X-Git-Url: https://git.madduck.net/etc/taskwarrior.git/blobdiff_plain/58921ff492b989ac597f13f7306e8ae4cda15826..a40915e62131c8828305ec59ed630c63e6abecd7:/tasklib/task.py?ds=inline

diff --git a/tasklib/task.py b/tasklib/task.py
index a0b3c28..f482f53 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
@@ -159,6 +172,40 @@ class TaskResource(SerializingObject):
     def __repr__(self):
         return str(self)
 
+    def export_data(self):
+        """
+        Exports current data contained in the Task as JSON
+        """
+
+        # We need to remove spaces for TW-1504, use custom separators
+        data_tuples = ((key, self._serialize(key, value))
+                       for key, value in six.iteritems(self._data))
+
+        # Empty string denotes empty serialized value, we do not want
+        # to pass that to TaskWarrior.
+        data_tuples = filter(lambda t: t[1] is not '', data_tuples)
+        data = dict(data_tuples)
+        return json.dumps(data, separators=(',',':'))
+
+    @property
+    def _modified_fields(self):
+        writable_fields = set(self._data.keys()) - set(self.read_only_fields)
+        for key in writable_fields:
+            new_value = self._data.get(key)
+            old_value = self._original_data.get(key)
+
+            # Make sure not to mark data removal as modified field if the
+            # field originally had some empty value
+            if key in self._data and not new_value and not old_value:
+                continue
+
+            if new_value != old_value:
+                yield key
+
+    @property
+    def modified(self):
+        return bool(list(self._modified_fields))
+
 
 class TaskAnnotation(TaskResource):
     read_only_fields = ['entry', 'description']
@@ -276,25 +323,6 @@ class Task(TaskResource):
             # If the tasks are not saved, return hash of instance id
             return id(self).__hash__()
 
-    @property
-    def _modified_fields(self):
-        writable_fields = set(self._data.keys()) - set(self.read_only_fields)
-        for key in writable_fields:
-            new_value = self._data.get(key)
-            old_value = self._original_data.get(key)
-
-            # Make sure not to mark data removal as modified field if the
-            # field originally had some empty value
-            if key in self._data and not new_value and not old_value:
-                continue
-
-            if new_value != old_value:
-                yield key
-
-    @property
-    def modified(self):
-        return bool(list(self._modified_fields))
-
     @property
     def completed(self):
         return self['status'] == six.text_type('completed')
@@ -317,7 +345,7 @@ 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)
@@ -481,21 +509,6 @@ class Task(TaskResource):
         else:
             self._load_data(new_data)
 
-    def export_data(self):
-        """
-        Exports current data contained in the Task as JSON
-        """
-
-        # We need to remove spaces for TW-1504, use custom separators
-        data_tuples = ((key, self._serialize(key, value))
-                       for key, value in six.iteritems(self._data))
-
-        # Empty string denotes empty serialized value, we do not want
-        # to pass that to TaskWarrior.
-        data_tuples = filter(lambda t: t[1] is not '', data_tuples)
-        data = dict(data_tuples)
-        return json.dumps(data, separators=(',',':'))
-
 class TaskFilter(SerializingObject):
     """
     A set of parameters to filter the task list with.
@@ -657,7 +670,8 @@ class TaskWarrior(object):
         self.config = {
             'data.location': os.path.expanduser(data_location),
             'confirmation': 'no',
-            'dependency.confirmation': 'no', # See TW-1483 or taskrc man page
+            'dependency.confirmation': 'no',  # See TW-1483 or taskrc man page
+            'recurrence.confirmation': 'no',  # Necessary for modifying R tasks
         }
         self.tasks = TaskQuerySet(self)
         self.version = self._get_version()