Fixes for MongoRawQuery and MongoRawQuerySet

Author: aclark4life

django_mongodb/query.py

@@ -326,21 +326,15 @@ def __init__(self, sql, using, model, params=()):
         self.model = model
 
     def __iter__(self):
-        self.cursor = self._execute_query()
-        if not connections[self.using].features.can_use_chunked_reads:
-            result = list(self.cursor)
-        else:
-            result = self.cursor
-        return iter(result)
+        self._execute_query()
+        return self.cursor
 
     def _execute_query(self):
         connection = connections[self.using]
         collection = connection.get_collection(self.model._meta.db_table)
-        return collection.aggregate(self.sql)
+        self.cursor = collection.aggregate(self.sql)
 
     def get_columns(self):
-        if self.cursor is None:
-            self._execute_query()
         return [f.column for f in self.model._meta.fields]
 
     def __str__(self):
@@ -358,7 +352,7 @@ def __init__(
         using=None,
         hints=None,
     ):
-        super().__init__(raw_query, model=model, query=query, using=using, hints=hints)
+        super().__init__(raw_query, model=model, query=query, using=using, hints=hints, translations=translations)
         self.query = query or MongoRawQuery(
             sql=raw_query, using=self.db, model=self.model, params=params
         )