ES: fixed issue with storing empty records

extensions/elasticsearch/CHANGELOG.md

@@ -4,11 +4,12 @@ Yii Framework 2 elasticsearch extension Change Log
 2.0.0-rc under development
 --------------------------
 
+- Bug #3587: Fixed an issue with storing empty records (cebe)
+- Enh #3520: Added `unlinkAll()`-method to active record to remove all records of a model relation (NmDimas, samdark, cebe)
+- Enh #3527: Added `highlight` property to Query and ActiveRecord. (Borales)
 - Chg: asArray in ActiveQuery is now equal to using the normal Query. This means, that the output structure has changed and `with` is supported anymore. (cebe)
 - Chg: Deletion of a record is now also considered successful if the record did not exist. (cebe)
 - Chg: Requirement changes: Yii now requires elasticsearch version 1.0 or higher (cebe)
-- Enh #3520: Added `unlinkAll()`-method to active record to remove all records of a model relation (NmDimas, samdark, cebe)
-- Enh #3527: Added `highlight` property to Query and ActiveRecord. (Borales)
 
 
 2.0.0-beta April 13, 2014
@@ -27,7 +28,9 @@ Yii Framework 2 elasticsearch extension Change Log
              All relational queries are now directly served by `ActiveQuery` allowing to use
              custom scopes in relations (cebe)
 
+
 2.0.0-alpha, December 1, 2013
 -----------------------------
 
 - Initial release.
+

extensions/elasticsearch/Command.php

@@ -80,7 +80,11 @@ class Command extends Component
      */
     public function insert($index, $type, $data, $id = null, $options = [])
     {
-        $body = is_array($data) ? Json::encode($data) : $data;
+        if (empty($data)) {
+            $body = '{}';
+        } else {
+            $body = is_array($data) ? Json::encode($data) : $data;
+        }
 
         if ($id !== null) {
             return $this->db->put([$index, $type, $id], $options, $body);

tests/unit/extensions/elasticsearch/ActiveRecordTest.php

@@ -186,6 +186,16 @@ class ActiveRecordTest extends ElasticSearchTestCase
         $db->createCommand()->flushIndex('yiitest');
     }
 
+    public function testSaveNoChanges()
+    {
+        // this should not fail with exception
+        $customer = new Customer();
+        // insert
+        $customer->save(false);
+        // update
+        $customer->save(false);
+    }
+
     public function testFindAsArray()
     {
         // asArray