Related topics:

<% for (i, topic) in self.topics.iter().enumerate() { let mut topic_sanitized = ""; if let Some(value) = self.topics_sanitized.get(i) { topic_sanitized = value; } let topic_sanitized_url = format!("/{}/{}/{}/", self.base_dir, self.topic_base_dir, topic_sanitized); %> <%= topic %> <% } %>