Summary

We've found some instances where SlideImage is extended for an instance not needing the image, or allowing for additional options. Currently the validation is strict in requiring the SlideImage record.

Proposed Solution

Additional logic in the SlideImage::validate() method to allow for customization of the required ImageID field.

_config.yml

Dynamic\FlexSlider\Model\SlideImage
  require_image: false

# MyPage extends \Page
Foo\Bar\MyPage:
  extensions:
    - Dynamic\FlexSlider\ORM\FlexSlider
  require_image: true

Validation should check if the related object has a config override for require_image. If no config is found, it should fall back to the SlideImage's config for require_image. This allows for a global setting (default of true) as well as model specific overrides.