Make config.action_view.button_to_generates_button_tag work

actionview/lib/action_view/railtie.rb

@@ -39,6 +39,13 @@ class Railtie < Rails::Engine # :nodoc:
       end
     end
 
+    config.after_initialize do |app|
+      button_to_generates_button_tag = app.config.action_view.delete(:button_to_generates_button_tag)
+      unless button_to_generates_button_tag.nil?
+        ActionView::Helpers::UrlHelper.button_to_generates_button_tag = button_to_generates_button_tag
+      end
+    end
+
     config.after_initialize do |app|
       ActionView::Helpers::AssetTagHelper.image_loading = app.config.action_view.delete(:image_loading)
       ActionView::Helpers::AssetTagHelper.image_decoding = app.config.action_view.delete(:image_decoding)
@@ -81,13 +88,6 @@ class Railtie < Rails::Engine # :nodoc:
       PartialRenderer.collection_cache = app.config.action_controller.cache_store
     end
 
-    initializer "action_view.button_to_generates_button_tag" do |app|
-      ActiveSupport.on_load(:action_view) do
-        ActionView::Helpers::UrlHelper.button_to_generates_button_tag =
-          app.config.action_view.delete(:button_to_generates_button_tag)
-      end
-    end
-
     config.after_initialize do |app|
       enable_caching = if app.config.action_view.cache_template_loading.nil?
         app.config.cache_classes

guides/source/configuring.md

@@ -734,6 +734,8 @@ Defaults to `'signed cookie'`.
 
 * `config.action_view.preload_links_header` determines whether `javascript_include_tag` and `stylesheet_link_tag` will generate a `Link` header that preload assets. This defaults to `true`.
 
+* `config.action_view.button_to_generates_button_tag` determines whether `button_to` will render `<button>` element, regardless of whether or not the content is passed as the first argument or as a block.
+
 ### Configuring Action Mailbox
 
 `config.action_mailbox` provides the following configuration options:
@@ -1040,6 +1042,7 @@ text/javascript image/svg+xml application/postscript application/x-shockwave-fla
 `config.load_defaults` sets new defaults up to and including the version passed. Such that passing, say, `6.0` also gets the new defaults from every version before it.
 
 #### For '6.2', defaults from previous versions below and:
+- `config.action_view.button_to_generates_button_tag`: `true`
 - `config.active_support.key_generator_hash_digest_class`: `OpenSSL::Digest::SHA256`
 
 #### For '6.1', defaults from previous versions below and:
@@ -1100,6 +1103,7 @@ text/javascript image/svg+xml application/postscript application/x-shockwave-fla
 - `config.action_dispatch.cookies_same_site_protection`: `nil`
 - `config.action_mailer.delivery_job`: `ActionMailer::DeliveryJob`
 - `config.action_view.form_with_generates_ids`: `false`
+- `config.action_view.button_to_generates_button_tag`: `false`
 - `config.active_job.retry_jitter`: `0.0`
 - `config.active_job.skip_after_callbacks_if_terminated`: `false`
 - `config.action_mailbox.queues.incineration`: `:action_mailbox_incineration`

railties/lib/rails/generators/rails/app/templates/config/initializers/new_framework_defaults_6_2.rb.tt

@@ -6,8 +6,9 @@
 #
 # Read the Guide for Upgrading Ruby on Rails for more info on each option.
 
-# button_to view helpers consistently render <button> elements.
-# Rails.application.config.action_view.button_to_generates_button_tag = false
+# `button_to` view helper will render `<button>` element, regardless of whether
+# or not the content is passed as the first argument or as a block.
+# Rails.application.config.action_view.button_to_generates_button_tag = true
 
 # Change the digest class for they key generators to `OpenSSL::Digest::SHA256`.
 # Changing this defaults means invalidate all encripted messages generated by

railties/test/application/configuration_test.rb

@@ -2371,6 +2371,31 @@ class ::DummySerializer < ActiveJob::Serializers::ObjectSerializer; end
       assert_equal true, ActionView::Helpers::FormTagHelper.default_enforce_utf8
     end
 
+    test "ActionView::Helpers::UrlHelper.button_to_generates_button_tag is true by default" do
+      app "development"
+      assert_equal true, ActionView::Helpers::UrlHelper.button_to_generates_button_tag
+    end
+
+    test "ActionView::Helpers::UrlHelper.button_to_generates_button_tag is false by default for upgraded apps" do
+      remove_from_config '.*config\.load_defaults.*\n'
+      add_to_config 'config.load_defaults "6.1"'
+      app "development"
+
+      assert_equal false, ActionView::Helpers::UrlHelper.button_to_generates_button_tag
+    end
+
+    test "ActionView::Helpers::UrlHelper.button_to_generates_button_tag can be configured via config.action_view.button_to_generates_button_tag" do
+      remove_from_config '.*config\.load_defaults.*\n'
+
+      app_file "config/initializers/new_framework_defaults_6_2.rb", <<-RUBY
+        Rails.application.config.action_view.button_to_generates_button_tag = true
+      RUBY
+
+      app "development"
+
+      assert_equal true, ActionView::Helpers::UrlHelper.button_to_generates_button_tag
+    end
+
     test "ActionView::Helpers::AssetTagHelper.image_loading is nil by default" do
       app "development"
       assert_nil ActionView::Helpers::AssetTagHelper.image_loading