_top_footer.html.erb

blogs_helper.rb

  def post_link(post, blog = nil, html_options = {})
    method = (html_options.delete(:url) == true ? "url" : "path")
    # send "blog_post_#{method}", post.published_on.year, post.published_on.month, post.published_on.day, post.slug
    blog_post_path(post.published_on.year, post.published_on.month, post.published_on.day, post.slug)
  end

gistfile1.erb

<div id="secondary_content_inner">

    <h2>Featured Blog Articles</h2>
    <div class="two_column_left">
        <% Post.published.featured.by_date.limit(1).each do |post| %>
          <h4><%= link_to(post.title, post_link(post)) %></h4>
          <p class="meta">by <%= post.user.name %> on <%= post.published_on.strftime("%B %d, %Y").gsub(" 0"," ") %></p>
          <p><%= post.excerpt %> <%= link_to("Continue reading &raquo;", post_link(post)) %></p>
        <% end %>
    </div> <!-- / .two_column_left -->

    <div class="two_column_right">
      <% Post.published.by_date.limit(3).each do |post| %>
        <h4><%= link_to(post.title, post_link(post)) %></h4>
        <p class="meta recent_post_div">
          by <%= post.user.name %> on <%= post.published_on.strftime("%B %d, %Y").gsub(" 0"," ") %>
        </p>
      <% end %>
    </div> <!-- / .two_column_right -->


<%#= render :partial => 'where_you_can_find_us' %>

    <div style="clear:both;"></div> <!-- fixes IE6 float clearing -->                    
</div> <!-- end: #secondary_content_inner -->

log

ActionView::Template::Error (No route matches {:controller=>"posts", :action=>"show", :year=>2012, :month=>1, :day=>3, :id=>"2012-at-intridea"}):
    3:     <h2>Featured Blog Articles</h2>
    4:     <div class="two_column_left">
    5:         <% Post.published.featured.by_date.limit(1).each do |post| %>
    6:           <h4><%= link_to(post.title, post_link(post)) %></h4>
    7:           <p class="meta">by <%#= post.user.name %> on <%#= post.published_on.strftime("%B %d, %Y").gsub(" 0"," ") %></p>
    8:           <p><%#= post.excerpt %> <%#= link_to("Continue reading &raquo;", post_link(post)) %></p>
    9:         <% end %> -->
  actionpack (3.1.0) lib/action_dispatch/routing/route_set.rb:464:in `raise_routing_error'
  actionpack (3.1.0) lib/action_dispatch/routing/route_set.rb:454:in `generate'
  actionpack (3.1.0) lib/action_dispatch/routing/route_set.rb:493:in `generate'
  actionpack (3.1.0) lib/action_dispatch/routing/route_set.rb:518:in `url_for'
  actionpack (3.1.0) lib/action_dispatch/routing/url_for.rb:143:in `url_for'
  actionpack (3.1.0) lib/action_view/helpers/url_helper.rb:107:in `url_for'
  actionpack (3.1.0) lib/action_dispatch/routing/route_set.rb:200:in `blog_post_path'
  app/helpers/blogs_helper.rb:24:in `post_link'
  app/views/layouts/_top_footer.html.erb:6:in `block in _app_views_layouts__top_footer_html_erb__2050902216389512090_2157761020'
  activerecord (3.1.0) lib/active_record/relation.rb:15:in `each'
  activerecord (3.1.0) lib/active_record/relation.rb:15:in `each'
  app/views/layouts/_top_footer.html.erb:5:in `_app_views_layouts__top_footer_html_erb__2050902216389512090_2157761020'
  actionpack (3.1.0) lib/action_view/template.rb:144:in `block in render'

rake routes

 default_blog        /blog(.:format)                                        {:controller=>"blogs", :action=>"index"}
                      blog        /blog:id(.:format)                                     {:controller=>"blogs", :action=>"show"}
               blog_author        /blog/authors/:id(.:format)                            {:controller=>"authors", :action=>"show"}
                       tag        /tag/:id(.:format)                                     {:controller=>"blogs", :action=>"tag"}
                 blog_post        /:year/:month/:day/:id(.:format)                       {:year=>/\d{4}/, :month=>/\d{2}/, :day=>/\d{1,2}/, :controller=>"posts", :action=>"show"}
         default_blog_feed        /blog/feed.xml(.:format)                               {:controller=>"blogs", :action=>"feed"}
                 blog_feed        /blog/:id/feed.xml(.:format)                           {:controller=>"blogs", :action=>"feed"}
             posts_by_year        /blog/archives/:year(.:format)                         {:year=>/\d{4}/, :controller=>"posts", :action=>"index"}
            posts_by_month        /blog/archives/:year/:month(.:format)                  {:year=>/\d{4}/, :month=>/\d{2}/, :controller=>"posts", :action=>"index"}
              post_by_date        /blog/archives/:year/:month/:day(.:format)             {:year=>/\d{4}/, :month=>/\d{2}/, :day=>/\d{1,2}/, :controller=>"posts", :action=>"show"}
              post_by_slug        /:year/:month/:day/:id(.:format)                       {:month=>/\d{1,2}/, :year=>/\d{4}/, :controller=>"posts", :action=>"show"}

routes.rb

  # # Blog
  match '/blog' => "blogs#index", :as => "default_blog"
  match '/blog:id' => "blogs#show", :as => "blog"
  match '/blog/authors/:id' => "authors#show", :as => "blog_author"
  match '/tag/:id' => "blogs#tag", :as => "tag"
  match '/:year/:month/:day/:id' => "posts#show", :as => "blog_post",
        :constraints => { :year => /\d{4}/, :month => /\d{2}/, :day => /\d{1,2}/ }
  match '/blog/feed.xml' => "blogs#feed", :as => "default_blog_feed"
  match '/blog/:id/feed.xml' => "blogs#feed", :as => "blog_feed"
  match '/blog/archives/:year' => "posts#index", :as => "posts_by_year",
        :constraints => { :year => /\d{4}/ }
  match '/blog/archives/:year/:month' => "posts#index", :as => "posts_by_month",
        :constraints => { :year => /\d{4}/, :month => /\d{2}/ } 
  match '/blog/archives/:year/:month/:day' => "posts#show", :as => "post_by_date",
        :constraints => { :year => /\d{4}/, :month => /\d{2}/, :day => /\d{1,2}/ } 
  match '/:year/:month/:day/:id' => "posts#show", :as => "post_by_slug",
        :constraints => {:month => /\d{1,2}/, :year => /\d{4}/}