35. How to manage a model with a FK with a large number of objects?

You can create a large number of categories like this:

categories = [Category(**{"name": "cat-{}".format(i)}) for i in range(100000)]
Category.objects.bulk_create(categories)

Now as Category has more than 100000 objects, when you go to the Hero admin, it will have category dropdown with 100000 selections. This will make the page both slow and the dropdown hard to use.

You can change how admin handles it by setting the raw_id_fields:

@admin.register(Hero)
class HeroAdmin(admin.ModelAdmin, ExportCsvMixin):
    ...
    raw_id_fields = ["category"]

This change the Hero admin to look like:

Add the popup looks like this

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