Issue #490: Set Elastica\Query\FunctionScore::DECAY_EXPONENTIAL to "exp" instead of "exponential"

Author: ruflin

changes.txt

@@ -1,5 +1,8 @@
 CHANGES
 
+2013-11-03
+- Issue #490: Set Elastica\Query\FunctionScore::DECAY_EXPONENTIAL to "exp" instead of "exponential"
+
 2013-10-29
 - Elastica_Type::exists() added
   See http://www.elasticsearch.org/guide/en/elasticsearch/reference/current/indices-types-exists.html#indices-types-exists

lib/Elastica/Query/FunctionScore.php

@@ -26,7 +26,7 @@ class FunctionScore extends AbstractQuery
     const SCORE_MODE_MIN = 'min';
 
     const DECAY_GUASS = 'gauss';
-    const DECAY_EXPONENTIAL = 'exponential';
+    const DECAY_EXPONENTIAL = 'exp';
     const DECAY_LINEAR = 'linear';
 
     protected $_functions = array();