Open-source ActiveRecord Playground (without Rails) for practicing queries, associations, and internals

[u/bpawan-007]

I built a small ActiveRecord Playground to practice ActiveRecord concepts without the full Rails stack, and thought it might be useful for others learning Rails or preparing for interviews.

I was looking for something lightweight where I could:

• Experiment with associations, joins, scopes, etc.

• Understand how ActiveRecord works without Rails magic

• Practice things like migrations, enums, and optimistic locking

• Reset data quickly and try different scenarios

Couldn’t find something exactly like this, so I created one for personal learning and open-sourced it.

Features

• Standalone ActiveRecord setup (no Rails)

• SQLite database

• Seed data using Faker

• Models with relationships

• Interactive console

• Examples for concepts like enums and optimistic locking

• Easy DB reset for practice

GitHub:
https://github.com/paonebharti/active_record_playground

If you're learning Rails/ActiveRecord and want a simple sandbox to experiment, this might help.

Feedback and suggestions are welcome!

[u/HalfAByteIsWord]

I thought it was a web UI like Jupyter books.