Super simple CMS with Rails Admin

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rails g model Page title:string content:text slug:string

rake db:migrate

rails g controller Pages --skip-assets

Gemfile

# Add the gem
gem 'rails_admin'

Page.rb

class Page < ActiveRecord::Base
  attr_accessible :content, :slug, :title

  # add this method for friendly urls
  def to_param
    slug
  end
end

pages_controller.rb

class PagesController < ApplicationController
  def show
    @page = Page.find_by_slug(params[:slug])
    render :inline => @page.content.html_safe, :layout => true
  end
end

rails_admin.rb

# add the configuration for editing a page config/initializers/rails_admin.rb

  config.model Page do
    field :title
    field :slug
    field :content, :text do
      ckeditor true
    end
  end

routes.rb

# add to your routes:

get "pages/:slug" => "pages#show", :as => 'page'

use page_path(slug) in your views and links

Nice! This is a workable model that expands on what's in the rails_admin demo app (which doesn't really work); much better. Kudos for this

This is nice and simple. one thing though, attr_accessible should be attr_accessor (in rails 4 at least)