* All apps: symlink files to not yet saved entries were not working

api/js/etemplate/et2_widget_link.js

@@ -178,11 +178,15 @@ var et2_link_to = (function(){ "use strict"; return et2_inputWidget.extend(
 
 		// Filemanager select
 		var select_attrs = {
-			method: 'EGroupware\\Api\\Etemplate\\Widget\\Link::link_existing',
-			method_id: function() { return self.options.value.to_app + ':' + self.options.value.to_id;},
 			button_label: egw.lang('Link'),
 			button_caption: ''
 		};
+		// only set server-side callback, if we have a real application-id (not null or array)
+		// otherwise it only gives an error on server-side
+		if (self.options.value.to_id && typeof self.options.value.to_id != 'object') {
+			select_attrs.method = 'EGroupware\\Api\\Etemplate\\Widget\\Link::link_existing';
+			select_attrs.method_id = self.options.value.to_app + ':' + self.options.value.to_id;
+		}
 		this.vfs_select = et2_createWidget("vfs-select", select_attrs,this);
 		jQuery(this.vfs_select.getDOMNode()).change( function() {
 			var values = true;

api/src/Etemplate/Widget/Link.php

@@ -248,6 +248,11 @@ class Link extends Etemplate\Widget
 	public static function link_existing($app_id, $files)
 	{
 		list($app, $id, $dest_file) = explode(':', $app_id);
+
+		if (empty($app_id) || empty($id))
+		{
+			return;	// cant do anything
+		}
 		if($id && $dest_file && trim($dest_file) !== '')
 		{
 			$id .= "/$dest_file";

api/src/Link.php

@@ -1197,26 +1197,27 @@ class Link extends Link\Storage
 	 * @param string $app appname to link the file to
 	 * @param string $id id in $app
 	 * @param string $file VFS path to link to
-	 * @param string $comment ='' comment to add to the link
+	 * @return boolean true on success, false on failure
 	 */
-	static function link_file($app,$id,$file)//,$comment='')
+	static function link_file($app,$id,$file)
 	{
 		// Don't try to link into app dir if there is no id
 		if(!$id) return;
 
-		$app_path = self::vfs_path($app,$id);
-		$ok = true;
-		if (Vfs::file_exists($app_path) || ($ok = Vfs::mkdir($app_path,0,true)))
-		{
 		if (!Vfs::stat($file))
 		{
 			error_log(__METHOD__. ' (Link target ' . Vfs::decodePath($file) . ' not found!');
 			return false;
 		}
+
+		$entry_dir = self::vfs_path($app, $id);
+		if (!file_exists($entry_dir) && !mkdir($entry_dir, 0, true))
+		{
+			error_log(__METHOD__."($app,$id,".array2string($file).") Can't mkdir $entry_dir!");
+			return false;
 		}
 
-		$link = Vfs::concat($app_path,Vfs::basename($file));
+		return Vfs::symlink($file, Vfs::concat($entry_dir, Vfs::basename($file)));
-		return Vfs::symlink($file,$link);
 	}
 	/**
 	 * deletes a single or all attached files of an entry (for all there's no acl check, as the entry probably not exists any more!)

infolog/inc/class.infolog_ui.inc.php

@@ -1817,8 +1817,9 @@ class infolog_ui
 					{
 						//echo "<p>writing links for new entry $info_id</p>\n"; _debug_array($content['link_to']['to_id']);
 						Link::link('infolog',$info_id,$content['link_to']['to_id']);
-						$content['link_to']['to_id'] = $info_id;
 					}
+					$content['link_to']['to_id'] = $info_id;
+
 					if ($info_link_id && strpos($info_link_id,':') !== false)	// updating info_link_id if necessary
 					{
 						list($app,$id) = explode(':',$info_link_id);