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Fix Undefined Array Key Warning in generateFromRequest Method of FileNameGenerator Class

Open on Drupal.org →
Created on 2 September 2024, 8 months ago

Problem/Motivation

The generateFromRequest method in the FileNameGenerator class of the ckeditor5_premium_features module throws a warning: Undefined array key 1. This issue occurs when the route name does not contain a dot (.), causing the explode('.', $route_name) function to return an array with fewer than two elements. Consequently, attempting to access $route_param[1] results in a PHP warning. This warning can cause unexpected behavior and errors when generating file names based on route and entity parameters.

Steps to Reproduce

  1. Use a route name that does not include a dot, such as protected_pages_login_page.
  2. Call the generateFromRequest method in the context where this route name is active.
  3. Observe the PHP warning: Undefined array key 1 in FileNameGenerator->generateFromRequest().

Proposed Resolution

  • Update the generateFromRequest method to check if the $route_param array has more than one element before attempting to access $route_param[1].
  • Implement fallback logic to handle cases where the route name format does not include a dot, defaulting to a common entity name or another logical fallback.
  • Example modification:
public function generateFromRequest(): string {
    $route_name = $this->routeMatch->getRouteName();
    $route_param = explode('.', $route_name);

    // Safely check if $route_param has enough elements
    if (count($route_param) > 1) {
        $entity = $this->routeMatch->getParameter($route_param[1]);
    } else {
        // Fallback if the route name doesn't contain a dot
        $entity = $this->routeMatch->getParameter('node'); // or use another default parameter
    }

    try {
        if ($entity) {
            $alias = $entity->toUrl()->toString();
            return $this->convertUrlToFileName($alias);
        }
    } catch (\Exception $e) {
        // Handle exceptions if necessary
    }

    return self::DEFAULT_FILENAME;
}
  • This change will ensure that the function can handle route names without dots and avoid PHP warnings related to undefined array keys.

Remaining Tasks

  1. Implement the proposed changes in the generateFromRequest method.
  2. Write and execute unit tests to verify the fix.
  3. Review code for adherence to Drupal coding standards.
  4. Update documentation (if necessary) to reflect the changes.
  5. Test the updated functionality in various environments to ensure robustness.

User Interface Changes

None. This change affects backend logic only and has no direct impact on the user interface.

API Changes

None. The method signature and behavior of generateFromRequest remain consistent from an API perspective.

Data Model Changes

None. There are no changes to the data model associated with this update.

🐛 Bug report
Status

Active

Version

1.3

Component

Code

Created by

🇬🇧United Kingdom meladawy

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