Fixes #3946 Whitescreen if az_person not installed.

[trackleft]

Description

Checking if az_person is enabled before counting on az_person fields.

Release notes

This release fixes a critical issue affecting AZ Quickstart 2.12.0 sites that do not have the `az_person` module installed that causes a fatal error to occur when users log in to the site.

Related issues

Closes #3946

How to test

Types of changes

Arizona Quickstart (install profile, custom modules, custom theme)

• Patch release changes
  • Bug fix
  • Accessibility, performance, or security improvement
  • Critical institutional link or brand change
  • Adding experimental module
  • Update experimental module
• Minor release changes
  • New feature
  • Breaking or visual change to existing behavior
  • Upgrade experimental module to stable
  • Enable existing module by default or database update
  • Non-critical brand change
  • New internal API or API improvement with backwards compatibility
  • Risky or disruptive cleanup to comply with coding standards
  • High-risk or disruptive change (requires upgrade path, risks regression, etc.)
• Other or unknown
  • Other or unknown

Drupal core

• Patch release changes
  • Security update
  • Patch level release (non-security bug-fix release)
  • Patch removal that's no longer necessary
• Minor release changes
  • Major or minor level update
• Other or unknown
  • Other or unknown

Drupal contrib projects

• Patch release changes
  • Security update
  • Patch or minor level update
  • Add new module
  • Patch removal that's no longer necessary
• Minor release changes
  • Major level update
• Other or unknown
  • Other or unknown

Checklist

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.
• All new and existing tests passed.
• My change requires release notes.

[joeparsons]

The affected file was added in 2.12.x only as part of #3764. If this issue also affects 2.11.x, we'll need a separate PR for that.

This should not affect 2.11.x

[tadean]

I think to prevent other similar issues we may want to check if the field exists on the bundle, rather than checking if the module is enabled.

[tadean]

Seems to work in cases where az_person does not exist, and field_az_netid does not exist. Thanks @trackleft !