<filename>grocery/products/admin.py
from django.contrib import admin

from .models import Product, Category, Offer

# Register your models here.
admin.site.register(Product)
admin.site.register(Category)
admin.site.register(Offer)

<filename>grocery/products/admin.py
from django.contrib import admin

from .models import Product, Category, Offer

# Register your models here.
admin.site.register(Product)
admin.site.register(Category)
admin.site.register(Offer)

# Register your models here.