Fixed that displaying time entries with custom field column raises an error (#5037).

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@12041 e93f8b46-1217-0410-a6f0-8f06a7374b81

app/models/custom_field.rb

@@ -76,6 +76,10 @@ class CustomField < ActiveRecord::Base
 
   CUSTOM_FIELDS_NAMES = CUSTOM_FIELDS_TABS.collect{|v| v[:name]}
 
+  def visible_by?(project, user=User.current)
+    visible? || user.admin?
+  end
+
   def field_format=(arg)
     # cannot change format of a saved custom field
     super if new_record?

app/models/issue_custom_field.rb

@@ -25,7 +25,7 @@ class IssueCustomField < CustomField
   end
 
   def visible_by?(project, user=User.current)
-    visible? || user.admin? || (roles & user.roles_for_project(project)).present?
+    super || (roles & user.roles_for_project(project)).present?
   end
 
   def validate_custom_field