Drupal: Upgrade to a new Major Revision

[last updated: 2023-12-31]
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• Drupal 10 requires at least PHP 8.1.

• upgrade drupal: Upgrade to Drupal 9:
  • You may go from 7 to 9, skipping 8...
  • starting from here: https://www.drupal.org/docs/upgrading-drupal
    • prepare your site: https://www.drupal.org/docs/upgrading-drupal/prepare-major-upgrade
      • Deprecation checking probably irrelevant for my site: https://www.drupal.org/docs/upgrading-drupal/prepare-major-upgrade/depre...
      • core branches issues irrelevant for my site
      • Twig: is a "template engine for PHP"
        Twig-1 is used in d-8, and twig-2 in d-9
        Assuming (hoping) this is irrelevant for my site.
    • upgrade from drupal-7: https://www.drupal.org/docs/upgrading-drupal/upgrading-from-drupal-6-or-...
    • https://www.drupal.org/docs/upgrading-drupal/upgrading-from-drupal-6-or-...
  • Prepare for drupal-9 - probably irrelevant for my site: https://www.drupal.org/docs/updating-drupal/how-to-prepare-your-drupal-7...

• n/a: drush support to upgrade from 7 to 8 - must "migrate" vs. upgrade??: https://www.drupal.org/project/migrate_upgrade

  
  misc:

  
  https://www.drupal.org/docs/upgrading-drupal/prepare-major-upgrade/depre...
  https://www.drupal.org/docs/updating-drupal/how-to-prepare-your-drupal-7...
  https://www.drupal.org/docs/upgrading-drupal/prepare-major-upgrade/prepa...

• migrate 8 to 9: https://www.drupal.org/docs/upgrading-drupal/drupal-8-and-higher
  https://www.drupal.org/about/9/from-8
• https://www.drupal.org/psa-2023-06-07
  https://www.drupal.org/docs/upgrading-drupal/upgrading-from-drupal-6-or-...
  https://www.drupal.org/docs/upgrading-drupal/upgrading-from-drupal-6-or-...
• https://www.drupal.org/docs/8/upgrade/upgrading-from-drupal-6-or-7-to-dr...
• https://www.drupal.org/docs/8/upgrade/known-issues-when-upgrading-from-d...
• https://www.drupal.org/forum/support/upgrading-drupal/2017-05-09/upgradi...
• https://www.drupal.org/docs/drupal-apis/migrate-api/executing-migrations
• migrate Views: https://www.drupal.org/project/views_migration
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• Other resources (ie. outside drupal.org):
  • 7 to 10: https://dev.acquia.com/blog/what-does-it-take-upgrade-drupal-7-drupal-10
  • https://wikihandbooks.com/drupal/intro_drupal.html#d7vs9
    https://www.morpht.com/blog/drupal-and-composer-part-1-understanding-com...
  • upgrade 8 or 9 to 10: https://www.vardot.com/en/ideas/blog/upgrading-drupal-8-drupal-9-and-dru...
    https://www.acquia.com/blog/how-upgrade-drupal-10
  • upgrade from 7 to 10: https://salsa.digital/insights/a-10-step-guide-for-upgrading-drupal-7-to...
  • migrate from 7 to 9: https://www.axelerant.com/blog/ultimate-guide-migrate-drupal-7-drupal-9
    https://www.tpximpact.com/knowledge-hub/insights/drupal-7-to-drupal-9-mi...
  • "manual update": https://www.inmotionhosting.com/support/edu/drupal/update-drupal-manually/
  • upgrade from 7 to 8: https://www.cloudways.com/blog/upgrade-drupal-7-to-drupal-8/
  • Drupal 10 ultimate guide: https://www.vardot.com/en/ideas/blog/ultimate-drupal-10-guide
  • migrate 7 to 8: https://webdev.iac.gatech.edu/drupal-8-migration
  • migrate Drupal to Wordpress: https://www.greengeeks.com/tutorials/migrate-drupal-wordpress/
  • https://alvinalexander.com/drupal/how-to-upgrade-drupal-6-website-to-dru...>
  • https://affinitybridge.com/blog/migrating-drupal-6-drupal-8
  • https://drupalize.me/topic/upgrade-drupal-8

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