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In your view:

<%= link_to "Load more", posts_path(@posts, page: @posts.current_page+1), id: "load-more-posts", remote: true %>

In your controller:

respond_to :html, :js, only: [:index]

def index
#!/usr/bin/ruby
require 'rss'
# Usage
# $ ./railscasts.rb http://railscasts.com/subscriptions/YOURRAILSCASTRSS/\/
# episodes.rss
# OR
# $ ./railscasts.rb
p 'Downloading rss index'
// SASS variable overrides must be declared before loading up Active Admin's styles.
//
// To view the variables that Active Admin provides, take a look at
// `app/assets/stylesheets/active_admin/mixins/_variables.css.scss` in the
// Active Admin source.
//
// For example, to change the sidebar width:
// $sidebar-width: 242px;
// Active Admin's got SASS!

Friendly URLs

By default, Rails applications build URLs based on the primary key -- the id column from the database. Imagine we have a Person model and associated controller. We have a person record for Bob Martin that has id number 6. The URL for his show page would be:

/people/6

But, for aesthetic or SEO purposes, we want Bob's name in the URL. The last segment, the 6 here, is called the "slug". Let's look at a few ways to implement better slugs.