announcement-test/app/controllers/announcement_feeds_controller.rb

require "rss"
class AnnouncementFeedsController < ApplicationController
	include Admin::AnnouncementsHelper
	def feed
		uid = params[:uid]
	    startdt = params[:start].blank? ? nil : params[:start]
	    enddt = params[:end].blank? ? nil : params[:end]
	    dt = params[:date].blank? ? nil : params[:date]
		feed_cache = BulletinFeedCache.where(uid: uid, start: startdt, end: enddt, date: dt)
		feed_cache_old = feed_cache.all_of([{:invalid_date.ne=>nil},{:invalid_date.lte => Time.now}]).last
		feed_cache.all_of([{:invalid_date.ne=>nil},{:invalid_date.lte => Time.now}]).destroy
		count = feed_cache.count
	    if count > 1
	      feed_cache.limit(count-1).destroy
	    end
	    feed_cache = feed_cache.first
		anns = ''
		if feed_cache.nil?
			anns = BulletinFeed.where(uid: uid).first.generate_one_cache_timeout(startdt: startdt,enddt: enddt,dt: dt,base_url: request.base_url,timeout: 20)
			anns = (feed_cache_old.content rescue "") if anns.nil?
		else
			anns = feed_cache.content
		end
		render :json => anns
	end

	def rssfeed
		uid = params[:uid]
		@bf = BulletinFeed.find_by(:uid => uid) rescue nil
		if !@bf.nil?
			tags = @bf.tag_ids
			if !tags.empty?
				@announcements = Bulletin.can_display_and_sorted.is_approved.filter_by_tags(tags)
			else
				@announcements = Bulletin.can_display_and_sorted.is_approved
			end
			categories = @bf.category_ids
			if !categories.empty?
				@announcements = @announcements.filter_by_categories(categories)
			end
		end
		respond_to do |format|
			format.html {redirect_to "/xhr/announcements/rssfeed/#{@bf.uid}.rss"}
			format.rss
		end
	end

	def feeds
		feeds = []
		BulletinFeed.all.each do |bf|
			feed = {}
			feed["title_translations"] = bf.title_translations
			feed["uid"] = bf.uid
			feed["url"] = "#{request.base_url}/xhr/announcements/feed/#{bf.uid}"
			feed["xml_url"] = "#{request.base_url}/xhr/announcements/rssfeed/#{bf.uid}.rss"
			feed["tags"] = []
			bf.tag_ids.each do |t|
				tag = Tag.find(t)
				d = {}
				d["name_translations"] = tag.name_translations
				feed["tags"] << d
			end
			feeds << feed
		end
		render :json => {"feeds" => feeds}.to_json
	end


end