Add docstring

WaVEV · WaVEV · commit d61cbffeceeb · 2024-11-15T02:31:00.000-03:00
diff --git a/django_mongodb/compiler.py b/django_mongodb/compiler.py
@@ -442,6 +442,8 @@ def collection_name(self):
                 if isinstance(v, BaseTable) and self.query.alias_refcount[k]
             )
         except StopIteration:
+            # If the query does not have any table, collection '__null' is used
+            # with one document in order to support subqueries and expressions.
             query = self.query_class(self)
             query.aggregation_pipeline = [{"$facet": {"__null": []}}]
             self.subqueries.insert(0, query)

Original file line number	Diff line number	Diff line change
`@@ -442,6 +442,8 @@ def collection_name(self):`
`442`	`442`	`if isinstance(v, BaseTable) and self.query.alias_refcount[k]`
`443`	`443`	`)`
`444`	`444`	`except StopIteration:`
	`445`	`+ # If the query does not have any table, collection '__null' is used`
	`446`	`+ # with one document in order to support subqueries and expressions.`
`445`	`447`	`query = self.query_class(self)`
`446`	`448`	`query.aggregation_pipeline = [{"$facet": {"__null": []}}]`
`447`	`449`	`self.subqueries.insert(0, query)`