Serialize lists as custom activitypub object

bookwyrm/activitypub/__init__.py

@@ -10,6 +10,7 @@ from .note import Note, GeneratedNote, Article, Comment, Review, Quotation
 from .note import Tombstone
 from .interaction import Boost, Like
 from .ordered_collection import OrderedCollection, OrderedCollectionPage
+from .ordered_collection import BookList
 from .person import Person, PublicKey
 from .response import ActivitypubResponse
 from .book import Edition, Work, Author

bookwyrm/activitypub/base_activity.py

@@ -130,6 +130,7 @@ class ActivityObject:
     def serialize(self):
         ''' convert to dictionary with context attr '''
         data = self.__dict__
+        data = {k:v for (k, v) in data.items() if v is not None}
         data['@context'] = 'https://www.w3.org/ns/activitystreams'
         return data
 

bookwyrm/activitypub/ordered_collection.py

@@ -12,13 +12,20 @@ class OrderedCollection(ActivityObject):
     first: str
     last: str = None
     name: str = None
-    summary: str = None
     owner: str = None
     to: List[str] = field(default_factory=lambda: [])
     cc: List[str] = field(default_factory=lambda: [])
     type: str = 'OrderedCollection'
 
 
+@dataclass(init=False)
+class BookList(OrderedCollection):
+    ''' structure of an ordered collection activity '''
+    summary: str = None
+    curation: str = 'closed'
+    type: str = 'List'
+
+
 @dataclass(init=False)
 class OrderedCollectionPage(ActivityObject):
     ''' structure of an ordered collection activity '''