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Support for dicts in StateChannel.broadcast_instance() #13

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Support for dicts in StateChannel.broadcast_instance() #13

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21 changes: 15 additions & 6 deletions rxdjango/signal_handler.py
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Original file line number Diff line number Diff line change
Expand Up @@ -80,18 +80,27 @@ def prepare_save(sender, instance, **kwargs):
instance.__old_parent = old_parent

def _relay_instance(_layer, instance, tstamp, created):
# This method may receive instances as objectse or already
# serialized. broadcast_instance allows this so microservices
# can send optimistic updates

if not instance:
return

if isinstance(instance, models.Model):
instances = [instance]
elif isinstance(instance, models.Manager):
instances = instance.all()
if isinstance(instance, models.Manager) or isinstance(instance, list):
instances = instance
else:
raise ProgrammingError()
instances = [instance]

for _instance in instances:
serialized = _layer.serialize_instance(_instance, tstamp)
if isinstance(_instance, models.Model):
serialized = _layer.serialize_instance(_instance, tstamp)
elif isinstance(_instance, dict):
serialized = _instance
else:
cls = _instance.__class__
raise ProgrammingError(f'Cannot relay instance of type {cls}')

serialized['_operation'] = 'create' if created else 'update'
self._schedule(serialized, _layer)

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