archives: raise exception if not configured.

app/controllers/pool_versions_controller.rb

@@ -29,17 +29,7 @@ private
 
   def check_availabililty
     if !PoolArchive.enabled?
-      respond_to do |format|
-        format.html do
-          flash[:notice] = "Archive service is not configured. Pool versions are not saved."
-          redirect_to :back
-        end
-        format.json do
-          render json: {success: false, reason: "Archive service is not configured"}.to_json, status: 501
-        end
-      end
-
-      return false
+      raise NotImplementedError.new("Archive service is not configured. Pool versions are not saved.")
     end
   end
 end

app/controllers/post_versions_controller.rb

@@ -1,5 +1,6 @@
 class PostVersionsController < ApplicationController
   before_filter :member_only
+  before_filter :check_availabililty
   respond_to :html, :xml, :json
 
   def index
@@ -25,4 +26,12 @@ class PostVersionsController < ApplicationController
       format.js
     end
   end
+
+  private
+
+  def check_availabililty
+    if !PostArchive.enabled?
+      raise NotImplementedError.new("Archive service is not configured. Post versions are not saved.")
+    end
+  end
 end