get_orgId.short_description = 'Organization ID'   
    get_orgId.admin_order_field = 'org__orgId'

    class Meta:
        model = Opportunity

admin.site.register(Opportunity, adminOpportunity)

# add custome name to admin panel
admin.site.site_header = 'My Admin Panel'