app/controllers/feed_controller.rb

   1 class FeedController < ApplicationController
   2
   3   def index
   4     @feeds = FeedItem.select(:feed_name).distinct
   5     respond_to do |format|
   6       format.html
   7       format.rss { render :layout => false }
   8     end
   9   end
  10
  11   def show
  12     if FeedItem::valid_feed_name?(params[:feed_name])
  13       @feed_name = params[:feed_name]
  14       @feed_items = FeedItem.in_feed(@feed_name)
  15       respond_to do |format|
  16         if @feed_items.empty?
  17           flash[:notice] = "No items in feed #{@feed_name}"
  18           format.html { redirect_to index_path }
  19           format.rss  { render :layout => false }
  20         else
  21           format.html
  22           format.rss { render :layout => false }
  23         end
  24       end
  25     else
  26       respond_to do |format|
  27         flash[:notice] = "Invalid feed name"
  28         format.html { redirect_to index_path }
  29         format.rss  { head :not_found}
  30       end
  31     end
  32   end
  33
  34   def update
  35     if FeedItem::valid_feed_name?(params[:feed_name])
  36       item = FeedItem.in_feed(params[:feed_name]).entitled(params[:title]).take
  37       if item
  38         if params[:description].empty?
  39           destroy_item(item)
  40         else
  41           update_item(item)
  42         end
  43       else
  44         create_item
  45       end
  46     else
  47       respond_to do |format|
  48         flash[:notice] = "Invalid feed name"
  49         format.html { redirect_to index_path }
  50         format.rss  { head :not_found }
  51       end
  52     end
  53   end
  54
  55
  56   # private
  57
  58   private def create_item
  59     item = FeedItem.new(:feed_name => params[:feed_name],
  60       :title => params[:title],
  61       :description => params[:description])
  62     item.save!
  63     flash[:notice] = "Element #{params[:title]} created"
  64     respond_to do |format|
  65       format.html { redirect_to feed_path(params[:feed_name]) }
  66       format.rss  { head :ok }
  67     end
  68   rescue ActiveRecord::RecordInvalid => error
  69     flash[:notice] = "Element #{params[:title]} could not be created"
  70     respond_to do |format|
  71       format.html { redirect_to feed_path(params[:feed_name]) }
  72       format.rss  { head :unprocessable_entity }
  73     end
  74   end
  75
  76   private def update_item(item)
  77     if item.update_attribute(:description, params[:description])
  78       flash[:notice] = "Element #{params[:title]} updated"
  79       respond_to do |format|
  80         format.html { redirect_to feed_path(params[:feed_name]) }
  81         format.rss  { head :ok }
  82       end
  83     else
  84       flash[:notice] = "Element #{params[:title]} could not be updated"
  85       respond_to do |format|
  86         format.html { redirect_to feed_path(params[:feed_name]) }
  87         format.rss  { head :unprocessable_entity }
  88       end
  89     end
  90   end
  91
  92   private def destroy_item(item)
  93     if item.destroy
  94       flash[:notice] = "Element #{params[:title]} deleted"
  95       respond_to do |format|
  96         format.html { redirect_to feed_path(params[:feed_name]) }
  97         format.rss  { head :ok }
  98       end
  99     else
 100       flash[:notice] = "Element #{params[:title]} could not be deleted"
 101       respond_to do |format|
 102         format.html { redirect_to feed_path(params[:feed_name]) }
 103         format.rss  { head :unprocessable_entity }
 104       end
 105     end
 106   end
 107
 108 end