Common AdonisJS Issues and Fixes

1. "Database Migrations Failing"

Database migrations may fail due to missing configurations or incorrect schema definitions.

Possible Causes

  • Incorrect database credentials in .env file.
  • Conflicting table constraints in migration files.
  • Database connection issues.

Step-by-Step Fix

1. **Verify Database Configuration**:

# Checking database connection in AdonisJSnode ace migration:run --verbose

2. **Rollback and Rerun Migrations**:

# Resetting and re-running migrationsnode ace migration:reset && node ace migration:run

Dependency and Installation Issues

1. "Cannot Find Module Error"

AdonisJS projects may fail to start due to missing or incompatible dependencies.

Fix

  • Ensure dependencies are properly installed.
  • Clear the Node.js module cache.
# Reinstalling dependenciesrm -rf node_modules package-lock.jsonnpm install

Middleware and Authentication Issues

1. "Middleware Not Executing"

Middleware functions may not be triggered due to incorrect registration.

Solution

  • Ensure middleware is registered in start/kernel.ts.
  • Use await next() inside custom middleware.
// Registering middleware in start/kernel.tsServer.middleware.register([  'App/Middleware/AuthMiddleware',])

Performance and Query Optimization

1. "Slow Database Queries"

Database performance issues may arise due to inefficient queries or lack of indexing.

Fix

  • Use Eager Loading to minimize queries.
  • Index frequently queried database columns.
// Using eager loading in AdonisJSconst users = await User.query().preload('posts');

Conclusion

AdonisJS simplifies back-end development, but resolving database migration errors, handling dependency conflicts, managing middleware execution, and optimizing queries are crucial for performance. By following these troubleshooting strategies, developers can ensure a stable and scalable AdonisJS application.

FAQs

1. Why are my database migrations failing?

Ensure the database credentials are correct, rollback conflicting migrations, and re-run them.

2. How do I fix missing module errors in AdonisJS?

Delete node_modules and package-lock.json, then reinstall dependencies using npm install.

3. Why is my middleware not executing?

Ensure the middleware is registered in start/kernel.ts and includes await next() in its execution flow.

4. How can I speed up database queries in AdonisJS?

Use eager loading for relationships and ensure that frequently queried columns are indexed.

5. Can AdonisJS be used for large-scale applications?

Yes, AdonisJS supports scalable applications with built-in ORM, authentication, and caching mechanisms.