add this week in Rails (#400)

_posts/2024-11-29-this-week-in-rails.markdown

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+---
+layout: post
+title: "Rails World 2025 dates announced and more!"
+categories: news
+author: Greg
+og_image: assets/images/this-week-in-rails.png
+published: true
+date: 2024-11-29
+---
+
+
+Hi, it's [Greg](https://greg.molnar.io). Let's explore this week's changes in the Rails codebase.
+
+[Rails World 2025 -  Save the date](https://rubyonrails.org/2024/11/27/rails-world-2025-save-the-date)  
+Rails World 2025 will take place September 4 and 5, 2025, again in Amsterdam.
+The same venue, the same city, and good news - more tickets. The CFP is expected
+to open in early spring 2025, and tickets to be released shortly thereafter.
+Sponsorship sales opening soon (email: [email protected]).
+
+[Raise a more specific error when the job class can't be instantiated](https://github.com/rails/rails/pull/53770)  
+With this change, Rails will raise a more specific error during deserialization
+when a previously serialized job class is now unknown.
+`ActiveJob::UnknownJobClassError` will be raised instead of a more generic
+`NameError` to make it easily possible for adapters to tell if the `NameError`
+was raised during job execution or deserialization.
+
+[Improve error highlighting of multi-line methods in ERB templates](https://github.com/rails/rails/pull/53763)  
+This pull request improves the error highlighting of multi-line methods in ERB
+templates.
+
+[Don't enable YJIT in development and test environments](https://github.com/rails/rails/pull/53746)  
+The development and test environment tend to reload code and redefine methods (e.g.
+mocking), hence YJIT isn't generally faster in these environments. For this
+reason, YJIT will be disabled by default from Rails 8.1 in these environments. 
+
+[Change the _WEB_CONCURRENCY_ deploy comment default to `auto`](https://github.com/rails/rails/pull/53535)  
+Puma introduced a new `WEB_CONCURRENCY=auto` setting. The config sets puma's
+worker count to the count of available cpus. This pull request adds the new
+option to the explaining comments of a new project's default puma.rb config
+file.
+
+[Don’t ask for database password when running `kamal dbc`](https://github.com/rails/rails/pull/53011)  
+This pull request changes the `kamal dbc` to pass the `--include-password` flag
+to reuse the database password from database.yml.
+
+
+_You can view the whole list of changes [here](https://github.com/rails/rails/compare/@%7B2024-11-22%7D...main@%7B2024-11-29%7D)._
+_We had [25 contributors](https://contributors.rubyonrails.org/contributors/in-time-window/20241122-20241129) to the Rails codebase this past week!_
+
+Until next time!
+
+_[Subscribe](https://world.hey.com/this.week.in.rails) to get these updates mailed to you._