Merge pull request #24 from dmyers/patch-1

Fixes for parameter decoding and encoding with elasticsearch driver.

Author: mmanos

src/Mmanos/Search/Index/Elasticsearch.php

@@ -167,7 +167,7 @@ public function runQuery($query, array $options = array())
 				array(
 					'id' => array_get($response, '_id'),
 				),
-				json_decode(base64_decode(array_get($response, '_source._parameters', array())), true)
+				json_decode(base64_decode(array_get($response, '_source._parameters', '')), true)
 			));
 		}
 
@@ -187,7 +187,7 @@ public function runQuery($query, array $options = array())
 						'id'     => array_get($hit, '_id'),
 						'_score' => array_get($hit, '_score'),
 					),
-					json_decode(base64_decode(array_get($hit, '_source._parameters', array())), true)
+					json_decode(base64_decode(array_get($hit, '_source._parameters', '')), true)
 				);
 			}
 		}
@@ -233,7 +233,9 @@ public function insert($id, array $fields, array $parameters = array())
 			$this->delete($id);
 		} catch (\Elasticsearch\Common\Exceptions\Missing404Exception $e) {}
 
-		$fields['_parameters'] = base64_encode(json_encode($parameters));
+		if (!empty($parameters)) {
+			$fields['_parameters'] = base64_encode(json_encode($parameters));
+		}
 
 		$this->getClient()->index(array(
 			'index' => $this->name,