untested make_entry extension mechanism and hReview code

darcs-hash:20080228031015-ce558-faf527d0fb8a3d909d382ed711b8f4615e924708.gz

Author: bct

app/controllers/application.rb

@@ -1,5 +1,7 @@
 require_dependency "openid_login_system"
 
+require 'lib/collection_types'
+
 class NeedAuthSub < RuntimeError; end
 
 class RemoteFailure < RuntimeError
@@ -75,6 +77,7 @@ def n_url url
   # links:
   #   rel
   #   href
+  # extra: name of a method to be called on EntryConstructor
   def make_entry(params)
     unless params
       return Atom::Entry.new
@@ -137,6 +140,11 @@ def make_entry(params)
       end
     end
 
+    # extension mechanism
+    if EntryConstructor.singleton_methods.member? params['extra']
+      EntryConstructor.send params['extra'].to_sym, entry, params
+    end
+
     entry
   end
 

lib/collection_types.rb

@@ -0,0 +1,41 @@
+# this module contains methods for customizing an Atom::Entry for different
+# types of collections based on form input parameters
+module EntryConstructor
+  module_function
+
+  # a microformatted review of something
+  def hreview entry, params
+    review = <<END
+<div class="hreview">
+  <div class="item">
+END
+
+    review << if params['item']['url'].empty?
+                "<span class='fn'>" + CGI.escapeHTML(params['title']) + "</span>"
+              else
+                "<a class='url fn' href='" +
+                    CGI.escapeHTML(params['item']['url']) + "'>" +
+                    CGI.escapeHTML(params['title'])       + "</a>"
+              end
+
+    unless params['rating'].empty?
+      # 'rating' filled stars out of 5 hollow ones
+      rating = params['rating'].to_i
+      stars = ('★' * rating) + ('☆' * (5 - rating))
+
+      review << "<div>Rating: <abbr class='rating' title='#{rating}'>#{stars}</abbr></div>"
+    end
+
+    if entry.content
+      review << "<div class='description'>#{entry.content.html}</div>"
+    end
+
+    review <<<<END
+  </div>
+</div>
+END
+
+    entry.content = review
+    entry.content['type'] = 'html'
+  end
+end