add: search over multiple columns

src/models.py

@@ -51,7 +51,10 @@ class Item(ItemBase):
 
     geodata_search_ts = Column(
         TSVECTOR,
-        Computed("to_tsvector('russian', geodata.description)", persisted=True),
+        Computed(
+            "to_tsvector('russian', coalesce(geodata.description, '') || ' ' || coalesce(geodata.additional_info, '') || ' ' || coalesce(geodata.comment, ''))",
+            persisted=True,
+        ),
     )