Typorithm learning path
Django: practical web applications
Factories and settings, named routes, methods, templates, forms, constraints, querysets, relations, transactions, migrations, authentication, ownership, CSRF, caching, tests and an owned-role capstone. Six sections per lesson, retained exercise baselines, two hints and small gradual tasks. Verified with Python 3.13 and Django 6.1.3. Reading and reasoning checks work in the app; real framework execution uses the downloadable computer lab. CPU only, owned fixtures, no external datasets or production feeds.
Study with a practical destination
Use the linked lessons in order, complete the lab and explain the decisions without the reference. Select the path and depth that match your role.
Django: a tested owned-role application
Before starting: Python functions, exceptions and classes; SQL foundations help with constraints and transactions. Reading and reasoning checks work in the app; framework execution uses the isolated pinned computer lab.
Build and explain: Build and test an owner-scoped Django workflow with forms, query budgets, migrations and real CSRF checks.
- 1. A Django project and its settings boundary
- 2. Named routes, converters and reverse
- 3. HTTP methods and explicit response statuses
- 4. Templates, escaping and missing values
- 5. Forms and cleaned data
- 6. Models and database-enforced invariants
- 7. Querysets, filtering and evaluation
- 8. Related objects without hidden N+1 queries
- 9. Atomic writes and on-commit work
- 10. Migrations preserve state and existing rows
- 11. Authentication and a session lifecycle
- 12. Object ownership belongs in the lookup
- 13. CSRF checks must actually be enabled in tests
- 14. Cache identity includes the selected population
- 15. Tests that reject a changed response contract
- 16. Capstone: an owned, validated application flow
Review evidence: Attempt the retained small exercise before revealing its solution. Use the two hints, compare observed framework state and run the positive and negative cases. Optional stretches do not block the core. Local fixtures do not establish production readiness or professional certification.
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Module 1 · 1 lessons
A Django project and its settings boundary
Separate the project configuration, reusable app and request boundary before adding database behavior.
Module 2 · 1 lessons
Named routes, converters and reverse
Generate paths from named routes while keeping format checks separate from object existence and authorization.
Module 3 · 1 lessons
HTTP methods and explicit response statuses
Make allowed operations and response status part of the view contract instead of assuming a valid path permits every method.
Module 4 · 1 lessons
Templates, escaping and missing values
Keep untrusted text as text in an HTML template and distinguish a missing value from an intentionally empty one.
Module 5 · 1 lessons
Forms and cleaned data
Use the real form validation boundary before consuming submitted values or attempting persistence.
Module 6 · 1 lessons
Models and database-enforced invariants
Distinguish model field metadata from a constraint that the database actually enforces.
Module 7 · 1 lessons
Querysets, filtering and evaluation
Select one explicit population, order it deterministically and observe when a queryset actually executes.
Module 8 · 1 lessons
Related objects without hidden N+1 queries
Choose a loading strategy from relationship cardinality and measure the queries that rendering actually performs.
Module 9 · 1 lessons
Atomic writes and on-commit work
Keep a multi-step write all-or-nothing and schedule follow-up work only after a successful commit.
Module 10 · 1 lessons
Migrations preserve state and existing rows
Distinguish editing a model, generating a migration and applying a reviewed schema change to existing data.
Module 11 · 1 lessons
Authentication and a session lifecycle
Use the framework’s password and session mechanisms while distinguishing a login check from a forced test identity.
Module 12 · 1 lessons
Object ownership belongs in the lookup
Check the authenticated principal and the requested object’s owner together before returning private data.
Module 13 · 1 lessons
CSRF checks must actually be enabled in tests
Exercise the browser request boundary with a real cookie/token pair and explicit enforcement.
Module 14 · 1 lessons
Cache identity includes the selected population
Use Django’s cache API with an explicit key and expiry while keeping representation scope separate from storage backend.
Module 15 · 1 lessons
Tests that reject a changed response contract
Exercise a real response and demonstrate that the test suite catches a controlled defect rather than checking success status alone.
Module 16 · 1 lessons
Capstone: an owned, validated application flow
Compose real framework boundaries so successful creation, rejected input and private-object access tell one consistent story.