Merge pull request #5094 from weseek/imprv/85046-modify-null-tag-part

imprv: add filter method about tag to recent changes

packages/app/src/components/Sidebar/RecentChanges.tsx

@@ -56,16 +56,13 @@ function LargePageItem({ page }) {
   }
 
   const tags = page.tags;
-  // when tag document is deleted from database directly tags includes null
-  const tagElements = tags.includes(null)
-    ? <></>
-    : tags.map((tag) => {
-      return (
-        <a key={tag.name} href={`/_search?q=tag:${tag.name}`} className="grw-tag-label badge badge-secondary mr-2 small">
-          {tag.name}
-        </a>
-      );
-    });
+  const tagElements = tags.map((tag) => {
+    return (
+      <a key={tag.name} href={`/_search?q=tag:${tag.name}`} className="grw-tag-label badge badge-secondary mr-2 small">
+        {tag.name}
+      </a>
+    );
+  });
 
   return (
     <li className="list-group-item py-3 px-0">

packages/app/src/server/routes/apiv3/pages.js

@@ -381,7 +381,9 @@ module.exports = (crowi) => {
         if (!relationsMap.has(pageId)) {
           relationsMap.set(pageId, []);
         }
-        relationsMap.get(pageId).push(relation.relatedTag);
+        if (relation.relatedTag != null) {
+          relationsMap.get(pageId).push(relation.relatedTag);
+        }
       });
       // add tags to each page
       result.pages.forEach((page) => {