Merge branch 'geo2d' into dev

docs/guide/defining-documents.rst

@@ -431,10 +431,25 @@ If a dictionary is passed then the following options are available:
 :attr:`unique` (Default: False)
     Whether the index should be sparse.
 
-.. note::
 
-   Geospatial indexes will be automatically created for all
+Geospatial indexes
-   :class:`~mongoengine.GeoPointField`\ s
+---------------------------
+Geospatial indexes will be automatically created for all
+:class:`~mongoengine.GeoPointField`\ s
+
+It is also possible to explicitly define geospatial indexes. This is
+useful if you need to define a geospatial index on a subfield of a
+:class:`~mongoengine.DictField` or a custom field that contains a
+point. To create a geospatial index you must prefix the field with the
+***** sign. ::
+
+    class Place(Document):
+        location = DictField()
+        meta = {
+            'indexes': [
+                '*location.point', 
+            ],
+        }
 
 Ordering
 ========

mongoengine/queryset.py

@@ -399,11 +399,13 @@ class QuerySet(object):
         index_list = []
         use_types = doc_cls._meta.get('allow_inheritance', True)
         for key in spec['fields']:
-            # Get direction from + or -
+            # Get ASCENDING direction from +, DESCENDING from -, and GEO2D from *
             direction = pymongo.ASCENDING
             if key.startswith("-"):
                 direction = pymongo.DESCENDING
-            if key.startswith(("+", "-")):
+            elif key.startswith("*"):
+                direction = pymongo.GEO2D
+            if key.startswith(("+", "-", "*")):
                 key = key[1:]
 
             # Use real field name, do it manually because we need field
@@ -421,7 +423,7 @@ class QuerySet(object):
         # If _types is being used, prepend it to every specified index
         index_types = doc_cls._meta.get('index_types', True)
         allow_inheritance = doc_cls._meta.get('allow_inheritance')
-        if spec.get('types', index_types) and allow_inheritance and use_types:
+        if spec.get('types', index_types) and allow_inheritance and use_types and direction is not pymongo.GEO2D:
             index_list.insert(0, ('_types', 1))
 
         spec['fields'] = index_list

tests/document.py

@@ -633,6 +633,26 @@ class DocumentTest(unittest.TestCase):
 
         BlogPost.drop_collection()
 
+    def test_explicit_geo2d_index(self):
+        """Ensure that geo2d indexes work when created via meta[indexes]
+        """
+        class Place(Document):
+            location = DictField()
+            meta = {
+                'indexes': [
+                    '*location.point', 
+                ],
+            }
+        Place.drop_collection()
+
+        info = Place.objects._collection.index_information()
+        # Indexes are lazy so use list() to perform query
+        list(Place.objects)
+        info = Place.objects._collection.index_information()
+        info = [value['key'] for key, value in info.iteritems()]
+
+        self.assertTrue([('location.point', '2d')] in info)
+
     def test_dictionary_indexes(self):
         """Ensure that indexes are used when meta[indexes] contains dictionaries
         instead of lists.