Show message when article not yet indexed for similarity

When an article is too new to have a topic vector, show
'Svipaðar greinar verða tiltækar þegar greinin hefur verið flokkuð'
instead of an empty list.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: vthorsteinsson

routes/main.py

@@ -116,9 +116,13 @@ def similar() -> Response:
         return better_jsonify(**resp)
 
     with SessionContext(commit=True) as session:
-        similar = Search.list_similar_to_article(session, uuid, n=MAX_SIM_ARTICLES)
+        similar, not_indexed = Search.list_similar_to_article(
+            session, uuid, n=MAX_SIM_ARTICLES
+        )
 
-        resp["payload"] = render_template("similar.html", similar=similar)
+        resp["payload"] = render_template(
+            "similar.html", similar=similar, not_indexed=not_indexed
+        )
         resp["err"] = False
 
         return better_jsonify(**resp)

search.py

@@ -73,13 +73,16 @@ def _new_client(cls) -> SimilarityClient:
     @classmethod
     def list_similar_to_article(
         cls, session: Session, uuid: str, n: int
-    ) -> List[SimilarDict]:
-        """List n articles that are similar to the article with the given id"""
+    ) -> Tuple[List[SimilarDict], bool]:
+        """List n articles that are similar to the article with the given id.
+        Returns a tuple of (similar_articles, not_indexed) where not_indexed
+        is True if the article has not yet been indexed for similarity."""
         client = cls._new_client()
         try:
             result = client.list_similar_to_article(uuid, n=n + 5)
+            not_indexed: bool = result.get("not_indexed", False)
             articles: List[Tuple[str, float]] = result.get("articles", [])
-            return cls.list_articles(session, articles, n)
+            return cls.list_articles(session, articles, n), not_indexed
         finally:
             client.close()
 

templates/similar.html

@@ -1,3 +1,6 @@
+{% if not_indexed %}
+<p class="similar-pending">Svipaðar greinar verða tiltækar þegar greinin hefur verið flokkuð.</p>
+{% elif similar %}
 <ul id="similarlist">
    {% for sa in similar %}
       <li>
@@ -8,3 +11,4 @@
       </li>
    {% endfor %}
 </ul>
+{% endif %}

vectors/simserver.py

@@ -369,6 +369,8 @@ def __init__(self, request: object) -> None:
                                 # Compare similarity to an article identified by UUID
                                 uuid = request["id"].strip().lower()
                                 topic = self.article_topic(uuid)
+                                if topic is None:
+                                    result["not_indexed"] = True
                             except:
                                 raise ClientError(request)
                         elif "terms" in request: