Altering image style for one image out of multiple

hook_blazy_alter() no longer works, which is surprising since this wasn't a major version upgrade.

Or I guess it does, but everything totally moved around:

Previous

function custom_blazy_alter(array &$build, array $settings = []) {
  if (
    $settings['entity_type'] === 'commerce_product' &&
    $settings['field_name'] === 'field_media' &&
    $settings['view_mode'] === 'default' &&
    $build['#delta'] === 0
  ) {
    /** @var \Drupal\blazy\BlazySettings $blazies */
    $blazies = $build['#build']['settings']['blazies'];

    $product_hero_style = ImageStyle::load('product_hero');

    $blazies->set('image.style', $product_hero_style);
  }
}

At some point now it needs to be

function custom_blazy_alter(array &$build, array $settings = []) {
  /** @var \Drupal\blazy\BlazySettings $blazies */
  $blazies = $settings['blazies'];
  $field = $blazies->get('field');

  if (
    $field['entity_type'] === 'commerce_product' &&
    $field['view_mode'] === 'full' &&
    $field['name'] === 'field_media' &&
    $build['#delta'] === 0
  ) {
    $product_hero_style = ImageStyle::load('product_hero');

    $blazies->set('image.style', $product_hero_style);
  }
}

Hm, might be borked somewhere, not sure :)

Things moved very fast during dev storms last time.

However there is a new hook_blazy_item_alter:
https://git.drupalcode.org/project/blazy/-/blob/8.x-2.21/blazy.api.php?r...

I found it more versatile for halfway alter, that is when you have enough info to target item alteration. Seen and proven at zooming.module for sample IIRC.

Hope that is closer and more effective than hook_blazy_alter since you don't have to manually load image stylenper item as it is already loaded at container once.

Let me know if any more info needed?

hook_blazy_item_alter does not work, the image style is not changed.

Here's what I tried:

function custom_blazy_item_alter(array &$settings, array &$attributes, array &$item_attributes) {
  /** @var \Drupal\blazy\BlazySettings $blazies */
  $blazies = &$settings['blazies'];
  $field = $blazies->get('field');

  // Switch the first product media item to "product_hero".
  if (
    $field['entity_type'] === 'commerce_product' &&
    $field['view_mode'] === 'full' &&
    $field['name'] === 'field_media' &&
    $blazies->get('delta') === 0
  ) {
    $product_hero_style = ImageStyle::load('product_hero');

    $blazies->set('image.style', $product_hero_style);
  }
}

Perhaps the image URL needs settings too:

  if ($blazies->get('delta') == 1) {
    $style = blazy()->load('thumbnail', 'image_style');
    $uri = $blazies->get('image.uri');
    $url = \Drupal\blazy\Blazy::url($uri, $style);
    
    // The $settings might not kick in, but in case needed downstream, set it.
    $settings['image_style'] = 'thumbnail';
    $blazies->set('image.style', $style)
      ->set('image.url', $url);
  }

That worked, thank you!

Setting image.style doesn't appear to change anything, it's image.uri that does it.

Things changed since 2.5. That would do for now :)

Thanks for the follow up.

Automatically closed - issue fixed for 2 weeks with no activity.