Allow to disable description field in tracker setting (#25052).

Patch by Go MAEDA and Mischa The Evil.

git-svn-id: http://svn.redmine.org/redmine/trunk@16351 e93f8b46-1217-0410-a6f0-8f06a7374b81

app/models/tracker.rb

@@ -18,10 +18,10 @@
 class Tracker < ActiveRecord::Base
   include Redmine::SafeAttributes
 
-  CORE_FIELDS_UNDISABLABLE = %w(project_id tracker_id subject description priority_id is_private).freeze
+  CORE_FIELDS_UNDISABLABLE = %w(project_id tracker_id subject priority_id is_private).freeze
   # Fields that can be disabled
   # Other (future) fields should be appended, not inserted!
-  CORE_FIELDS = %w(assigned_to_id category_id fixed_version_id parent_issue_id start_date due_date estimated_hours done_ratio).freeze
+  CORE_FIELDS = %w(assigned_to_id category_id fixed_version_id parent_issue_id start_date due_date estimated_hours done_ratio description).freeze
   CORE_FIELDS_ALL = (CORE_FIELDS_UNDISABLABLE + CORE_FIELDS).freeze
 
   before_destroy :check_integrity

test/unit/issue_test.rb

@@ -810,7 +810,6 @@ class IssueTest < ActiveSupport::TestCase
     assert_include 'tracker_id', issue.safe_attribute_names
     assert_include 'status_id', issue.safe_attribute_names
     assert_include 'subject', issue.safe_attribute_names
-    assert_include 'description', issue.safe_attribute_names
     assert_include 'custom_field_values', issue.safe_attribute_names
     assert_include 'custom_fields', issue.safe_attribute_names
     assert_include 'lock_version', issue.safe_attribute_names