server/posts: allow anonymous users to feature posts

server/szurubooru/func/posts.py

@@ -794,6 +794,8 @@ def update_post_flags(post: model.Post, flags: List[str]) -> None:
 
 def feature_post(post: model.Post, user: Optional[model.User]) -> None:
     assert post
+    if user and not user.name:
+        user = None
     post_feature = model.PostFeature()
     post_feature.time = datetime.utcnow()
     post_feature.post = post

server/szurubooru/func/users.py

@@ -43,12 +43,14 @@ def get_avatar_path(user_name: str) -> str:
 def get_avatar_url(user: model.User) -> str:
     assert user
     if user.avatar_style == user.AVATAR_GRAVATAR:
-        assert user.email or user.name
+        if not user.email and not user.name:
+            return ""
         return "https://gravatar.com/avatar/%s?d=retro&s=%d" % (
             util.get_md5((user.email or user.name).lower()),
             config.config["thumbnails"]["avatar_width"],
         )
-    assert user.name
+    if not user.name:
+        return ""
     return "%s/avatars/%s.png" % (
         config.config["data_url"].rstrip("/"),
         user.name.lower(),

server/szurubooru/migrations/versions/5b5c940b4e78_make_featuring_users_nullable.py

@@ -0,0 +1,26 @@
+'''
+make featuring users nullable
+
+Revision ID: 5b5c940b4e78
+Created at: 2025-04-04 08:24:39.000603
+'''
+
+import sqlalchemy as sa
+from alembic import op
+
+revision = '5b5c940b4e78'
+down_revision = 'adcd63ff76a2'
+branch_labels = None
+depends_on = None
+
+def upgrade():
+    op.alter_column(
+        "post_feature", "user_id", nullable=True, existing_nullable=False
+    )
+    pass
+
+def downgrade():
+    op.alter_column(
+        "post_feature", "user_id", nullable=False, existing_nullable=True
+    )
+    pass

server/szurubooru/model/post.py

@@ -24,8 +24,8 @@ class PostFeature(Base):
     user_id = sa.Column(
         "user_id",
         sa.Integer,
-        sa.ForeignKey("user.id"),
-        nullable=False,
+        sa.ForeignKey("user.id", ondelete="SET NULL"),
+        nullable=True,
         index=True,
     )
     time = sa.Column("time", sa.DateTime, nullable=False)