Rails escape_javascript creates invalid JSON by escaping single quotes

Question

The escape_javascript method in ActionView escapes the apostrophe \' as backslash apostrophe \\\', which gives errors when parsing as JSON.

For

Answer 1

I ended up adding a new escape_json method to my application_helper.rb, based on the escape_javascript method found in ActionView::Helpers::JavaScriptHelper:

JSON_ESCAPE_MAP = {
    '\\'    => '\\\\',
    ' '<\/',
    "\r\n"  => '\n',
    "\n"    => '\n',
    "\r"    => '\n',
    '"'     => '\\"' }

def escape_json(json)
  json.gsub(/(\\|<\/|\r\n|[\n\r"])/) { JSON_ESCAPE_MAP[$1] }
end

Anyone know of a better workaround than this?