Skip to content

Instantly share code, notes, and snippets.

Show Gist options
  • Save knibals/452c0ea8792ce9fbbd7e432cd165f99d to your computer and use it in GitHub Desktop.
Save knibals/452c0ea8792ce9fbbd7e432cd165f99d to your computer and use it in GitHub Desktop.
Load and render responsive image from field in Drupal 8
<?php
function _load_header_image($variables) {
if ($node = $variables['node']) {
// Load main_image
$file = $node->field_main_image->entity;
if ($file) {
$variables = array(
'responsive_image_style_id' => 'header_image',
'uri' => $file->getFileUri(),
);
// The image.factory service will check if our image is valid.
$image = \Drupal::service('image.factory')->get($file->getFileUri());
if ($image->isValid()) {
$variables['width'] = $image->getWidth();
$variables['height'] = $image->getHeight();
}
else {
$variables['width'] = $variables['height'] = NULL;
}
$logo_build = [
'#theme' => 'responsive_image',
'#width' => $variables['width'],
'#height' => $variables['height'],
'#responsive_image_style_id' => $variables['responsive_image_style_id'],
'#uri' => $variables['uri'],
];
// Add the file entity to the cache dependencies.
// This will clear our cache when this entity updates.
$renderer = \Drupal::service('renderer');
$renderer->addCacheableDependency($logo_build, $file);
// Return the render array as block content.
return $logo_build;
}
}
return NULL;
}
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment