def get_filter_fields(self, path, method, view):
if not schemas.is_list_view(path, method, view):
return []
if not getattr(view, 'filter_backends', None):
return []
fields = []
for filter_backend in view.filter_backends:
backend = filter_backend()
if not hasattr(backend, 'get_filterset_class'):
fields += filter_backend().get_schema_fields(view)
continue
filter_class = backend.get_filterset_class(view,
view.get_queryset())
if not filter_class:
continue
for filter_name, filter_instance in filter_class().filters.items():
filter_type = get_field_type(filter_instance)
field = coreapi.Field(
name=filter_name,
required=False,
location=filter_type,
)
# Prevent double rendering
if field not in fields:
fields.append(field)
return fields
def show_filter_backends(path, method, view):
"""Return True if view have an explicitly defined parameter
`show_filter_backends`, which we can inspect or
the given path/method appears to represent a list view.
"""
if getattr(view, 'show_filter_backends', None):
return True
return is_list_view(path, method, view)