Rails Foundation Contributing Member
Ruby on Rails consulting from engineers who work deep in Rails.
Saeloun helps teams modernize Rails applications, improve performance, untangle production issues, and ship product work with a senior Rails and React team in Boston and Pune.
- 606+
- engineering articles
- 2019
- founded in Boston
- Rails
- Foundation member
Latest Rails, React, and engineering articles
Field notes on framework changes, performance, upgrades, testing, and product engineering.
Rails 7.1 Composite Primary Key Support
ActiveRecord models can now be configured with composite primary keys, making it easier to work with complex data models.
Rails 7.2 Adds Support For Devcontainer.
In Rails 7.2, use `--devcontainer` flag with `rails new` to add a devcontainer to new apps and run `bin/rails devcontainer` for existing apps.Functional Programming In React
Learn how React implements functional programming with immutable data, pure functions, and composition.CSS Units Guide - rem, em, px, vh, vw Explained
Master CSS units like rem, em, px, vh, vw, and percentage. Learn when to use absolute vs relative units for responsive web design.Controlled vs Uncontrolled Components in React
Learn the key differences between controlled and uncontrolled components in React and when to use each.Rails SKIP_TEST_DATABASE_TRUNCATE Flag
Rails 7.2 adds SKIP_TEST_DATABASE_TRUNCATE flag to speed up multi-process test runs by skipping table truncations on large databases.Puma-dev: Run Multiple Rails Apps Locally
Use puma-dev to run multiple Rails apps with custom .test domains and HTTPS locally.
Rails 7.2 app:update as Rails Command
The app:update task to be a Rails command, and adds the --force flag to it, to allow running bin/rails app:update while accepting all the changes it makes.Rails after_all_transactions_commit Callback
Rails 7.2 adds after_all_transactions_commit to safely run actions like job enqueuing only after all transactions are committed.Rails with_connection for DB Optimization
Rails 7.2 adds with_connection to lease database connections only for a block's duration, improving concurrency for IO-heavy apps.