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pass instance to view.get_serializer in metadata's determine_actions method since choices (especially querysets of related fields) can often depend on the instance

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This commit is contained in:
Zoltan Szalai 2015-04-25 16:33:44 +02:00
parent 450c541462
commit c5d6ecc84c
1 changed files with 6 additions and 2 deletions
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8
rest_framework/metadata.py
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@ -74,19 +74,23 @@ class SimpleMetadata(BaseMetadata):
actions = {}
for method in set(['PUT', 'POST']) & set(view.allowed_methods):
view.request = clone_request(request, method)
instance = None
try:
# Test global permissions
if hasattr(view, 'check_permissions'):
view.check_permissions(view.request)
# Test object permissions
if method == 'PUT' and hasattr(view, 'get_object'):
view.get_object()
instance = view.get_object()
except (exceptions.APIException, PermissionDenied, Http404):
pass
else:
# If user has appropriate permissions for the view, include
# appropriate metadata about the fields that should be supplied.
serializer = view.get_serializer()
kwargs = {}
if instance is not None:
kwargs['instance'] = instance
serializer = view.get_serializer(**kwargs)
actions[method] = self.get_serializer_info(serializer)
finally:
view.request = request