From b8a707e4c5f912a8e24d08144263cb5dd4ac48fc Mon Sep 17 00:00:00 2001
From: Eric Bremner <ebremner@uwaterloo.ca>
Date: Mon, 29 Nov 2021 04:29:34 +0000
Subject: [PATCH] ISTWCMS-5204: ensuring that image styles are created so that
it can be used with background images even when the image style has not be
rendered on a page
---
uw_cfg_common.module | 42 ++++++++++++++++++++++++++++++++++++++++++
1 file changed, 42 insertions(+)
diff --git a/uw_cfg_common.module b/uw_cfg_common.module
index 00276188..1288002e 100644
--- a/uw_cfg_common.module
+++ b/uw_cfg_common.module
@@ -99,6 +99,48 @@ function uw_cfg_common_entity_presave(EntityInterface $entity) {
\Drupal::service('plugin.manager.menu.link')->rebuild();
}
}
+
+ // On a node entity save, check if the responsive
+ // image has created the derivatives so that things
+ // like hero images will load when no image has yet
+ // been rendered. If we do not do this, most hero
+ // images will not work.
+ if ($entity->getEntityTypeId() == 'node') {
+
+ // If there is a hero image, continue to process.
+ if ($image = $entity->field_uw_hero_image) {
+
+ // Get the value of the image field.
+ $image = $entity->field_uw_hero_image->getValue();
+
+ // Load the file from the hero image.
+ $file = \Drupal::entityTypeManager()
+ ->getStorage('file')
+ ->load($image[0]['target_id']);
+
+ // Load the image styles that are needed for the hero.
+ $uw_styles = \Drupal::service('uw_cfg_common.uw_service')->uwGetResponsiveImageStyles();
+
+ // Step through each of the image styles and ensure that
+ // the derivative is created.
+ foreach ($uw_styles as $uw_style) {
+
+ // Load the image style.
+ $style = \Drupal::entityTypeManager()
+ ->getStorage('image_style')
+ ->load($uw_style);
+
+ // Get the styled image derivative.
+ $destination = $style->buildUri($file->getFileUri());
+
+ // If the derivative doesn't exist yet (as the image style may have been
+ // added post launch), create it.
+ if (!file_exists($destination)) {
+ $style->createDerivative($file->getFileUri(), $destination);
+ }
+ }
+ }
+ }
}
/**
--
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