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# app/controllers/track_controller.rb:
# Publically visible email alerts and RSS - think an alert system crossed with
# social bookmarking.
#
# Copyright (c) 2008 UK Citizens Online Democracy. All rights reserved.
# Email: francis@mysociety.org; WWW: http://www.mysociety.org/
#
# $Id: track_controller.rb,v 1.27 2008-09-11 09:36:10 francis Exp $
class TrackController < ApplicationController
# Track all updates to a particular request
def track_request
@info_request = InfoRequest.find_by_url_title(params[:url_title])
@track_thing = TrackThing.create_track_for_request(@info_request)
return atom_feed_internal if params[:feed] == 'feed'
if self.track_set
redirect_to request_url(@info_request)
end
end
# Track all new/successful requests
def track_list
@view = params[:view]
if @view.nil?
@track_thing = TrackThing.create_track_for_all_new_requests
elsif @view == 'successful'
@track_thing = TrackThing.create_track_for_all_successful_requests
else
raise "unknown request list view " + @view.to_s
end
return atom_feed_internal if params[:feed] == 'feed'
if self.track_set
redirect_to request_list_url(:view => @view)
end
end
# Track all updates to a particular public body
def track_public_body
@public_body = PublicBody.find_by_url_name(params[:url_name])
@track_thing = TrackThing.create_track_for_public_body(@public_body)
return atom_feed_internal if params[:feed] == 'feed'
if self.track_set
redirect_to public_body_url(@public_body)
end
end
# Track a user
def track_user
@track_user = User.find_by_url_name(params[:url_name])
@track_thing = TrackThing.create_track_for_user(@track_user)
return atom_feed_internal if params[:feed] == 'feed'
if self.track_set
redirect_to user_url(@track_user)
end
end
# Track a search term
def track_search_query
# XXX should be better thing in rails routes than having to do this
# join just to get / and . to work in a query.
query_array = params[:query_array]
@query = query_array.join("/")
@track_thing = TrackThing.create_track_for_search_query(@query)
return atom_feed_internal if params[:feed] == 'feed'
if self.track_set
redirect_to search_url(@query)
end
end
# Generic request tracker - set @track_thing before calling
def track_set
if @user
@existing_track = TrackThing.find_by_existing_track(@user, @track_thing)
if @existing_track
flash[:notice] = "You are already being emailed updates about " + @track_thing.params[:list_description]
return true
end
end
if not authenticated?(@track_thing.params)
return false
end
@track_thing.track_medium = 'email_daily'
@track_thing.tracking_user_id = @user.id
@track_thing.save!
flash[:notice] = "You will now be emailed updates about " + @track_thing.params[:list_description]
return true
end
# Atom feed (like RSS) for the track
def atom_feed
@track_thing = TrackThing.find(params[:track_id].to_i)
if @track_thing.track_medium != 'feed'
raise "can only view feeds for feed tracks, not email ones"
end
atom_feed_internal
end
def atom_feed_internal
@xapian_object = perform_search([InfoRequestEvent], @track_thing.track_query, @track_thing.params[:feed_sortby], nil, 25, 1)
respond_to do |format|
format.atom { render :template => 'track/atom_feed' }
end
end
# Change or delete a track
def update
track_thing = TrackThing.find(params[:track_id].to_i)
if not authenticated_as_user?(track_thing.tracking_user,
:web => "To cancel this alert",
:email => "Then you can cancel the alert.",
:email_subject => "Cancel a WhatDoTheyKnow alert"
)
# do nothing - as "authenticated?" has done the redirect to signin page for us
return
end
new_medium = params[:track_medium]
if new_medium == 'delete'
track_thing.destroy
flash[:notice] = "You will no longer be emailed updates about " + track_thing.params[:list_description]
redirect_to params[:r]
# Reuse code like this if we let medium change again.
#elsif new_medium == 'email_daily'
# track_thing.track_medium = new_medium
# track_thing.created_at = Time.now() # as created_at is used to limit the alerts to start with
# track_thing.save!
# flash[:notice] = "You are now tracking " + track_thing.params[:list_description] + " by email daily"
# redirect_to user_url(track_thing.tracking_user)
else
raise "new medium not handled " + new_medium
end
end
end
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