rails - passing regex to list of allowed attributes for sanitize method

Is it possible to pass regular expression to the list of allowed html attributes for sanitize method in rails3? In my particular situation I would like to allow all attributes starting with "data-"

Either on sanitize call

sanitize(my_string, :tags => %w(div span), :attributes => my_regular_expression)开发者_JAVA百科

or in application.rb like

config.action_view.sanitized_allowed_attributes = 'id', 'style', my_regular_expression

hmmm... computer says no.

irb(main):018:0> my_string = "<div style=\"color:red;\" id=\"abcd\">abcd-def></div><span class=\"blah\">abcghi</span><a href=\"http://mylink.com/\">mylink</a>"
=> "<div style=\"color:red;\" id=\"abcd\">abcd-def></div><span class=\"blah\">abcghi</span><a href=\"http://mylink.com/\">mylink</a>"
irb(main):006:0> sanitize(my_string, :tags => %w(div span), :attributes => ['id'])
=> "<div id=\"abcd\">abcd-def></div><span>abcghi</span>mylink"
irb(main):005:0> sanitize(my_string, :tags => %w(div span), :attributes => [/id/])
=> "<div>abcd-def></div><span>abcghi</span>mylink"
irb(main):020:0> sanitize(my_string, :tags => %w(div span), :attributes => /id/)
NoMethodError: undefined method `include?' for /id/:Regexp

Would be great feature, though. You could add it as a feature request on rails.