7 Textile 2009-05-11T10:01:14+02:00 1 757 en 0 5 three_profiling_tools 2009-05-11T14:29:08+02:00 published

Ever want to know what Rails is doing under the hood during a request? In this episode Ryan Bates shows three different profiling tools: New Relic RPM, FiveRuns TuneUp, and Rack::Bug.

2009-05-12T12:31:48+02:00 205 http://railscasts.com/episodes/161-three-profiling-tools 7 Textile 2008-08-12T19:18:03+02:00 1 380 en 0 3 passenger_in_development_railscasts 2009-02-27T09:04:35+01:00 published

Tired of juggling multiple Rails apps around with script/server? See how to set up Passenger in development so each one has its own local domain name.

2009-02-27T10:04:36+01:00 2 http://railscasts.com/episodes/122-passenger-in-development 7 Textile 2008-08-04T17:55:29+02:00 1 366 en 0 2 non_active_record_model queued

This episode of Railscasts will show you how to make a model which isn't based on Active Record. You may want to do this if a resource isn't backed by the database.

2008-08-04T19:40:16+02:00 2 http://railscasts.com/episodes/121-non-active-record-model 7 Textile 2008-06-23T16:10:30+02:00 1 289 en 0 4 caching_in_rails_2_1 2008-06-25T15:43:00+02:00 published

Rails 2.1 brings some new caching features which makes it very easy to cache any values including models. See how in this episode of Railscasts.

2008-07-01T03:41:06+02:00 3 http://railscasts.com/episodes/115 7 Textile 2008-05-23T09:21:39+02:00 8 195 en 0 3 railscast_gem_dependencies 2008-05-23T21:20:59+02:00 published

In Rails 2.1 we now have the ability to set gem dependencies. Now it's easier than ever to specify which ruby gems our rails app relies on.

2008-05-23T23:21:01+02:00 3 http://railscasts.com/episodes/110 7 Textile 2008-05-12T13:09:08+02:00 1 169 en 0 3 gitting_rails_2_1_rc1 2008-05-12T16:02:03+02:00 published

Rails 2.1 Release Candidate 1 was just released! In this railscasts episode Ryan Bates will show you how to install it into your Rails project.

2008-05-14T00:28:44+02:00 8 http://railscasts.com/episodes/105 7 Textile 2008-05-05T17:06:37+02:00 1 149 en 0 3 exception_notifications 2008-05-05T21:30:01+02:00 published

If you're running a production site, it's a good idea to record all exceptions which occur. See how to set up a notification system which does that in this episode. Yet another great railscast.

2008-05-06T01:12:23+02:00 8 http://railscasts.com/episodes/104 7 <h2>This is how he did it:</h2> <h3>Generators</h3> <pre> <code> script/generate scaffold announcement message:text starts_at:datetime ends_at:datetime script/generate controller javascripts </pre> </code> <h3>View</h3> <pre> <code> &lt;!-- layouts/application.html.erb --&gt; &lt;% unless current_announcements.empty? %&gt; &lt;div id="announcement"&gt; &lt;% for announcement in current_announcements %&gt; &lt;p&gt;&lt;%=h announcement.message %&gt;&lt;/p&gt; &lt;% end %&gt; &lt;p&gt;&lt;%= link_to_remote "Hide this message", :url =&gt; "/javascripts/hide_announcement.js" %&gt;&lt;/p&gt; &lt;/div&gt; &lt;% end %&gt; </pre> </code> <h3>Model/Helper/Controller/RJS/Route</h3> <pre> <code> # models/announcement.rb def self.current_announcements(hide_time) with_scope :find =&gt; { :conditions =&gt; "starts_at &lt;= now() AND ends_at &gt;= now()" } do if hide_time.nil? find(:all) else find(:all, :conditions =&gt; ["updated_at &gt; ?", hide_time]) end end end # application_helper.rb def current_announcements @current_announcements ||= Announcement.current_announcements(session[:announcement_hide_time]) end # javascripts_controller.rb def hide_announcement session[:announcement_hide_time] = Time.now end # hide_announcement.js.rjs page[:announcement].hide # routes.rb map.connect ":controller/:action.:format" </pre> </code> <h2>This is how you could do it</h2> <h3>Plugin installation</h3> <pre> <code> script/plugin install http://pmade.com/svn/oss/stickies/trunk </pre> </code> <h3>Somewhere in your application layout:</h3> <pre> <code> &lt;%= render_stickies %&gt; </pre> </code> <h3>Application controller</h3> <pre> <code> notice_stickie("This is an announcement!") </pre> </code> Textile h2. This is how he did it: h3. Generators <pre> <code> script/generate scaffold announcement message:text starts_at:datetime ends_at:datetime script/generate controller javascripts </pre> </code> h3. View <pre> <code> <!-- layouts/application.html.erb --> <% unless current_announcements.empty? %> <div id="announcement"> <% for announcement in current_announcements %> <p><%=h announcement.message %></p> <% end %> <p><%= link_to_remote "Hide this message", :url => "/javascripts/hide_announcement.js" %></p> </div> <% end %> </pre> </code> h3. Model/Helper/Controller/RJS/Route <pre> <code> # models/announcement.rb def self.current_announcements(hide_time) with_scope :find => { :conditions => "starts_at <= now() AND ends_at >= now()" } do if hide_time.nil? find(:all) else find(:all, :conditions => ["updated_at > ?", hide_time]) end end end # application_helper.rb def current_announcements @current_announcements ||= Announcement.current_announcements(session[:announcement_hide_time]) end # javascripts_controller.rb def hide_announcement session[:announcement_hide_time] = Time.now end # hide_announcement.js.rjs page[:announcement].hide # routes.rb map.connect ":controller/:action.:format" </pre> </code> h2. This is how you could do it h3. Plugin installation <pre> <code> script/plugin install http://pmade.com/svn/oss/stickies/trunk </pre> </code> h3. Somewhere in your application layout: <pre> <code> <%= render_stickies %> </pre> </code> h3. Application controller <pre> <code> notice_stickie("This is an announcement!") </pre> </code> 2008-04-28T11:13:43+02:00 1 102 en 0 4 site_wide_announcements 2008-04-28T09:15:59+02:00 published

Sometimes you need to display an administrative announcement to every page on the site and give the users the ability to hide the announcement. See how in this episode. Yet another great railscast. Follow the link and make sure to have a look at our content page for an alternative way to do it.

2008-05-01T19:04:03+02:00 1 http://railscasts.com/episodes/103