django_abstract_admin

# event/models.py

from model_utils.models import TimeStampedModel

class EventModel(TimeStampedModel):
    name = models.CharField(max_length=64)

    def __str__(self):
        return self.name

# event/admin.py

from django.contrib import admin
from .models import EventModel

@admin.register(EventModel)
class EventAdmin(admin.ModelAdmin):
    list_display = ('name',)
    readonly_fields = ('created', 'modified',)
    fields = ('name', 'created', 'modified',)