Ruby on Rails 7, released in December 2021, has truly changed the game in web development, making the framework more modern and developer-friendly. The main innovations focus on simplifying development, improving performance, and enhancing security, reflecting current industry trends and needs.

One of the key changes was the integration of Hotwire, an innovative set of tools that includes Turbo and Stimulus. Hotwire allows you to create dynamic and interactive web applications with a minimum amount of JavaScript. Turbo is responsible for updating parts of the page without a full reload, and Stimulus adds interactivity through small, easily maintainable scripts. This approach significantly reduces the complexity of front-end code, speeds up page loading, and improves interface responsiveness.

Another important innovation was the abandonment of Webpacker and Node.js in favor of the import maps system for managing JavaScript libraries. This allows you to connect the necessary libraries directly from CDN without complex builds and configurations, simplifying project setup and reducing dependence on external tools. For many teams, this means a faster start and lower infrastructure support costs.

In terms of security, Rails 7 has added the ability to encrypt ActiveRecord attributes. This feature allows developers to encrypt sensitive data at the model level — when writing to and reading from the database. This built-in mechanism helps to better protect user data and complies with modern security standards, which is especially important in the context of increasingly stringent information security requirements.

Rails 7 has also improved support for asynchronous operations and multithreading. This allows for more efficient processing of parallel requests and tasks, increasing the overall performance of applications, especially those that work with large amounts of data or interact intensively with external services.

As a result, Ruby on Rails 7 provides developers with tools that make creating web applications easier, faster, and more secure. These changes meet modern market requirements and allow you to create more scalable and responsive projects with less time and resources.