Remove deprecated `ActiveRecord::Base.connection_config`

activerecord/CHANGELOG.md

@@ -1,3 +1,7 @@
+*   Remove deprecated `ActiveRecord::Base.connection_config`.
+
+    *Rafael Mendonça França*
+
 *   Filter attributes in SQL logs
 
     Previously, SQL queries in logs containing `ActiveRecord::Base.filter_attributes` were not filtered.

activerecord/lib/active_record/connection_handling.rb

@@ -296,17 +296,6 @@ module ActiveRecord
       self == Base || application_record_class?
     end
 
-    # Returns the configuration of the associated connection as a hash:
-    #
-    #  ActiveRecord::Base.connection_config
-    #  # => {pool: 5, timeout: 5000, database: "db/development.sqlite3", adapter: "sqlite3"}
-    #
-    # Please use only for reading.
-    def connection_config
-      connection_pool.db_config.configuration_hash
-    end
-    deprecate connection_config: "Use connection_db_config instead"
-
     # Returns the db_config object from the associated connection:
     #
     #  ActiveRecord::Base.connection_db_config

guides/source/7_0_release_notes.md

@@ -254,6 +254,8 @@ Please refer to the [Changelog][active-job] for detailed changes.
 
 *   Remove deprecated `:return_false_on_aborted_enqueue` option.
 
+*   Remove deprecated `ActiveRecord::Base.connection_config`.
+
 ### Deprecations
 
 *   Deprecated `Rails.config.active_job.skip_after_callbacks_if_terminated`.