Why does the truncate helper output html tags?

Question

Ruby on Rails

1. article.body = article text
Why does truncate print html tags to the screen? Can anyone use similar helpers that do the job?

<p><%= truncate simple_format article.body, length: 200 %></p>

Answer 1

Have you tried looking at the documentation ?

The result is marked as HTML-safe, but it is escaped by default, unless :escape is false. Care should be taken if text contains HTML tags or entities, because truncation may produce invalid HTML (such as unbalanced or incomplete tags).