Merge 295fe153ad into 97c8701a5a

README.md

@@ -10,7 +10,7 @@ pairing with smart people at Hashrocket.
 
 For a steady stream of TILs, [sign up for my newsletter](https://crafty-builder-6996.ck.page/e169c61186).
 
-_1583 TILs and counting..._
+_1582 TILs and counting..._
 
 See some of the other learning resources I work on:
 - [Ruby Operator Lookup](https://www.visualmode.dev/ruby-operators)
@@ -993,7 +993,6 @@ See some of the other learning resources I work on:
 - [Define The Root Path For The App](rails/define-the-root-path-for-the-app.md)
 - [Delete Paranoid Records](rails/delete-paranoid-records.md)
 - [Demodulize A Class Name](rails/demodulize-a-class-name.md)
-- [Determine The Configured Primary Key Type](rails/determine-the-configured-primary-key-type.md)
 - [Different Ways To Add A Foreign Key Reference](rails/different-ways-to-add-a-foreign-key-reference.md)
 - [Disambiguate Where In A Joined Relation](rails/disambiguate-where-in-a-joined-relation.md)
 - [Empty find_by Returns First Record](rails/empty-find-by-returns-first-record.md)

rails/determine-the-configured-primary-key-type.md

@@ -1,35 +0,0 @@
-# Determine The Configured Primary Key Type
-
-I noticed an interesting helper function in the database migration generated by
-`bin/rails active_storage:install`.
-
-```ruby
-class CreateActiveStorageTables < ActiveRecord::Migration[8.0]
-  def change
-    # Use Active Record's configured type for primary and foreign keys
-    primary_key_type, foreign_key_type = primary_and_foreign_key_types
-
-    # ...
-  end
-
-  private
-
-    def primary_and_foreign_key_types
-      config = Rails.configuration.generators
-      setting = config.options[config.orm][:primary_key_type]
-      primary_key_type = setting || :primary_key
-      foreign_key_type = setting || :bigint
-      [ primary_key_type, foreign_key_type ]
-    end
-end
-```
-
-The `primary_and_foreign_key_types` method looks in the generators config for
-the ORM (`:active_record`) to determine the configured `:primary_key_type`. By
-default this will return `nil`. This method then uses `:primary_key` as a
-fallback value which will be `bigint`. That's why the `foreign_key_type` falls
-back to `:bigint`.
-
-If desired, this can be manually configured in `config/application.rb` like
-shown in the [ActiveRecord Migrations
-docs](https://guides.rubyonrails.org/active_record_migrations.html#enabling-uuids-in-rails).