Django Product Engineering · Lesson 2 of 12

Service Layers, Queries, and View Responsibilities

Separate where data access and workflow logic should live inside a growing Django product.

Fat view Query boundary Query helper Service layer View responsibility Workflow helper

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What you will learn

Explain when a Django view is carrying too much workflow or query responsibility.
Separate request handling from reusable service-layer decisions.
Name query boundaries that keep filtering, ordering, and data lookup rules easier to review.
Recommend one small workflow helper or query helper that makes a Django product easier to maintain.

Lesson shape

25 minute lesson with 6 sections, 4 exercises, 5 checkpoint questions, and 1 homework submission.

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Lesson outline

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