Drupal 9

Problem/Motivation

• In the sandbox environment, the module displays available views (e.g., for /taxonomy/term/%, it allows selecting "View Taxonomy term: Has taxonomy term"). However:
  • When selecting a taxonomy term from the dropdown list and navigating to it, a blank page appears.
  • The problematic URL looks like /taxonomy/term/2?tid=2, but it does not render any content.
  • Meanwhile, the URL /taxonomy/term/2 works correctly and displays the term's content.
• Attempts to modify the settings for /taxonomy/term/% (e.g., "Provide default value" or "Display all results for the specified field") do not resolve the issue.

Steps to reproduce

1. Install the module in the sandbox environment and enable a view for /taxonomy/term/%.
2. Configure the view with taxonomy term filtering.
3. Select a taxonomy term from the dropdown list.
4. Navigate to the generated URL, e.g., /taxonomy/term/2?tid=2.
5. Observe that the page is blank in the sandbox environment, even though /taxonomy/term/2 displays the content correctly.
6. Deploy the same configuration to the production environment.
7. Visit the page /admin/config/user-interface/filter_harmonizer and confirm that the module does not display available views for configuration.

Proposed resolution

• Investigate and ensure compatibility of the module with the Drupal core version in the production environment.
• Fix the issue with the generated URL containing an additional ?tid=2 parameter so that /taxonomy/term/2?tid=2 renders the same content as /taxonomy/term/2.
• Update the module to ensure it displays available views for configuration in the production environment.
• Provide documentation on supported configurations and potential limitations related to additional URL parameters.

Remaining tasks

• Investigate why the module behaves differently in the sandbox and production environments.
• Fix URL generation and handling of the tid parameter.
• Test the updated module in both sandbox and production environments.
• Update the module documentation (if needed).

User interface changes

• No user interface changes are expected. The focus is on rendering content and URL behavior.

API changes

• No API changes are expected.

Data model changes

• No changes to the data model are expected.

production environment: