Automatic image file names

Context

Automatically create image media name when attached to content.

Currently using this trick to set the image name based on alt text.

The parent content often has a location field, location and a timestamp would make a good filename.

One option is to create a custom token to use in the auto entity label UI. This could be done with ECA.

Another option is to use ECA to set the alt text/name on save.

Are there any modules that provide reverse reference tokens?

Discovery

This simple ECA loads the referenced media on save of the snapshot, and sets the media location field based on the snapshot's location.

The photo has to be save after the location is set. Is this causing multiple saves?

*This isn't working when trying to set multiple locations on the photo.

View on GitLab #3255608Tutorial, how to set values in entity reference field for the purpose of back reference Status: Closed

View on GitLab #3309212How to set a feed form nested property value with ECA Status: Closed

Analysis

Let's get a better handle on what is happening.

I added this code that will post a message when an entity is saved or updated.

I used drupal_static() to count the calls to either function.

function entitysavetest_entity_insert(\Drupal\Core\Entity\EntityInterface $entity) {
  $test = &drupal_static('message_count', 1);
  \Drupal::messenger()->addStatus($test . '. Saving entity: ' . $entity->getEntityTypeId() . ' ' . $entity->label());
  $test++;
}

function entitysavetest_entity_update(\Drupal\Core\Entity\EntityInterface $entity) {
  $test = &drupal_static('message_count', 1);
  \Drupal::messenger()->addStatus($test . '. Updating entity: ' . $entity->getEntityTypeId() . ' ' . $entity->label());
  $test++;
}

When I upload an image in media library, I can see that it's saved and updated right away.