Fixing Plugin and Mailer default_url_options.

Both the plugin hooks and Mailer were setting default_url_options incorrectly
and causing ActionContoller::UrlWritter to cache the settings on the module
(mattr_accessor) causing several url generators to fail in either the plugin
hooks or the Mailer.

* Replaced Mailer's use of the default_url_options accessor with the proper class method
* Replaced Hook's use of the default_url_options accessor with the proper class method on the ViewListener class
* Added a test to reproduce the bugs in the Mailer when a hook is registered (thanks Chaoqun Zou)

  #2542

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@2522 e93f8b46-1217-0410-a6f0-8f06a7374b81

app/models/mailer.rb

@@ -23,6 +23,12 @@ class Mailer < ActionMailer::Base
   include ActionController::UrlWriter
   include Redmine::I18n
 
+  def self.default_url_options
+    h = Setting.host_name
+    h = h.to_s.gsub(%r{\/.*$}, '') unless Redmine::Utils.relative_url_root.blank?
+    { :host => h, :protocol => Setting.protocol }
+  end
+  
   def issue_add(issue)
     redmine_headers 'Project' => issue.project.identifier,
                     'Issue-Id' => issue.id,
@@ -213,12 +219,6 @@ class Mailer < ActionMailer::Base
     set_language_if_valid Setting.default_language
     from Setting.mail_from
     
-    # URL options
-    h = Setting.host_name
-    h = h.to_s.gsub(%r{\/.*$}, '') unless Redmine::Utils.relative_url_root.blank?
-    default_url_options[:host] = h
-    default_url_options[:protocol] = Setting.protocol
-    
     # Common headers
     headers 'X-Mailer' => 'Redmine',
             'X-Redmine-Host' => Setting.host_name,

lib/redmine/hook.rb

@@ -60,7 +60,6 @@ module Redmine
         returning [] do |response|
           hls = hook_listeners(hook)
           if hls.any?
-            default_url_options[:only_path] ||= true
             hls.each {|listener| response << listener.send(hook, context)}
           end
         end
@@ -77,6 +76,7 @@ module Redmine
         Redmine::Hook.add_listener(child)
         super
       end
+
     end
 
     # Listener class used for views hooks.
@@ -96,6 +96,12 @@ module Redmine
       include ActionController::UrlWriter
       include ApplicationHelper
 
+      # Default to creating links using only the path.  Subclasses can
+      # change this default as needed
+      def self.default_url_options
+        {:only_path => true }
+      end
+      
       # Helper method to directly render a partial using the context:
       # 
       #   class MyHook < Redmine::Hook::ViewListener

test/unit/lib/redmine/hook_test.rb

@@ -19,6 +19,8 @@ require File.dirname(__FILE__) + '/../../../test_helper'
 
 class Redmine::Hook::ManagerTest < Test::Unit::TestCase
 
+  fixtures :issues
+  
   # Some hooks that are manually registered in these tests
   class TestHook < Redmine::Hook::ViewListener; end
   
@@ -64,7 +66,6 @@ class Redmine::Hook::ManagerTest < Test::Unit::TestCase
   
   def teardown
     @hook_module.clear_listeners
-    @hook_module.default_url_options = { }
   end
   
   def test_clear_listeners
@@ -144,5 +145,22 @@ class Redmine::Hook::ManagerTest < Test::Unit::TestCase
     assert_equal 'Test hook 1 listener. Test hook 2 listener.',
                  @view_hook_helper.call_hook(:view_layouts_base_html_head)
   end
+
+  def test_call_hook_should_not_change_the_default_url_for_email_notifications
+    issue = Issue.find(1)
+ 
+    ActionMailer::Base.deliveries.clear
+    Mailer.deliver_issue_add(issue)
+    mail = ActionMailer::Base.deliveries.last
+ 
+    @hook_module.add_listener(TestLinkToHook)
+    @hook_helper.call_hook(:view_layouts_base_html_head)
+ 
+    ActionMailer::Base.deliveries.clear
+    Mailer.deliver_issue_add(issue)
+    mail2 = ActionMailer::Base.deliveries.last
+ 
+    assert_equal mail.body, mail2.body
+   end
 end