How to add after_filter-style render

Rails
1

Hello

I would like to execute specific action rendering something into page
after each of my ajax calls. In example I would like to update some
div or display an alert.

How I imagine it could work is as follows

class ApplicationController < ActionController::Base
after_filter :do_something_after_each_ajax_call

def do_something_after_each_ajax_call
if request.xml_http_request?
render :update do |page|
page << "alert(‘doing something!’);
end
end
end
end

Of course code above will yield with “Can only render or redirect once
per action”. How would You approach this problem?

2

This may seen kind of lame but works as far. If anyone knows better
solution - share it please :slight_smile:

module ActionController
class Base
private

def render_for_text_with_flashes(text = nil, status = nil,

append_response = false) #:nodoc:
result = render_for_text_without_flashes(text, status,
append_response)

  if response.content_type == Mime::JS
    response.body << "$('messages').update('#

{self.instance_variable_get("@template").message_block :flash_types =>
%w(back confirm error info warn notice), :on =>
MODEL_NAMES_FOR_MB}’);new Effect.Highlight(‘messages’); "
end
result
end

alias_method_chain :render_for_text, :flashes

end
end