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Hi, it’s <a href="https://greg.molnar.io">Greg</a>. Let’s explore this week’s changes in the Rails codebase.

<a href="https://github.com/rails/rails/issues/51262">Feedback for structuring the Active Record Query Guide</a> 
The Active Record Querying Guide is getting restructured and the team working on it requests feedback from the community.

<a href="https://sessionize.com/rails-world">Rails World CFP closes in 2 weeks</a> 
2 more weeks left to submit your talk to Rails World 2024!

<a href="https://github.com/rails/rails/pull/51267">Railties: configure sanitizer vendor in 7.1 defaults more robustly</a> 
In apps where rails-html-sanitizer was not eagerly loaded, the sanitizer default could end up being <code class="language-plaintext highlighter-rouge">Rails::HTML4::Sanitizer</code> when it should be set to <code class="language-plaintext highlighter-rouge">Rails::HTML5::Sanitizer</code>. This change <code class="language-plaintext highlighter-rouge">require</code>s rails-html-sanitizer immediately before it’s needed, and avoids the possibly-incorrect assumption that <code class="language-plaintext highlighter-rouge">Rails::HTML::Sanitizer</code> is already defined.

<a href="https://github.com/rails/rails/p_posts/2024-03-08-this-week-in-rails.markdownull/51235">Illustrator .ai files are previewable as PDFs</a> 
This happened to work with Marcel 1.0.2 and earlier since magic byte sniffing sees that Illustrator files are PDFs internally, causing these files to be treated as <code class="language-plaintext highlighter-rouge">application/pdf</code> despite having a declared content type of <code class="language-plaintext highlighter-rouge">application/illustrator</code> and an <code class="language-plaintext highlighter-rouge">.ai</code> file extension. Marcel 1.0.3 corrected this to the more specific <code class="language-plaintext highlighter-rouge">application/illustrator</code> subtype of <code class="language-plaintext highlighter-rouge">application/pdf</code>, but the MuPDF previewer only accepts the parent <code class="language-plaintext highlighter-rouge">application/pdf</code> type.
This pull request changes it to accept PDF and any child types allows the previewer to explicitly work with Illustrator files again, which was only a happy accident previously.
Another pull request made <a href="https://github.com/rails/rails/pull/51236">illustrator files previewable with Poppler as well</a>

<a href="https://github.com/rails/rails/pull/51230">Deprecate ActiveRecord::Base.connection and ConnectionPool#connection</a> 
This pull request deprecates <code class="language-plaintext highlighter-rouge">ActiveRecord::Base.connection</code> and <code class="language-plaintext highlighter-rouge">ActiveRecord::ConnectionAdapters::ConnectionPool#connection</code> in favor of <code class="language-plaintext highlighter-rouge">.lease_connection</code>. The method has been renamed as <code class="language-plaintext highlighter-rouge">lease_connection</code> to better reflect that the returned connection will be held for the duration of the request or job. <code class="language-plaintext highlighter-rouge">ActiveRecord::Base.connection</code>’s deprecation is a soft deprecation, no warnings will be issued and there is no current plan to remove the method.

<a href="https://github.com/rails/rails/pull/51204">Add dirties option to Model.uncached</a> 
This pull request adds a <code class="language-plaintext highlighter-rouge">dirties</code> option to <code class="language-plaintext highlighter-rouge">ActiveRecord::Base.uncached</code> and <code class="language-plaintext highlighter-rouge">ActiveRecord::ConnectionAdapters::ConnectionPool#uncached</code>. When set to <code class="language-plaintext highlighter-rouge">true</code> (the default), writes will clear all query caches belonging to the current thread. When set to <code class="language-plaintext highlighter-rouge">false</code>, writes to the affected connection pool will not clear any query cache.
This is needed by Solid Cache so that cache writes do not clear query caches.

You can view the whole list of changes <a href="https://github.com/rails/rails/compare/@%7B2024-03-01%7D...main@%7B2024-03-08%7D">here</a>.
We had <a href="https://contributors.rubyonrails.org/contributors/in-time-window/20240301-20240308">16 contributors</a> to the Rails codebase this past week!

Until next time!

<a href="https://world.hey.com/this.week.in.rails">Subscribe</a> to get these updates mailed to you.

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--- !ruby/object:Feedjira::Parser::AtomEntry
author: Greg
content: |-
 Hi, it’s <a href="https://greg.molnar.io">Greg</a>. Let’s explore this week’s changes in the Rails codebase.

<a href="https://github.com/rails/rails/issues/51262">Feedback for structuring the Active Record Query Guide</a> 
 The Active Record Querying Guide is getting restructured and the team working on it requests feedback from the community.

