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rpayanm/ajax-callback-di.md

Created January 8, 2020 13:46
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  1. rpayanm created this gist Jan 8, 2020.
    12 changes: 12 additions & 0 deletions ajax-callback-di.md
    View file
    Original file line number Diff line number Diff line change
    @@ -0,0 +1,12 @@
    ```
    private $service;
    public function __construct($service) {
    $this->service = $service;
    }
    Call to a member function ...() on null in Drupal\...\Form\...->buildForm()
    ```

    The problem is is your use of private. Don't use it, use protected. Drupal has a special logic to prevent services from being serialized but it doesn't work properly on private properties, as they are invisible to the trait that is used for that.