activerecord: Support insert_all on relation (for Rails 7.2) (#661)

ActiveRecord supports insert and upsert methods on relation classes
(AssociationRelation and CollectionProxy) since v6.1.

The implementation of insert_all has been changed since v7.2. The
implementation was moved to AR::Relation from AR::Persistence.  So types
follow the new structure.

refs:

* #658
* rails/rails#38899
* rails/rails#51805
* https://github.com/rails/rails/blob/v6.1.7.8/activerecord/CHANGELOG.md

gems/activerecord/7.2/_test/test.rb

@@ -9,6 +9,9 @@ class ApplicationRecord < ActiveRecord::Base
   end
 
   class User < ApplicationRecord
+    # @dynamic articles
+    has_many :articles
+
     enum status: { active: 0, inactive: 1 }, _suffix: true
     enum :role, { admin: 0, user: 1 }, _prefix: true
     enum :classify, %w[hoge fuga], _default: "hoge"
@@ -24,6 +27,9 @@ class User < ApplicationRecord
     }
   end
 
+  class Article < ApplicationRecord
+  end
+
   User.where.missing.to_sql
   User.deterministic_encrypted_attributes
   User.source_attribute_from_preserved_attribute(:phrase)
@@ -38,6 +44,12 @@ class User < ApplicationRecord
   user.encrypted_attribute?(:secret)
   user.decrypt
   user.ciphertext_for(:token)
+  user.articles.insert({ id: 1, name: 'James' }, returning: %i[id name], unique_by: :id, record_timestamps: true)
+  user.articles.insert!({ id: 1, name: 'James' }, returning: %i[id name], record_timestamps: true)
+  user.articles.insert_all([{ id: 1, name: 'James' }], returning: %i[id name], unique_by: :id, record_timestamps: true)
+  user.articles.insert_all!([{ id: 1, name: 'James' }], returning: %i[id name], record_timestamps: true)
+  user.articles.upsert({ id: 1, name: 'James' }, returning: %i[id name], unique_by: :id, record_timestamps: true)
+  user.articles.upsert_all([{ id: 1, name: 'James' }], returning: %i[id name], unique_by: :id, record_timestamps: true)
 
   user = User.new
   user.normalize_attribute(:email)

gems/activerecord/7.2/_test/test.rbs

@@ -7,5 +7,18 @@ module Test
 
     class ActiveRecord_Relation < ::ActiveRecord::Relation
     end
+
+    def articles: () -> Article::ActiveRecord_Associations_CollectionProxy
+  end
+
+  class Article < ApplicationRecord
+    extend ::ActiveRecord::Base::ClassMethods[Article, ActiveRecord_Relation, Integer]
+
+    class ActiveRecord_Relation < ::ActiveRecord::Relation
+    end
+
+    class ActiveRecord_Associations_CollectionProxy < ::ActiveRecord::Associations::CollectionProxy
+      include ::ActiveRecord::Relation::Methods[Article, Integer]
+    end
   end
 end

gems/activerecord/7.2/activerecord-7.2.rbs

@@ -6,6 +6,15 @@ module ActiveRecord
     extend Normalization::ClassMethods
   end
 
+  class Relation
+    def insert: (untyped attributes, ?unique_by: untyped?, ?returning: untyped?, ?record_timestamps: bool?) -> untyped
+    def insert_all: (untyped attributes, ?unique_by: untyped?, ?returning: untyped?, ?record_timestamps: bool?) -> untyped
+    def insert!: (untyped attributes, ?returning: untyped?, ?record_timestamps: bool?) -> untyped
+    def insert_all!: (untyped attributes, ?returning: untyped?, ?record_timestamps: bool?) -> untyped
+    def upsert: (untyped attributes, ?unique_by: untyped?, ?returning: untyped?, ?record_timestamps: bool?) -> untyped
+    def upsert_all: (untyped attributes, ?unique_by: untyped?, ?returning: untyped?, ?record_timestamps: bool?) -> untyped
+  end
+
   class Relation
     module QueryMethods
       def with_recursive: (*untyped) -> untyped
@@ -95,22 +104,18 @@ module ActiveRecord
                      ?connection_pool: ConnectionAdapters::ConnectionPool?) -> void
   end
 
-  module Persistence
-    extend ActiveSupport::Concern
-
-    module ClassMethods
-      def insert: (untyped attributes, ?unique_by: untyped?, ?returning: untyped?, ?record_timestamps: bool?) -> untyped
+  module Querying
+    def insert: (untyped attributes, ?unique_by: untyped?, ?returning: untyped?, ?record_timestamps: bool?) -> untyped
 
-      def insert_all: (untyped attributes, ?unique_by: untyped?, ?returning: untyped?, ?record_timestamps: bool?) -> untyped
+    def insert_all: (untyped attributes, ?unique_by: untyped?, ?returning: untyped?, ?record_timestamps: bool?) -> untyped
 
-      def insert!: (untyped attributes, ?returning: untyped?, ?record_timestamps: bool?) -> untyped
+    def insert!: (untyped attributes, ?returning: untyped?, ?record_timestamps: bool?) -> untyped
 
-      def insert_all!: (untyped attributes, ?returning: untyped?, ?record_timestamps: bool?) -> untyped
+    def insert_all!: (untyped attributes, ?returning: untyped?, ?record_timestamps: bool?) -> untyped
 
-      def upsert: (untyped attributes, ?unique_by: untyped?, ?returning: untyped?, ?record_timestamps: bool?) -> untyped
+    def upsert: (untyped attributes, ?unique_by: untyped?, ?returning: untyped?, ?record_timestamps: bool?) -> untyped
 
-      def upsert_all: (untyped attributes, ?unique_by: untyped?, ?returning: untyped?, ?record_timestamps: bool?) -> untyped
-    end
+    def upsert_all: (untyped attributes, ?unique_by: untyped?, ?returning: untyped?, ?record_timestamps: bool?) -> untyped
   end
 
   module Querying