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Rails 7.0 removes webpacker and spring from the default stack, adds encrypted attributes, allows for asynchronous query loading, changes autoloading defaults, attaches comments to Active Record queries, and introduces new tools for front-end development. Learn about these and many other Pull Requests that were merged in rails/rails in 2021. Understand the motivation behind some architectural decisions. Review the process to upgrade from Rails 6.1 to Rails 7.
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The video titled "Unboxing Rails 7: What's new in the latest major version" presented by Claudio Baccigalupo at RailsConf 2022 provides an in-depth overview of the significant changes and features introduced in Rails 7. The presentation emphasizes that Rails 7 was released in December 2021 and marks a substantial evolution in the framework, building upon over 4,000 commits made by 500 contributors. Baccigalupo's talk is structured to explore changes in key libraries such as Ruby, Active Support, Active Record, and more. Here are the main points covered in the video: - **Compatibility with Ruby:** Rails 7 requires Ruby 2.7 or higher, recommending Ruby 3 for better performance. - **Active Support Enhancements:** New methods like `sole`, `max`, and `min` have been added to facilitate more efficient data operations. - **Active Model Validations:** New validation options, including passing a range to `validate_numericality` and a powerful `comparison` validator, enhance model validations. - **Active Storage Updates:** Active Storage now supports audio file analysis, expiring URLs, and can integrate with cloud services seamlessly. - **Action View Helpers:** Improvements to HTML rendering methods such as `link_to`, `phone_to`, and `sms_to` make it easier to create and manage links. - **Active Record Improvements:** Notable features include encrypted attributes, asynchronous query loading with `load_async`, `excluding` method for querying, and an `invert_where` method. - **Rails 7 Simplification:** Rails 7 removes the default inclusion of Spring and Listen for better performance management during development. - **JavaScript and CSS Bundling:** Rails 7 transitions away from Webpacker, allowing users to select their preferred JS bundler (like Rollup or ESBuild) upon app creation, and introduces the CSS bundling to enhance flexibility. - **Introduction of Import Maps:** By adopting import maps, Rails 7 offers a bundling-free front-end development option, defaulting to Hotwire, which enables modern JavaScript without requiring a bundler like Webpack. In conclusion, Baccigalupo encourages developers to upgrade to Rails 7 and highlights the importance of community contributions to the framework. Through these advancements, Rails 7 aims to improve developer experience, enhance performance, and expand the framework's versatility in modern web development.
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