X-Git-Url: https://git.madduck.net/etc/taskwarrior.git/blobdiff_plain/58921ff492b989ac597f13f7306e8ae4cda15826..3a9e4aebe4359123804b6e5bca8c5678546b688e:/tasklib/task.py?ds=inline diff --git a/tasklib/task.py b/tasklib/task.py index a0b3c28..9b3626d 100644 --- a/tasklib/task.py +++ b/tasklib/task.py @@ -29,6 +29,18 @@ class SerializingObject(object): """ Common ancestor for TaskResource & TaskFilter, since they both need to serialize arguments. + + Serializing method should hold the following contract: + - any empty value (meaning removal of the attribute) + is deserialized into a empty string + - None denotes a empty value for any attribute + + Deserializing method should hold the following contract: + - None denotes a empty value for any attribute (however, + this is here as a safeguard, TaskWarrior currently does + not export empty-valued attributes) if the attribute + is not iterable (e.g. list or set), in which case + a empty iterable should be used. """ def _deserialize(self, key, value): @@ -43,7 +55,7 @@ class SerializingObject(object): def timestamp_serializer(self, date): if not date: - return None + return '' return date.strftime(DATE_FORMAT) def timestamp_deserializer(self, date_str): @@ -98,9 +110,10 @@ class SerializingObject(object): return tags.split(',') if tags else [] return tags or [] - def serialize_depends(self, cur_dependencies): + def serialize_depends(self, value): # Return the list of uuids - return ','.join(task['uuid'] for task in cur_dependencies) + value = value if value is not None else set() + return ','.join(task['uuid'] for task in value) def deserialize_depends(self, raw_uuids): raw_uuids = raw_uuids or '' # Convert None to empty string @@ -317,7 +330,7 @@ class Task(TaskResource): def serialize_depends(self, cur_dependencies): # Check that all the tasks are saved - for task in cur_dependencies: + for task in (cur_dependencies or set()): if not task.saved: raise Task.NotSaved('Task \'%s\' needs to be saved before ' 'it can be set as dependency.' % task)