Droptica: JSON-LD in Drupal: how to generate structured data from fields with Schema.org Metatag

The safest way to add JSON-LD to Drupal is to map Schema.org properties to existing content fields with Metatag and Schema.org Metatag. JSON-LD in Drupal should come from the same field model that supplies the visible page - not from hand-written scripts that drift when prices or availability change. Here is how to map tokens, export config, validate rendered pages, and catch missing bundles in CI.