Am back again and this time really after a long time. Actually occupied with my current company and it is bootstrapping :) wish me luck.
Any how recent problem that i faced was, uploading file (multipart form request) was giving "ActionController::InvalidAuthenticityToken" error in rails4 while a normal form post was working great, which is kind of strange and it was giving error for synchronous and asynchronous request both.
So whats the way to fix it ?
Add your own authenticity_token params which is missing in rails form (which is strange again) but add a hidden field something like
<%= hidden_field_tag :authenticity_token, form_authenticity_token -%>
and now everything is back to normal :) i hope for you too.