Fix undefined method error in issue list PDF export when export contains a custom field block column with full width layout enabled that is not part of the tracker of the exported ticket(s) (#39534).

git-svn-id: https://svn.redmine.org/redmine/trunk@22418 e93f8b46-1217-0410-a6f0-8f06a7374b81

test/functional/issues_controller_test.rb

@@ -1194,6 +1194,29 @@ class IssuesControllerTest < Redmine::ControllerTest
     assert_equal 'application/pdf', @response.media_type
   end
 
+  def test_index_pdf_with_query_grouped_by_full_width_text_custom_field
+    field = IssueCustomField.
+      create!(
+        :name => 'Long text', :field_format => 'text',
+        :full_width_layout => '1',
+        :tracker_ids => [1,3], :is_for_all => true
+      )
+    issue = Issue.find(1)
+    issue.custom_field_values = {field.id => 'This is a long text'}
+    issue.save!
+
+    get(
+      :index,
+      :params => {
+        :set_filter => 1,
+        :c => ['subject', 'description', "cf_#{field.id}"],
+        :format => 'pdf'
+      }
+    )
+    assert_response :success
+    assert_equal 'application/pdf', @response.media_type
+  end
+
   def test_index_pdf_filename_without_query
     get :index, :params => {:format => 'pdf'}
     assert_response :success