<a href="https://sessionize.com/rails-world">Rails World CFP closes in 2 weeks</a> 
 2 more weeks left to submit your talk to Rails World 2024!

<a href="https://github.com/rails/rails/pull/51267">Railties: configure sanitizer vendor in 7.1 defaults more robustly</a> 
 In apps where rails-html-sanitizer was not eagerly loaded, the sanitizer default could end up being <code class="language-plaintext highlighter-rouge">Rails::HTML4::Sanitizer</code> when it should be set to <code class="language-plaintext highlighter-rouge">Rails::HTML5::Sanitizer</code>. This change <code class="language-plaintext highlighter-rouge">require</code>s rails-html-sanitizer immediately before it’s needed, and avoids the possibly-incorrect assumption that <code class="language-plaintext highlighter-rouge">Rails::HTML::Sanitizer</code> is already defined.

<a href="https://github.com/rails/rails/p_posts/2024-03-08-this-week-in-rails.markdownull/51235">Illustrator .ai files are previewable as PDFs</a> 
 This happened to work with Marcel 1.0.2 and earlier since magic byte sniffing sees that Illustrator files are PDFs internally, causing these files to be treated as <code class="language-plaintext highlighter-rouge">application/pdf</code> despite having a declared content type of <code class="language-plaintext highlighter-rouge">application/illustrator</code> and an <code class="language-plaintext highlighter-rouge">.ai</code> file extension. Marcel 1.0.3 corrected this to the more specific <code class="language-plaintext highlighter-rouge">application/illustrator</code> subtype of <code class="language-plaintext highlighter-rouge">application/pdf</code>, but the MuPDF previewer only accepts the parent <code class="language-plaintext highlighter-rouge">application/pdf</code> type.
 This pull request changes it to accept PDF and any child types allows the previewer to explicitly work with Illustrator files again, which was only a happy accident previously.
 Another pull request made <a href="https://github.com/rails/rails/pull/51236">illustrator files previewable with Poppler as well</a>

<a href="https://github.com/rails/rails/pull/51230">Deprecate ActiveRecord::Base.connection and ConnectionPool#connection</a> 
 This pull request deprecates <code class="language-plaintext highlighter-rouge">ActiveRecord::Base.connection</code> and <code class="language-plaintext highlighter-rouge">ActiveRecord::ConnectionAdapters::ConnectionPool#connection</code> in favor of <code class="language-plaintext highlighter-rouge">.lease_connection</code>. The method has been renamed as <code class="language-plaintext highlighter-rouge">lease_connection</code> to better reflect that the returned connection will be held for the duration of the request or job. <code class="language-plaintext highlighter-rouge">ActiveRecord::Base.connection</code>’s deprecation is a soft deprecation, no warnings will be issued and there is no current plan to remove the method.

<a href="https://github.com/rails/rails/pull/51204">Add dirties option to Model.uncached</a> 
 This pull request adds a <code class="language-plaintext highlighter-rouge">dirties</code> option to <code class="language-plaintext highlighter-rouge">ActiveRecord::Base.uncached</code> and <code class="language-plaintext highlighter-rouge">ActiveRecord::ConnectionAdapters::ConnectionPool#uncached</code>. When set to <code class="language-plaintext highlighter-rouge">true</code> (the default), writes will clear all query caches belonging to the current thread. When set to <code class="language-plaintext highlighter-rouge">false</code>, writes to the affected connection pool will not clear any query cache.
 This is needed by Solid Cache so that cache writes do not clear query caches.

You can view the whole list of changes <a href="https://github.com/rails/rails/compare/@%7B2024-03-01%7D...main@%7B2024-03-08%7D">here</a>.
 We had <a href="https://contributors.rubyonrails.org/contributors/in-time-window/20240301-20240308">16 contributors</a> to the Rails codebase this past week!

Until next time!

<a href="https://world.hey.com/this.week.in.rails">Subscribe</a> to get these updates mailed to you.
title_type: html
title: Illustrator file preview, deprecations and more!
links:
- https://rubyonrails.org/2024/3/8/this-week-in-rails
published: 2024-03-08 00:00:00.000000000 Z
entry_id: https://rubyonrails.org/2024/3/8/this-week-in-rails
summary: Hi, it’s Greg. Let’s explore this week’s changes in the Rails codebase.
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 newspaper: Ruby on Rails
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url: https://rubyonrails.org/2024/3/8/this-week-in-rails
updated: 2024-03-08 00:00:00.000000000 Z
raw_title: Illustrator file preview, deprecations and more!

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