When would you use a function-based or class-based Django view?

Chooses Django view style by clarity, reuse, and lifecycle needs rather than hierarchy preference.

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TL;DR

I use a function-based view when the request flow is small and explicit. I use a class-based view when HTTP methods share setup or when Django's generic views provide a close match for common list, detail, form, create, or update behavior. Class-based views offer reuse through inheritance and mixins, but their dispatch and method-resolution flow can be harder to follow.

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A balanced trade-off between explicit functions and reusable class-based behavior.

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Core answer
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Both view styles can be correct; the useful choice is the one that keeps request behavior clear.
I use a function-based view when the request flow is small and explicit. I use a class-based view when HTTP methods share setup or when Django's generic views provide a close match for common list, detail, form, create, or update behavior. Class-based views offer reuse through inheritance and mixins, but their dispatch and method-resolution flow can be harder to follow.
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I start from the simplest readable implementation and adopt a generic view only when it removes real repetition. If I override most hooks or stack many mixins to force a unique workflow into generic CRUD, a function or a smaller custom class is usually clearer. Business logic should be callable outside either view style, so changing the adapter does not rewrite the use case.

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Details

Calling class-based views inherently more advanced.
Using generic views while overriding nearly all their behavior.
Placing business rules in whichever view style was chosen.

When would you use a function-based or class-based Django view?

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