Fixed that viewing the history of a wiki page with attachments raises an error (#12801).

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@11157 e93f8b46-1217-0410-a6f0-8f06a7374b81

app/helpers/application_helper.rb

@@ -545,9 +545,9 @@ module ApplicationHelper
 
   def parse_inline_attachments(text, project, obj, attr, only_path, options)
     # when using an image link, try to use an attachment, if possible
-    if options[:attachments].present? || (obj && obj.respond_to?(:attachments))
+    if options[:attachments].present? || obj.respond_to?(:attachments)
       attachments = options[:attachments] || []
-      attachments += obj.attachments if obj
+      attachments += obj.attachments if obj.respond_to?(:attachments)
       text.gsub!(/src="([^\/"]+\.(bmp|gif|jpg|jpe|jpeg|png))"(\s+alt="([^"]*)")?/i) do |m|
         filename, ext, alt, alttext = $1.downcase, $2, $3, $4
         # search for the picture in attachments

test/fixtures/wiki_content_versions.yml

@@ -99,4 +99,18 @@ wiki_content_versions_006:
   version: 3
   author_id: 1
   comments: 
+wiki_content_versions_007: 
+  data: |-
+    h1. Page with an inline image
+    
+    This is an inline image:
+    
+    !logo.gif!
+  updated_on: 2007-03-08 00:18:07 +01:00
+  page_id: 4
+  wiki_content_id: 4
+  id: 7
+  version: 1
+  author_id: 1
+  comments: 
   

test/functional/wiki_controller_test.rb

@@ -68,6 +68,19 @@ class WikiControllerTest < ActionController::TestCase
     assert_select 'a[href=?]', '/projects/ecookbook/wiki/CookBook_documentation', :text => /Current version/
   end
 
+  def test_show_old_version_with_attachments
+    page = WikiPage.find(4)
+    assert page.attachments.any?
+    content = page.content
+    content.text = "update"
+    content.save!
+
+    get :show, :project_id => 'ecookbook', :id => page.title, :version => '1'
+    assert_kind_of WikiContent::Version, assigns(:content)
+    assert_response :success
+    assert_template 'show'
+  end
+
   def test_show_old_version_without_permission_should_be_denied
     Role.anonymous.remove_permission! :view_wiki_edits