Django query annotation with boolean field

Question

Let\'s say I have a Product model with products in a storefront, and a ProductImages table with images of the product, which can have zero or more im

Answer 1

If performance matters, my suggestion is to add the hasPictures boolean field (as editable=False)

Then keep right value through ProductImage model signals (or overwriting save and delete methods)

Advantages:

• Index friendly.
• Better performance. Avoid joins.
• Database agnostic.
• Coding it will raise your django skills to next level.