Remove deprecated ActiveRecord::Base.configurations.default_hash.

Author: rafaelfranca

activerecord/CHANGELOG.md

@@ -1,3 +1,7 @@
+*   Remove deprecated `ActiveRecord::Base.configurations.default_hash`.
+
+    *Rafael Mendonça França*
+
 *   Remove deprecated `ActiveRecord::Base.arel_attribute`.
 
     *Rafael Mendonça França*

activerecord/lib/active_record/database_configurations.rb

@@ -65,19 +65,6 @@ def configs_for(env_name: nil, name: nil, include_replicas: false, include_hidde
       end
     end
 
-    # Returns the config hash that corresponds with the environment
-    #
-    # If the application has multiple databases +default_hash+ will
-    # return the first config hash for the environment.
-    #
-    #   { database: "my_db", adapter: "mysql2" }
-    def default_hash(env = default_env)
-      default = find_db_config(env)
-      default.configuration_hash if default
-    end
-    alias :[] :default_hash
-    deprecate "[]": "Use configs_for", default_hash: "Use configs_for"
-
     # Returns a single DatabaseConfig object based on the requested environment.
     #
     # If the application has multiple databases +find_db_config+ will return

activerecord/test/cases/database_configurations_test.rb

@@ -43,17 +43,6 @@ def test_configs_for_getter_with_env_and_name
     assert_equal "primary", config.name
   end
 
-  def test_default_hash_returns_config_hash_from_default_env
-    original_rails_env = ENV["RAILS_ENV"]
-    ENV["RAILS_ENV"] = "arunit"
-
-    assert_deprecated do
-      assert_equal ActiveRecord::Base.configurations.configs_for(env_name: "arunit", name: "primary").configuration_hash, ActiveRecord::Base.configurations.default_hash
-    end
-  ensure
-    ENV["RAILS_ENV"] = original_rails_env
-  end
-
   def test_find_db_config_returns_first_config_for_env
     config = ActiveRecord::DatabaseConfigurations.new({
         "test" => {

guides/source/7_0_release_notes.md

@@ -258,6 +258,8 @@ Please refer to the [Changelog][active-job] for detailed changes.
 
 *   Remove deprecated `ActiveRecord::Base.arel_attribute`.
 
+*   Remove deprecated `ActiveRecord::Base.configurations.default_hash`.
+
 ### Deprecations
 
 *   Deprecated `Rails.config.active_job.skip_after_callbacks_if_terminated`.