Do not keep calling _dereference on values if it has already been dereferenced.

2019-03-25 09:43:42 +05:30
parent 0744892244
commit fdcaca42ae
4 changed files with 111 additions and 1 deletions
@@ -276,11 +276,16 @@ class ComplexBaseField(BaseField):

        _dereference = _import_class('DeReference')()

-        if instance._initialised and dereference and instance._data.get(self.name):
+        if (instance._initialised and
+                dereference and
+                instance._data.get(self.name) and
+                not getattr(instance._data[self.name], '_dereferenced', False)):
            instance._data[self.name] = _dereference(
                instance._data.get(self.name), max_depth=1, instance=instance,
                name=self.name
            )
+            if hasattr(instance._data[self.name], '_dereferenced'):
+                instance._data[self.name]._dereferenced = True

        value = super(ComplexBaseField, self).__get__(instance, owner)