gwng-pythonweb/pythonweb/productsApp/admin.py

from django.contrib import admin
from .models import Product,ProductImg

# admin.site.register(Product)
# admin.site.register(ProductImg)

class ProductImgInline(admin.StackedInline):
    model=ProductImg
    extra=1

class ProductAdmin(admin.ModelAdmin):
    inlines=[ProductImgInline,]

admin.site.register(Product,ProductAdmin)

# Register your models here.