Drupal Core's Migrate API maintains an internal table mapping unique source ids to destination ids. This is usually done via a database table that holds the field values that together uniquely identify a source row and the matching destination id of the entity in Drupal.
Looking at a Recent log messages report of one of our Drupal 8 instaces, I came across this error message:
If you need to support obscure URI schemes in your Drupal 8 instance and you're getting error messages about invalid URI schemes, this post is for you.
Suppose you have a view and want to dynamically alter the number of results shown by the view based on the view arguments.
Sometimes you just want to get the renderable array of a single field of an entity instead of the full entity.
If you need to render an exposed form programmatically, you could use the following snippet. The result will be a renderable array for the exposed form.