Methods
Constants
HTML_ESCAPE = { '&' => '&amp;', '>' => '&gt;', '<' => '&lt;', '"' => '&quot;' }
JSON_ESCAPE = { '&' => '\u0026', '>' => '\u003E', '<' => '\u003C' }
Public Instance methods
h(s)

Alias for html_escape

html_escape(s)

A utility method for escaping HTML tag characters. This method is also aliased as h.

In your ERb templates, use this method to escape any unsafe content. For example:

  <%=h @person.name %>

Example:

  puts html_escape("is a > 0 & a < 10?")
  # => is a &gt; 0 &amp; a &lt; 10?
This method is also aliased as h
    # File activesupport/lib/active_support/core_ext/string/output_safety.rb, line 17
17:     def html_escape(s)
18:       s = s.to_s
19:       if s.html_safe?
20:         s
21:       else
22:         s.gsub(/[&"><]/) { |special| HTML_ESCAPE[special] }.html_safe
23:       end
24:     end
j(s)

Alias for json_escape

json_escape(s)

A utility method for escaping HTML entities in JSON strings. This method is also aliased as j.

In your ERb templates, use this method to escape any HTML entities:

  <%=j @person.to_json %>

Example:

  puts json_escape("is a > 0 & a < 10?")
  # => is a \u003E 0 \u0026 a \u003C 10?
This method is also aliased as j
    # File activesupport/lib/active_support/core_ext/string/output_safety.rb, line 41
41:     def json_escape(s)
42:       s.to_s.gsub(/[&"><]/) { |special| JSON_ESCAPE[special] }
43:     end