Fixes NOTICE when incorrect sites ids specified

git-svn-id: http://dev.piwik.org/svn/trunk@6959 59fd770c-687e-43c8-a1e3-f5a4ff64c105

core/Site.php

@@ -187,16 +187,15 @@ class Piwik_Site
 	/**
 	 * Checks the given string for valid site ids and returns them as an array
 	 *
-	 * @param string $string comma separated idSite list
+	 * @param string $ids comma separated idSite list
 	 * @return array of valid integer
 	 */
-	static public function getIdSitesFromIdSitesString( $string )
+	static public function getIdSitesFromIdSitesString( $ids )
 	{
-		if(is_array($string))
+		if(!is_array($ids))
 		{
-			return $string;
+			$ids = explode(',', $ids);
 		}
-		$ids = explode(',', $string);
 		$validIds = array();
 		foreach($ids as $id)
 		{
@@ -206,6 +205,9 @@ class Piwik_Site
 			    $validIds[] = $id;
 			}
 		}
+		$validIds = array_filter($validIds);
+		$validIds = array_unique($validIds);
+
 		return $validIds;
 	}
 

plugins/CoreAdminHome/API.php

@@ -71,6 +71,9 @@ class Piwik_CoreAdminHome_API
 	{
 		Piwik::checkUserIsSuperUser();
 		$idSites = Piwik_Site::getIdSitesFromIdSitesString($idSites);
+		if(empty($idSites)) {
+			throw new Exception("Specify a value for &idSites=");
+		}
 		// Ensure the specified dates are valid
 		$toInvalidate = $invalidDates = array();
 		$dates = explode(',', $dates);

plugins/UsersManager/API.php

@@ -542,7 +542,11 @@ class Piwik_UsersManager_API
 		{
 			$idSites = Piwik_Site::getIdSitesFromIdSitesString($idSites);
 		}
-		
+
+		if(empty($idSites))
+		{
+			throw new Exception('Specify at least one website ID in &idSites=');
+		}
 		// it is possible to set user access on websites only for the websites admin
 		// basically an admin can give the view or the admin access to any user for the websites he manages
 		Piwik::checkUserHasAdminAccess( $idSites );