initial permissions endpoint implementation

models/group.go

@@ -72,10 +72,13 @@ func (g *Group) GroupAdd() (*Group, error) {
 		} else {
 			affected, _ := result.RowsAffected()
 			id, _ := result.LastInsertId()
+			g.GroupId = int(id)
 			log.Printf("GroupAdd insert returned result id '%d' affecting %d row(s).\n", id, affected)
 		}
 	} else {
-		log.Printf("GroupAdd group name already exists : '%v'\n", err)
+		errString := "group with name already exists"
+		log.Printf("GroupAdd %s\n", errString)
+		return &Group{}, errors.New(errString)
 	}
 
 	return g, nil