save current work state

db/calendar.php

@@ -50,7 +50,7 @@ class Calendar extends Entity {
 			$this->fromRow($createFrom);
 		}
 
-		//create from vcalendar
+		//create from VCalendar
 		if($createFrom instanceof VCalendar) {
 			$this->fromVObject($createFrom);
 		}
@@ -122,11 +122,13 @@ class Calendar extends Entity {
 	 * @brief set uri property
 	 */
 	public function setURI($uri) {
-		if(is_string($uri) === false) {
+		if(is_string($uri) === false || trim($uri) === '') {
 			return null;
 		}
+
 		$this->uri = $uri;
 		parent::setUri($this->slugify('uri'));
+		return $this;
 	}
 
 	/**

db/object.php

@@ -287,6 +287,21 @@ class Object extends Entity {
 		}
 	}
 
+	public function getRuds($force=false) {
+		if($this->ruds !== null) {
+			return $this->ruds;
+		} else {
+			if($this->calendar instanceof Calendar) {
+				$cruds = $this->calendar->getCruds();
+				if($cruds & Permission::CREATE) {
+					$cruds -= Permission::CREATE;
+				}
+				return $cruds;
+			}
+			return null;
+		}
+	}
+
 	/**
 	 * @brief get last modified of object
 	 * @return DateTime