code and routing to show a markdown page as slides

Author: alexch

app.rb

@@ -108,9 +108,8 @@ def render_page
 
       case ext
 
-        when "deck.md"
-          slides = Deck::Slide.split(src)
-          Deck::SlideDeck.new(:slides => slides).to_pretty
+        when "deck.md", "deck"
+          render_deck
 
         when "md"
           MarkdownPage.new(options).to_html
@@ -135,6 +134,11 @@ def render_page
     end
   end
 
+  def render_deck
+    slides = Deck::Slide.split(src)
+    Deck::SlideDeck.new(:slides => slides).to_pretty
+  end
+
   before do
     expires 3600, :public
   end
@@ -165,7 +169,11 @@ def render_page
 
   get "/:site/:name.:ext" do
     if sites.include?(params[:site])
-      send_file "#{site_dir}/#{params[:name]}.#{params[:ext]}"
+      if params[:ext] == "deck"  # to show a markdown page as slides, change the ".md" to ".deck"
+        render_deck
+      else
+        send_file "#{site_dir}/#{params[:name]}.#{params[:ext]}"
+      end
     end
   end
 

lib/doc_page.rb

@@ -115,6 +115,7 @@ def body_content
     widget Contents, locale: @locale, site_name: site_name, page_name: page_name
 
     main {
+      before_title
       h1 doc_title, class: "doc_title"
       div(class: :doc) {
         doc_content
@@ -163,4 +164,8 @@ def body_content
     }
   end
 
+  def before_title
+    # placeholder for subclass override
+  end
+
 end

lib/markdown_page.rb

@@ -3,6 +3,11 @@
 require 'markdown_renderer'
 
 class MarkdownPage < DocPage
+  def before_title
+    file_base_name = file_name.gsub(/\.md$/, '')
+    a "Slides", href: "#{file_base_name}.deck", style: 'float: right'
+  end
+
   def doc_content
     rawtext MarkdownRenderer.render(src)
   end