Problem/Motivation

@tim.plunkett in #2782891-61: The Page Title block's title behaves in a confusing way with Settings Tray and the Help block incorrectly has Settings Tray styling:

+1, but can you open a follow-up to discuss the differences and a way to resolve them? As the only implementation of this, we need to be clear about how others should use multiple forms

This is that follow-up. We need to clarify these things (quoting @tim.plunkett again, from #2782891-59: The Page Title block's title behaves in a confusing way with Settings Tray and the Help block incorrectly has Settings Tray styling):

  1. +++ b/core/modules/outside_in/outside_in.module
@@ -100,8 +100,16 @@ function outside_in_entity_type_build(array &$entity_types) {
+  if (\Drupal::service('plugin.manager.block')->createInstance($variables['plugin_id'])->hasFormClass('off_canvas')) {

+++ b/core/modules/outside_in/src/Access/BlockPluginHasOffCanvasFormAccessCheck.php
@@ -0,0 +1,29 @@
+    return AccessResult::allowedIf($block_plugin->hasFormClass('off_canvas'));

    Now that I look again, there's even more robust fallback code in \Drupal\Core\Plugin\PluginFormFactory::createInstance(). These two different has FormClass checks are different, and that is odd. Not the fault of this code though... 

  2. +++ b/core/modules/outside_in/outside_in.module
@@ -139,17 +147,40 @@ function outside_in_toolbar_alter(&$items) {
+      // Otherwise fall back to the built-in form for the block plugin.
+      default:
+        $definition['forms']['off_canvas'] = $definition['class'];
+        break;

    This is an interesting change from HEAD.

    \Drupal\Core\Plugin\PluginWithFormsTrait::getFormClass() already provides it's own fallback mechanism, and in HEAD that is relied upon. This changes it so that we explicitly declare the "configure" form as used by "off_canvas" operation.

    This isn't bad, but possibly slightly confusing.
    That said, the entire concept of multiple plugin forms was added to core to support off_canvas.

Proposed resolution

TBD

Remaining tasks

TBD

User interface changes

None.

API changes

None.

Data model changes

None.

Comments

Wim Leers created an issue. See original summary.

Version: 8.4.x-dev » 8.5.x-dev

Drupal 8.4.0-alpha1 will be released the week of July 31, 2017, which means new developments and disruptive changes should now be targeted against the 8.5.x-dev branch. For more information see the Drupal 8 minor version schedule and the Allowed changes during the Drupal 8 release cycle.

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Drupal 8.8.0-alpha1 will be released the week of October 14th, 2019, which means new developments and disruptive changes should now be targeted against the 8.9.x-dev branch. (Any changes to 8.9.x will also be committed to 9.0.x in preparation for Drupal 9’s release, but some changes like significant feature additions will be deferred to 9.1.x.). For more information see the Drupal 8 and 9 minor version schedule and the Allowed changes during the Drupal 8 and 9 release cycles.

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Version: 9.4.x-dev » 9.5.x-dev

Drupal 9.4.0-alpha1 was released on May 6, 2022, which means new developments and disruptive changes should now be targeted for the 9.5.x-dev branch. For more information see the Drupal core minor version schedule and the Allowed changes during the Drupal core release cycle.

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Drupal 9.5.0-beta2 and Drupal 10.0.0-beta2 were released on September 29, 2022, which means new developments and disruptive changes should now be targeted for the 10.1.x-dev branch. For more information see the Drupal core minor version schedule and the Allowed changes during the Drupal core release cycle.

Version: 10.1.x-dev » 11.x-dev

Drupal core is moving towards using a “main” branch. As an interim step, a new 11.x branch has been opened, as Drupal.org infrastructure cannot currently fully support a branch named main. New developments and disruptive changes should now be targeted for the 11.x branch, which currently accepts only minor-version allowed changes. For more information, see the Drupal core minor version schedule and the Allowed changes during the Drupal core release cycle.

smustgrave’s picture

smustgrave commented
Status: Active » Postponed (maintainer needs more info)
Issue tags: +stale-issue-cleanup

Thank you for creating this issue to improve Drupal.

We are working to decide if this task is still relevant to a currently supported version of Drupal. There hasn't been any discussion here for over 8 years which suggests that this has either been implemented or is no longer relevant. Your thoughts on this will allow a decision to be made.

Since we need more information to move forward with this issue, the status is now Postponed (maintainer needs more info). If we don't receive additional information to help with the issue, it may be closed after three months.

Thanks!

Version: 11.x-dev » main

Drupal core is now using the main branch as the primary development branch. New developments and disruptive changes should now be targeted to the main branch.

Read more in the announcement.