Skip to main content
Drupal 9 to 10 Transition Made Simple: Real Code Insights

Drupal 9 to 10 Transition Made Simple: Real Code Insights

Have you found yourself gearing up for the transition from Drupal 9 to Drupal 10, only to be met with complexities and uncertainties along the way? You're not alone in this journey. Making the switch between major versions of a CMS can feel like navigating through a maze of code and updates, leaving you puzzled and overwhelmed. But how do you navigate the upgrade process seamlessly? This move unlocks a plethora of new features, improved security, and a more streamlined user experience. Worry not, Drupal enthusiasts! This guide provides real code insights to ensure a smooth transition from Drupal 9 to 10.

1. Understanding the Drupal Upgrade Process

Upgrading your Drupal website from version 9 to 10 can seem like a daunting task, but with the right approach, it can be a smooth transition. Understanding the Drupal upgrade process is key to ensuring a successful migration without any hiccups.

1.1. Why Upgrade to the Latest Version?

Before delving into the specifics of the upgrade process, let's highlight the importance of upgrading to the latest version of Drupal. The latest version not only provides enhanced security features but also offers new functionalities and improvements that can benefit your Drupal site in the long run.

1.2. Key Steps in the Upgrade Process

  •  Assess Your Current Setup: Begin by evaluating your current Drupal site to identify any custom modules or contrib modules that may need updating for compatibility with the latest Drupal version. This step is crucial to avoid any conflicts during the upgrade.
  • Updating Core and Contrib Modules: Ensure that both the Drupal core and contrib modules are updated to their latest versions before initiating the upgrade process. This step will help in maintaining the integrity of your site's functionality post-upgrade.
  • Reviewing Permissions: Go through the permissions.yml file to verify and adjust permission callbacks as needed. It's essential to ensure that the permission settings are correctly configured to avoid any permission-related issues post-upgrade.
  • Checking Compatibility: Verify with your hosting provider if your server environment meets the requirements for the upgrade. It's crucial to ensure that your hosting environment can support the latest version of Drupal without any compatibility issues.
  • Testing and Debugging: Once the upgrade process is complete, re-run tests on your site to identify any issues or errors that may have arisen during the transition. Addressing these issues promptly will help in maintaining a smooth user experience on your Drupal site.

 "Upgrading Drupal is not just about updating the core; it's about ensuring a seamless transition for your site and its users."  Drupal Maintainer

Familiarize yourself with the official upgrade guide ( to get a detailed roadmap.

2. Evaluating the Upgrade Status with Contributed Modules

When transitioning from Drupal 9 to Drupal 10, evaluating the upgrade status with contributed modules is a crucial step in ensuring a smooth and successful migration process. Contributed modules play a significant role in the functionality and customization of a Drupal site, so it's important to assess their compatibility with the latest version.

Not all contributed modules from Drupal 9 might be compatible with Drupal 10 yet. Use tools like Upgrade Status Module ( to check compatibility and identify modules needing updates or replacements.

"Evaluating the upgrade status of contributed modules is a crucial step in ensuring a seamless transition to Drupal 10."

2.1.  Managing Permissions in Drupal Migration

During the process of migrating from Drupal 9 to 10, managing permissions is a critical aspect that requires careful attention.  Permissions can change during upgrades. Carefully review and migrate user roles and permissions during the process. Utilize tools like the Migrate Permissions module ( to streamline this step.

