Render a .js controller request as html

问题

I have a before_filter in my Rails app that sends users to login_url if they are logged out when they submit a request (in either html or js format).

I would like my format.js to produce an identical result to format.html, in the following case to render the view with the 'notice' layout. How can I do this?

respond_to do |format|
  format.js
  format.html{ render :layout => "notice" }
end

回答1:

you can force the usable formats like this :

respond_to do |format|
  format.js   { render :layout => "notice", :formats => [:html] }
  format.html { render :layout => "notice" }
end

EDIT:

What you need is some part of the document being replaced by the response. This is done by responding with a javascript that does the job:

In your controller :

respond_to do |format|
  format.js
  format.html { render :layout => "notice" }
end

In your login.js view :

$('#whatever').html('<%= escape_javascript( render :login, formats: [ :html ]) %>')

... or something similar

来源：https://stackoverflow.com/questions/10607369/render-a-js-controller-request-as-html