def register_nested(self,
parent_prefix,
prefix,
viewset,
base_name=None,
parent_lookup_name=None,
depth_level=1):
"""
Register a nested viewset wihtout worrying of instantiate a nested
router for registry.
"""
kwargs = {'trailing_slash': bool(self.trailing_slash)}
if parent_lookup_name is not None:
kwargs.update(lookup=parent_lookup_name)
# Section for the depth of the route and add more routes
if depth_level > 1:
routers = ifilter(
lambda r:
(r._depth_level ==
(depth_level - 1)) and r._nested_prefix == parent_prefix,
self._nested_object_registry)
try:
parent_router = routers.next()
except StopIteration:
raise RuntimeError('parent registered resource not found')
else:
parent_router = self
nested_router = NestedSimpleRouter(parent_router, parent_prefix,
**kwargs)
nested_router._nested_prefix = prefix
nested_router._depth_level = depth_level
nested_router.register(prefix, viewset, base_name)
self._nested_object_registry.append(nested_router)
