Automatically handle image fields in model serializer

bookwyrm/activitypub/base_activity.py

@@ -139,7 +139,7 @@ class ActivityObject:
         for (model_key, value) in image_fields.items():
             if not value:
                 continue
-            #formatted_value = image_formatter(value)
+            formatted_value = image_formatter(value)
             getattr(instance, model_key).save(*value, save=True)
 
         # add one to many fields

bookwyrm/models/base_model.py

@@ -10,6 +10,7 @@ from Crypto.PublicKey import RSA
 from Crypto.Signature import pkcs1_15
 from Crypto.Hash import SHA256
 from django.db import models
+from django.db.models.fields.files import ImageFieldFile
 from django.dispatch import receiver
 
 from bookwyrm import activitypub
@@ -77,16 +78,18 @@ class ActivitypubMixin:
                 value = value.remote_id
             elif isinstance(value, datetime):
                 value = value.isoformat()
+            elif isinstance(value, ImageFieldFile):
+                value = image_formatter(value)
 
             # run the custom formatter function set in the model
-            result = mapping.activity_formatter(value)
+            formatted_value = mapping.activity_formatter(value)
             if mapping.activity_key in fields and \
                     isinstance(fields[mapping.activity_key], list):
                 # there can be two database fields that map to the same AP list
                 # this happens in status tags, which combines user and book tags
-                fields[mapping.activity_key] += result
+                fields[mapping.activity_key] += formatted_value
             else:
-                fields[mapping.activity_key] = result
+                fields[mapping.activity_key] = formatted_value
 
         if pure:
             return self.pure_activity_serializer(
@@ -270,12 +273,10 @@ def tag_formatter(items, name_field, activity_type):
     return tags
 
 
-def image_formatter(image, default_path=None):
+def image_formatter(image):
     ''' convert images into activitypub json '''
     if image and hasattr(image, 'url'):
         url = image.url
-    elif default_path:
-        url = default_path
     else:
         return None
     url = 'https://%s%s' % (DOMAIN, url)

bookwyrm/models/book.py

@@ -12,7 +12,6 @@ from bookwyrm.utils.fields import ArrayField
 
 from .base_model import ActivityMapping, BookWyrmModel
 from .base_model import ActivitypubMixin, OrderedCollectionPageMixin
-from .base_model import image_attachments_formatter
 
 class Book(ActivitypubMixin, BookWyrmModel):
     ''' a generic book, which can mean either an edition or a work '''
@@ -61,11 +60,6 @@ class Book(ActivitypubMixin, BookWyrmModel):
         ''' the activitypub serialization should be a list of author ids '''
         return [a.remote_id for a in self.authors.all()]
 
-    @property
-    def ap_parent_work(self):
-        ''' reference the work via local id not remote '''
-        return self.parent_work.remote_id
-
     activity_mappings = [
         ActivityMapping('id', 'remote_id'),
 
@@ -87,7 +81,7 @@ class Book(ActivitypubMixin, BookWyrmModel):
         ActivityMapping('librarythingKey', 'librarything_key'),
         ActivityMapping('goodreadsKey', 'goodreads_key'),
 
-        ActivityMapping('work', 'ap_parent_work'),
+        ActivityMapping('work', 'parent_work'),
         ActivityMapping('isbn10', 'isbn_10'),
         ActivityMapping('isbn13', 'isbn_13'),
         ActivityMapping('oclcNumber', 'oclc_number'),
@@ -98,12 +92,7 @@ class Book(ActivitypubMixin, BookWyrmModel):
 
         ActivityMapping('lccn', 'lccn'),
         ActivityMapping('editions', 'editions_path'),
-        ActivityMapping(
-            'attachment', 'cover',
-            # this expects an iterable and the field is just an image
-            lambda x: image_attachments_formatter([x]),
-            activitypub.image_formatter
-        ),
+        ActivityMapping('cover', 'cover'),
     ]
 
     def save(self, *args, **kwargs):

bookwyrm/models/user.py

@@ -112,11 +112,7 @@ class User(OrderedCollectionPageMixin, AbstractUser):
             activity_formatter=lambda x: {'sharedInbox': x},
             model_formatter=lambda x: x.get('sharedInbox')
         ),
-        ActivityMapping(
-            'icon', 'avatar',
-            lambda x: image_formatter(x, '/static/images/default_avi.jpg'),
-            activitypub.image_formatter
-        ),
+        ActivityMapping('icon', 'avatar'),
         ActivityMapping(
             'manuallyApprovesFollowers',
             'manually_approves_followers'