[openstreetmap/openstreetmap-website] Provide a truncated view of recent diaries (PR #5121)

[Anton Khorev]

@AntonKhorev commented on this pull request.



> @@ -65,6 +65,42 @@ def description
 
     protected
 
+    def truncate_html(html_doc, max_length = nil, img_length = 1000)
+      return html_doc if max_length.nil?
+
+      doc = Nokogiri::HTML::DocumentFragment.parse(html_doc)
+      keep_or_discards = %w[p h1 h2 h3 h4 h5 h6 pre a table ul ol dl]
+      accumulated_length = 0
+      parent = nil

If you had to describe the possible values of `parent`, what would you say? It's not a parent of every traversed node.

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