drupal_set_message の代わりは \Drupal::messenger()->addStatus() - 鼻
Jumpstart Your Drupal 9 Upgrade with Drupal Rector | Palantir.net | Chicago web strategy, design, Drupal development, consulting
Urban's Drupal 9 Upgrade Path. At the Urban Institute, Drupal is our… | by Data@Urban | Medium
![Drupal 9 replace deprecated function drupal_set_message() [#3221131] | Drupal.org](https://www.drupal.org/files/issues/2021-08-23/3221131_before.png "Drupal 9 replace deprecated function drupal_set_message() [#3221131] | Drupal.org")
Drupal 9 replace deprecated function drupal_set_message() [#3221131] | Drupal.org
How to prepare your module for Drupal 9 | ADCI Solutions
![Support render arrays for drupal_set_message() [#2505497] | Drupal.org](https://www.drupal.org/files/issues/Uses__attached_in_render_array_with_drupal_set_message_____Site-Install.png "Support render arrays for drupal_set_message() [#2505497] | Drupal.org")
Support render arrays for drupal_set_message() [#2505497] | Drupal.org
![Replace usages of the deprecated drupal_set_message() function [#2958415] | Drupal.org](https://www.drupal.org/files/issues/2018-04-04/after-applying-patch_1.png "Replace usages of the deprecated drupal_set_message() function [#2958415] | Drupal.org")
Replace usages of the deprecated drupal_set_message() function [#2958415] | Drupal.org
How to check your Drupal 8 site is compatible with 9 version
![Drupal 9 replace deprecated function drupal_set_message() [#3221131] | Drupal.org](https://www.drupal.org/files/issues/2021-08-23/3221131_after.png "Drupal 9 replace deprecated function drupal_set_message() [#3221131] | Drupal.org")
Drupal 9 replace deprecated function drupal_set_message() [#3221131] | Drupal.org
![Drupal 9 Deprecated Code Report - functions drupal_set_message(), Unicode::strtolower(), constant DATETIME_DATETIME_STORAGE_FORMAT, and class Drupal\simpletest\WebTestBase [#3130494] | Drupal.org](https://www.drupal.org/files/issues/2020-05-07/DCAT-patch-apply.png "Drupal 9 Deprecated Code Report - functions drupal_set_message(), Unicode::strtolower(), constant DATETIME_DATETIME_STORAGE_FORMAT, and class Drupal\simpletest\WebTestBase [#3130494] | Drupal.org")
Drupal 9 Deprecated Code Report - functions drupal_set_message(), Unicode::strtolower(), constant DATETIME_DATETIME_STORAGE_FORMAT, and class Drupal\simpletest\WebTestBase [#3130494] | Drupal.org
GitHub - grasmash/drupal8to9-upgrade
How to prepare your module for Drupal 9 | ADCI Solutions
9.8.1. hook_form_alter() add submit and validate for existing form. | Drupal Book
![Drupal 9 Readiness [#3119395] | Drupal.org](https://www.drupal.org/files/issues/2020-03-12/error-before-patch.png "Drupal 9 Readiness [#3119395] | Drupal.org")
Drupal 9 Readiness [#3119395] | Drupal.org
![Drupal 9 Deprecated Code Report [#3042822] | Drupal.org](https://www.drupal.org/files/issues/2019-04-15/Screen%20Shot%202019-04-15%20at%2011.21.28%20PM.png "Drupal 9 Deprecated Code Report [#3042822] | Drupal.org")
Drupal 9 Deprecated Code Report [#3042822] | Drupal.org
![Drupal 9 Compatibility: Fix deprecations [#3198792] | Drupal.org](https://www.drupal.org/files/issues/2021-02-16/Screenshot%202021-02-16%20at%2021.11.14.png "Drupal 9 Compatibility: Fix deprecations [#3198792] | Drupal.org")
Drupal 9 Compatibility: Fix deprecations [#3198792] | Drupal.org
7 - Why don't calls to drupal_set_message() show up after a drupal_goto()? - Drupal Answers
Automate Drupal 9 upgrades
Eurelis.com - Drupal 9 : qu'attendre de Drupal 9 ?
Drupal 9 Contrib Module Readiness Report from April 2020 – mcdwayne
Drupal 7 Module Development Part 7 - Database API displaying data - Daily Dose of Drupal Episode 22 - YouTube
Site Owner's Guide to a Smooth Drupal 9 Upgrade Experience
drupal_set_message() Cheatsheet: Variables, links, and formatting | LevelTen Dallas, TX
Drupal 9 compatibility contribution quickstart guide for Drupal Global Contribution Weekend 2020 | Gábor Hojtsy on Drupal
