Alters one and only one line of the Rails button_to. See below.
# File lib/facebooker/rails/facebook_url_helper.rb, line 52 def button_to_with_facebooker(name, options={}, html_options = {}) if !respond_to?(:request_comes_from_facebook?) || !request_comes_from_facebook? button_to_without_facebooker(name,options,html_options) else html_options = html_options.stringify_keys convert_boolean_attributes!(html_options, %w( disabled )) method_tag = '' if (method = html_options.delete('method')) && %w{put delete}.include?(method.to_s) method_tag = tag('input', :type => 'hidden', :name => '_method', :value => method.to_s) end form_method = method.to_s == 'get' ? 'get' : 'post' request_token_tag = '' if form_method == 'post' && protect_against_forgery? request_token_tag = tag(:input, :type => "hidden", :name => request_forgery_protection_token.to_s, :value => form_authenticity_token) end if confirm = html_options.delete("confirm") # this line is the only change => html_options["onclick"] = "return #{confirm_javascript_function(confirm)}" html_options["onclick"] = "#{confirm_javascript_function(confirm, 'a.getForm().submit();')}return false;" end url = options.is_a?(String) ? options : self.url_for(options) name ||= url html_options.merge!("type" => "submit", "value" => name) "<form method=\"#{form_method}\" action=\"#{escape_once url}\" class=\"button-to\"><div>" + method_tag + tag("input", html_options) + request_token_tag + "</div></form>" end end