Updated index creation allows kwargs to be passed through refs (MongoEngine/mongoengine#104)

docs/changelog.rst

@@ -4,6 +4,7 @@ Changelog
 
 Changes in 0.7.X
 =================
+- Updated index creation allows kwargs to be passed through refs (MongoEngine/mongoengine#104)
 - Fixed Q object merge edge case (MongoEngine/mongoengine#109)
 - Fixed reloading on sharded documents (hmarr/mongoengine#569)
 - Added NotUniqueError for duplicate keys (MongoEngine/mongoengine#62)

mongoengine/queryset.py

@@ -398,12 +398,12 @@ class QuerySet(object):
             or a **-** to determine the index ordering
         """
         index_spec = QuerySet._build_index_spec(self._document, key_or_list)
-        self._collection.ensure_index(
-            index_spec['fields'],
-            drop_dups=drop_dups,
-            background=background,
-            sparse=index_spec.get('sparse', False),
-            unique=index_spec.get('unique', False))
+        fields = index_spec.pop('fields')
+        index_spec['drop_dups'] = drop_dups
+        index_spec['background'] = background
+        index_spec.update(kwargs)
+
+        self._collection.ensure_index(fields, **index_spec)
         return self
 
     def __call__(self, q_obj=None, class_check=True, slave_okay=False, **query):
@@ -473,11 +473,11 @@ class QuerySet(object):
         # Ensure document-defined indexes are created
         if self._document._meta['index_specs']:
             for spec in self._document._meta['index_specs']:
-                types_indexed = types_indexed or includes_types(spec['fields'])
+                fields = spec.pop('fields')
+                types_indexed = types_indexed or includes_types(fields)
                 opts = index_opts.copy()
-                opts['unique'] = spec.get('unique', False)
-                opts['sparse'] = spec.get('sparse', False)
-                self._collection.ensure_index(spec['fields'],
+                opts.update(spec)
+                self._collection.ensure_index(fields,
                     background=background, **opts)
 
         # If _types is being used (for polymorphism), it needs an index,

tests/test_document.py

@@ -16,7 +16,7 @@ from tests.fixtures import Base, Mixin, PickleEmbedded, PickleTest
 from mongoengine import *
 from mongoengine.base import NotRegistered, InvalidDocumentError
 from mongoengine.queryset import InvalidQueryError
-from mongoengine.connection import get_db
+from mongoengine.connection import get_db, get_connection
 
 TEST_IMAGE_PATH = os.path.join(os.path.dirname(__file__), 'mongoengine.png')
 
@@ -1102,6 +1102,32 @@ class DocumentTest(unittest.TestCase):
 
         BlogPost.drop_collection()
 
+    def test_ttl_indexes(self):
+
+        class Log(Document):
+            created = DateTimeField(default=datetime.now)
+            meta = {
+                'indexes': [
+                    {'fields': ['created'], 'expireAfterSeconds': 3600}
+                ]
+            }
+
+        Log.drop_collection()
+
+        if pymongo.version_tuple[0] < 2 and pymongo.version_tuple[1] < 3:
+            raise SkipTest('pymongo needs to be 2.3 or higher for this test')
+
+        connection = get_connection()
+        version_array = connection.server_info()['versionArray']
+        if version_array[0] < 2 and version_array[1] < 2:
+            raise SkipTest('MongoDB needs to be 2.2 or higher for this test')
+
+        # Indexes are lazy so use list() to perform query
+        list(Log.objects)
+        info = Log.objects._collection.index_information()
+        self.assertEqual(3600,
+                info['_types_1_created_1']['expireAfterSeconds'])
+
     def test_unique_and_indexes(self):
         """Ensure that 'unique' constraints aren't overridden by
         meta.indexes.