Admin: reject ID value 0

lib/Spot.php

@@ -28,6 +28,8 @@ use \Settings;
  * - Posts (table `posts`):
  *	 - site_time: timestamp in Site Time
  *   - timezone: Local Timezone
+ * - Users (table `users`):
+ *   - timezone: Site Timezone (stored user's timezone for emails)
  */
 
 class Spot extends Main
@@ -176,7 +178,6 @@ class Spot extends Main
 				'user'						=> $this->oUser->getUserInfo()
 			),
 			'consts' => array(
-				'server'					=> $this->asContext['serv_name'],
 				'modes'						=> Project::MODES,
 				'clearances'				=> User::CLEARANCES,
 				'default_timezone'			=> Settings::TIMEZONE
@@ -654,6 +655,8 @@ class Spot extends Main
 		$sDesc = '';
 		$asResult = array();
 
+		if($this->oDb->isId($sField) && $sValue <= 0) return self::getJsonResult(false, $this->oLang->getTranslation('impossible_value', [$sValue, $sField]));
+
 		switch($sType) {
 			case 'project':
 				$oProject = new Project($this->oDb, $iId);