Login and Sessions

Goal

This snapshot advances Canopy Journal by teaching you to authenticate with Adonis session guards.

Every numbered folder is a complete app. Run this stage independently, then compare it with the previous folder.

Prerequisites

Use Node.js 20+, npm, and Docker for Postgres stages. You should recognize async functions and HTTP verbs.

Port 3002 must be free. Copy .env.example before starting database stages.

• Node.js and npm
• A code editor and terminal
• Docker from part 4 onward

Concepts

Session auth stores the user id in a signed cookie.

Keep controllers thin: routes accept input, Lucid models enforce rules, and Edge escapes output by default.

Walkthrough

Verify credentials, create session, clear on logout.

Read the example, then open the matching snapshot. The repository includes the surrounding setup and error handling.

await auth.use('web').login(user, req)\nreturn res.redirect('/')

Run and verify

Enter 07-Login-And-Sessions, install dependencies, copy .env.example when present, and start Ace on port 3002.

Open http://127.0.0.1:3002. Watch the terminal for validation and database errors.

docker compose up -d
git clone https://github.com/michaeldunga1/fcc-adonis-blog.git
cd fcc-adonis-blog/07-Login-And-Sessions
npm install
cp .env.example .env
node ace serve --watch

Troubleshooting

Changing APP_KEY invalidates cookies.

For database failures, confirm Docker and the canopy_NN name when applicable. Never commit .env or node_modules.

• Read the first error first
• Restart after environment changes
• Never commit secrets

Try this

Log in, restart, confirm session, then log out.

Test a happy path and one invalid or unauthorized request.

• Make one small change
• Test it in the browser
• Compare with the next snapshot only after it works