app/controllers/feed_controller.rb

   1 class FeedController < ApplicationController
   2
   3   skip_before_filter :verify_authenticity_token
   4
   5   def index
   6     @feeds = FeedItem.find(:all, :select => 'DISTINCT feed_name')
   7     respond_to do |format|
   8       format.html
   9       format.rss { render :layout => false }
  10     end
  11   end
  12
  13
  14   def show
  15     if valid_feed_name?(params[:feed_name])
  16       @feed_items = FeedItem.find_all_by_feed_name(params[:feed_name])
  17       @feed_name = params[:feed_name]
  18       respond_to do |format|
  19         if @feed_items == []
  20           flash[:notice] = "No items in feed #{params[:feed_name]}"
  21           format.html { redirect_to index_url }
  22           format.rss  { render :layout => false }
  23         else
  24           format.html
  25           format.rss { render :layout => false }
  26         end
  27       end
  28     else
  29       respond_to do |format|
  30         flash[:notice] = "Invalid feed name"
  31         format.html { redirect_to index_url }
  32         format.rss  { head :not_found}
  33       end
  34     end
  35   end
  36
  37
  38   def update
  39     if valid_feed_name?(params[:new_feed_name])
  40       item = FeedItem.find_by_feed_name_and_title(params[:new_feed_name], params[:title])
  41       if item
  42         if params[:description] == ''
  43           destroy_item(item)
  44         else
  45           update_item(item)
  46         end
  47       else
  48         create_item
  49       end
  50     else
  51       respond_to do |format|
  52         flash[:notice] = "Invalid feed name"
  53         format.html { redirect_to index_url }
  54         format.rss  { head :not_found }
  55       end
  56     end
  57   end
  58
  59
  60   private
  61
  62   def valid_feed_name?(feed_name)
  63     Rack::Utils::escape(feed_name) == feed_name and
  64       Rack::Utils::unescape(feed_name) == feed_name and
  65       feed_name != 'index' and
  66       feed_name != 'show' and
  67       feed_name != 'update' and
  68       feed_name != 'action'
  69   end
  70
  71
  72   def create_item
  73     item = FeedItem.new(:feed_name => params[:new_feed_name],
  74       :title => params[:title],
  75       :description => params[:description])
  76     item.save!
  77     flash[:notice] = "Element #{params[:title]} created"
  78     respond_to do |format|
  79       format.html { redirect_to feed_url(params[:new_feed_name]) }
  80       format.rss  { head :ok }
  81     end
  82   rescue ActiveRecord::RecordInvalid => error
  83     flash[:notice] = "Element #{params[:title]} could not be created"
  84     respond_to do |format|
  85       format.html { redirect_to feed_url(params[:new_feed_name]) }
  86       format.rss  { head :unprocessable_entity }
  87     end
  88   end
  89
  90
  91   def update_item(item)
  92     if item.update_attribute(:description, params[:description])
  93       flash[:notice] = "Element #{params[:title]} updated"
  94       respond_to do |format|
  95         format.html { redirect_to feed_url(params[:new_feed_name]) }
  96         format.rss  { head :ok }
  97       end
  98     else
  99       flash[:notice] = "Element #{params[:title]} could not be updated"
 100       respond_to do |format|
 101         format.html { redirect_to feed_url(params[:new_feed_name]) }
 102         format.rss  { head :unprocessable_entity }
 103       end
 104     end
 105   end
 106
 107
 108   def destroy_item(item)
 109     if item.destroy
 110       flash[:notice] = "Element #{params[:title]} destroyed"
 111       respond_to do |format|
 112         format.html { redirect_to feed_url(params[:new_feed_name]) }
 113         format.rss  { head :ok }
 114       end
 115     else
 116       flash[:notice] = "Element #{params[:title]} could not be destroyed"
 117       respond_to do |format|
 118         format.html { redirect_to feed_url(params[:new_feed_name]) }
 119         format.rss  { head :unprocessable_entity }
 120       end
 121     end
 122   end
 123
 124 end