Rails 3: simple_format not printing "< xx >"

I want to print text to HTML. I'm using si开发者_Go百科mple_format, however everything seems to be right except that what is inside "< >" is not printed.

Thanks.

You can pass in a :sanitize option to tell it not to sanitize your tags:

<%= simple_text(my_string, nil, :sanitize => false) %>