You can also store the flash messages in the response headers using a after_filter block and display them using javascript:
class ApplicationController < ActionController::Base
after_filter :flash_to_headers
def flash_to_headers
return unless request.xhr?
response.headers['X-Message'] = flash[:error] unless flash[:error].blank?
# repeat for other flash types...
flash.discard # don't want the flash to appear when you reload page
end
And in application.js add a global ajax handler. For jquery do something like this:
$(document).ajaxError(function(event, request) {
var msg = request.getResponseHeader('X-Message');
if (msg) alert(msg);
});
Replace alert() with your own javascript flash function or try jGrowl.
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