[fix] handle missing user id in bookmark view

Author: asciimoo

templates/view_bookmark.tpl

@@ -14,14 +14,14 @@
         <p class="is-size-7 has-text-grey has-text-weight-normal">{{ Truncate .Bookmark.URL 100 }}</p>
     </h4>
     <p>{{ .Bookmark.Notes }}</p>
+    {{ $uid := 0 }}
+    {{ if .User }}{{ $uid = .User.ID }}{{ end }}
     {{ if .Bookmark.Tags }}
-        {{ $uid := 0 }}
-        {{ if .User }}{{ $uid = .User.ID }}{{ end }}
         {{ range .Bookmark.Tags }}
         <a href="{{ if ne $uid $.Bookmark.UserID }}{{ BaseURL "/bookmarks" }}{{ else }}{{ BaseURL "/my_bookmarks" }}{{ end }}?tag={{ .Text }}"><span class="tag is-info">{{ .Text }}</span></a>
         {{ end }}
     {{ end }}
-    {{ block "snapshots" KVData "Snapshots" .Bookmark.Snapshots "IsOwn" (eq .Bookmark.UserID .User.ID ) }}{{ end }}
+    {{ block "snapshots" KVData "Snapshots" .Bookmark.Snapshots "IsOwn" (eq .Bookmark.UserID $uid ) }}{{ end }}
     {{ .Bookmark.CreatedAt | ToDate }} {{ if .Bookmark.Public }}Public{{ else }}Private{{ end }}
     {{ if .User }}
       {{ if eq .User.ID .Bookmark.UserID }}