Merge branch 'purge-requests' into develop

1 files changed, 15 insertions, 1 deletions

diff --git a/app/models/info_request.rb b/app/models/info_request.rb
index b5a1cd833..78121f5ea 100644
--- a/app/models/info_request.rb
+++ b/app/models/info_request.rb
@@ -23,6 +23,9 @@
 require 'digest/sha1'
 
 class InfoRequest < ActiveRecord::Base
+    include ActionView::Helpers::UrlHelper
+    include ActionController::UrlWriter
+
     strip_attributes!
 
     validates_presence_of :title, :message => N_("Please enter a summary of your request")
@@ -453,7 +456,6 @@ public
     # An annotation (comment) is made
     def add_comment(body, user)
         comment = Comment.new
-
         ActiveRecord::Base.transaction do
             comment.body = body
             comment.user = user
@@ -1042,6 +1044,18 @@ public
         end
         return ret
     end
+
+    before_save :purge_in_cache
+    def purge_in_cache
+        if !MySociety::Config.get('VARNISH_HOST').nil? && !self.id.nil?
+            # we only do this for existing info_requests (new ones have a nil id)
+            path = url_for(:controller => 'request', :action => 'show', :url_title => self.url_title, :only_path => true, :locale => :none)
+            req = PurgeRequest.new(:url => path,
+                                   :model => self.class.base_class.to_s,
+                                   :model_id => self.id)
+            req.save()
+        end
+    end
 end