Fixes bug in loader when a relationship is empty

src/context/document/DocumentLoader.tsx

@@ -36,8 +36,9 @@ export function DocumentLoader({
         relationships: doc.expand?.relationships_via_primary || [],
         relatedDocuments:
           doc.expand?.relationships_via_primary?.flatMap(
-            (r: RecordModel) => r.expand?.secondary,
-          ) || [],
+            // Note: If there are no entries in the expanded secondaries there just won't be an entry instead of an empty list.
+            (r: RecordModel) => r.expand?.secondary ?? [],
+          ) ?? [],
       });
     }
 

src/context/document/reducer.ts

@@ -150,13 +150,20 @@ export function reducer(
         action.doc.id,
         setDocument(state, action.doc),
       );
+
       const updatedRelationshipsState = action.relationships.reduce(
         setRelationship.bind(null, action.doc.id),
         updatedDocumentState,
       );
+
+      const emptyRemainingRelationships = setAllRelationshipsEmpty(
+        action.doc.id,
+        updatedRelationshipsState,
+      );
+
       return action.relatedDocuments.reduce(
         setDocument,
-        updatedRelationshipsState,
+        emptyRemainingRelationships,
       );
     case "removeDocument":
       return removeDocument(action.docId, state);