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 %>
puts html_escape("is a > 0 & a < 10?") # => is a > 0 & a < 10?
# File lib/active_support/core_ext/string/output_safety.rb, line 19 def html_escape(s) s = s.to_s if s.html_safe? s else s.gsub(/[&"'><]/, HTML_ESCAPE).html_safe end end
A utility method for escaping HTML entities in JSON strings using uXXXX JavaScript escape sequences for string literals:
json_escape("is a > 0 & a < 10?") # => is a \u003E 0 \u0026 a \u003C 10?
Note that after this operation is performed the output is not valid JSON. In particular double quotes are removed:
json_escape('{"name":"john","created_at":"2010-04-28T01:39:31Z","id":1}') # => {name:john,created_at:2010-04-28T01:39:31Z,id:1}
This method is also aliased as j
, and available as a helper in
Rails templates:
<%=j @person.to_json %>
# File lib/active_support/core_ext/string/output_safety.rb, line 64 def json_escape(s) result = s.to_s.gsub(/[&"><]/) { |special| JSON_ESCAPE[special] } s.html_safe? ? result.html_safe : result end