http://nodeone.se/en/learn-the-rules-framework
komponenty: https://www.drupal.org/node/1300024

úprava obsahu pole pomocí Rules: https://www.ostraining.com/blog/drupal/rules-update-nodes/

práce s poli "entity-reference: http://www.milesjcarter.co.uk/blog/web-design-development/entity-referen...