db/routines/vn/triggers/buy_beforeInsert.sql

@@ -19,6 +19,7 @@ trig: BEGIN
 	END IF;
 
 	SET NEW.editorFk = account.myUser_getId();
+	SET NEW.buyerFk = NEW.editorFk;
 
 	CALL buy_checkGrouping(NEW.`grouping`);
 

db/routines/vn/triggers/buy_beforeUpdate.sql

@@ -65,6 +65,10 @@ trig:BEGIN
 		SET	NEW.isIgnored = TRUE;
 	END IF;
 
+	IF NOT (NEW.itemFk <=> OLD.itemFk) THEN
+		SET NEW.buyerFk = NEW.editorFk;
+	END IF;
+
 	IF NOT (NEW.itemFk <=> OLD.itemFk) OR 
 		NOT (OLD.entryFk <=> NEW.entryFk) THEN		
 		CREATE OR REPLACE TEMPORARY TABLE tmp.buysToCheck

db/versions/10880-salmonHydrangea/00-firstScript.sql

@@ -0,0 +1 @@
+ALTER TABLE vn.buy ADD buyerFk int(10) unsigned DEFAULT NULL NULL;