Fixed post deletion and export to JSON

boards/models/post/export.py

@@ -37,10 +37,10 b' class JsonExporter(Exporter):'
             'title': post.title,
             'text': post.get_raw_text(),
             }
-        if post.images.exists():
+        if post.attachments.exists():
             post_image = post.get_first_image()
-            post_json['image'] = post_image.image.url
-            post_json['image_preview'] = post_image.image.url_200x150
+            post_json['image'] = post_image.file.url
+            post_json['image_preview'] = post_image.get_preview_url()
         if include_last_update:
             post_json['bump_time'] = utils.datetime_to_epoch(
                 post.get_thread().bump_time)

boards/signals.py

@@ -69,14 +69,6 b' def parse_text(instance, **kwargs):'
 
 
 @receiver(pre_delete, sender=Post)
-def delete_images(instance, **kwargs):
-    for image in instance.images.all():
-        image_refs_count = image.post_images.count()
-        if image_refs_count == 1:
-            image.delete()
-
-
-@receiver(pre_delete, sender=Post)
 def delete_attachments(instance, **kwargs):
     for attachment in instance.attachments.all():
         attachment_refs_count = attachment.attachment_posts.count()