Fixes serialization of parent work remote_id

bookwyrm/activitypub/interaction.py

@@ -8,7 +8,7 @@ from .base_activity import ActivityObject
 class Like(ActivityObject):
     ''' a user faving an object '''
     actor: str
-    object: str
+    object: ActivityObject
     type: str = 'Like'
 
 
@@ -16,5 +16,5 @@ class Like(ActivityObject):
 class Boost(ActivityObject):
     ''' boosting a status '''
     actor: str
-    object: str
+    object: ActivityObject
     type: str = 'Announce'

bookwyrm/models/book.py

@@ -67,6 +67,10 @@ class Book(ActivitypubMixin, BookWyrmModel):
             url='https://%s%s' % (DOMAIN, self.cover.url),
         )]
 
+    @property
+    def ap_parent_work(self):
+        ''' reference the work via local id not remote '''
+        return self.parent_work.local_id
 
     activity_mappings = [
         ActivityMapping('id', 'remote_id'),
@@ -89,7 +93,7 @@ class Book(ActivitypubMixin, BookWyrmModel):
         ActivityMapping('librarything_key', 'librarything_key'),
         ActivityMapping('goodreads_key', 'goodreads_key'),
 
-        ActivityMapping('work', 'parent_work'),
+        ActivityMapping('work', 'ap_parent_work'),
         ActivityMapping('isbn_10', 'isbn_10'),
         ActivityMapping('isbn_13', 'isbn_13'),
         ActivityMapping('oclc_number', 'oclc_number'),