Entities and Twig
Helpful links
- Entity reference values in twig template | Drupal.org
- Drupal 8 Entity Cheat Sheet | Drupal informatie van Wizzlern, de Drupal trainers
- Get referenced node fields in twig - Drupal Answers
Tips
If you want to access fields and their values, start off with node, not content, which is a render array with the configured fields.
when trying to figure out what's in a content entity, use node.toArray(), that gives you an array representation that's very close to how you can access it as an object. While the internal structure is quite different.
Then, you can access a field value with
block_content.field_name.property. So in your case,block_content.field_align.value. The property is value for most field types, for references, you can either use target_id for the ID or entity for the referenced entity object. Yes, you can directly access fields on that, but make sure to always check that a reference exists otherwise you can end up with fatal errors or exceptions. To access the label of a term reference for example, you can access it asblock_content.field_tags.entity.name.value.If you don't specify the field delta, it defaults to the first. If you want to access a different delta, you can use entity.field_name.1.valueand so on. You can also loop over them.
This all maps directly to PHP, you can also do
$block_content->field_tags->entity->name->valuein preprocess and other places where you have theblock_content.
Snippets
{{ node.field_blog_author.entity.title.value }}