3. Implementing Custom Modules and Themes in the Upgrade

Custom modules and themes require special attention during the upgrade. Test them thoroughly in a development environment to ensure compatibility with Drupal 10. You might need to update code or adjust configurations for them to function seamlessly.  Let's delve into the key considerations and steps for implementing custom modules and themes during the upgrade:

  • Reviewing Custom Modules and Themes :  before initiating the upgrade, conduct a thorough review of all custom modules and themes utilized in your Drupal site. Ensure compatibility and readiness for migration to the latest version of Drupal.
  • Update Compatibility with Drupal 10 :  check if your custom modules and themes are compatible with the latest version of Drupal. Make necessary adjustments to align functionalities and configurations with Drupal 10 standards.
  • Ensuring Code Cleanliness : evaluate the existing code of custom modules and themes to guarantee cleanliness and adherence to Drupal coding standards. Address any deprecated code or features that may impact the upgrade process.
  • Testing and Validation : perform rigorous testing on custom modules and themes post-upgrade to verify their functionality and compatibility in the new Drupal environment. Use tools like the Upgrade Status module to streamline this process.
  • Implementing Best Practices :  follow Drupal best practices for custom module development and theme implementation in Drupal 10. Leverage the latest features and APIs while optimizing performance and security protocols.
  • Resource Optimization : optimize custom modules and themes for efficiency and resource utilization in Drupal 10. Fine-tune configurations, permissions, and callback functions to enhance the overall performance of your Drupal website.
  • Client-Specific Customizations :  consider any client-specific requirements or customizations when implementing modules and themes during the upgrade. Ensure seamless integration with existing systems and configurations.

Incorporating these steps and guidelines into your transition strategy will facilitate a smoother and more successful migration to Drupal 10, empowering you to harness the full potential of the latest features and enhancements.

4. Testing and Error Handling in the New Drupal Version

Once you've successfully upgraded your Drupal site to the latest version, it's crucial to thoroughly test and handle any potential errors that may arise during the transition process. Proper testing and error handling are essential to ensure a smooth upgrade without disrupting the functionality of your site.

4.1.  Testing Procedures

Before making the upgrade live, it's recommended to perform comprehensive testing to identify and address any issues. Here are some key testing procedures to consider:

  • Functionality Testing:  test all essential functionalities of your site to ensure they work as expected.  Check user interactions, forms, authentication, and content creation tools.
  • Design Testing :  verify that the design elements, layouts, and themes appear correctly on the updated Drupal version. Ensure compatibility with different devices and browsers.
  • Performance Testing : evaluate the site's performance metrics, such as page load speed and server response times. Optimize performance by analyzing and resolving any bottlenecks.

4.2. Error Handling Strategies

During the testing phase, it's common to encounter errors or unexpected behaviors. Here are some strategies to effectively handle errors in the new Drupal version: 

  • Logging and Monitoring:  implement robust logging mechanisms to track errors and monitor system behavior. Regularly review logs to identify and address any recurring issues.
  • Error Recovery: develop error recovery mechanisms to gracefully handle exceptions and prevent site crashes. Provide informative error messages to aid in troubleshooting and resolution.
  • User Notifications:  Notify users about any temporary disruptions or maintenance activities during the upgrade process. Communicate potential downtime windows in advance to minimize user impact.

"Thorough testing and proactive error handling are key to a successful Drupal version upgrade."

Are you ready to take your Drupal site to the next level with version 10? Armed with the insights provided in this article, you can seamlessly transition and harness the full power of Drupal 10's latest features and enhancements. There's no need to delay—begin your upgrade journey today!

And guess what? We've recently upgraded our own website to Drupal 10, so we understand the process firsthand. If you need assistance or want a quote for your upgrade, don't hesitate to reach out to us. Remember, upgrading isn't just about keeping up—it's about future-proofing your site for long-term success. Unlock your website's full potential by upgrading to Drupal 10 now!

Add new comment

Restricted HTML

  • Allowed HTML tags: <a href hreflang> <em> <strong> <cite> <blockquote cite> <code> <ul type> <ol start type> <li> <dl> <dt> <dd> <h2 id> <h3 id> <h4 id> <h5 id> <h6 id>
  • Lines and paragraphs break automatically.
  • Web page addresses and email addresses turn into links automatically.

We design, build and support digital products for clients who want to make a positive impact in their industry. Creative with technology, we develop great solutions to help our clients grow and especially by strengthening our relationships based on continuous improvement, maintenance, support and hosting services.

Follow us