Adds the date format for ambiguous dates (#19243).

git-svn-id: http://svn.redmine.org/redmine/trunk@14048 e93f8b46-1217-0410-a6f0-8f06a7374b81

app/helpers/settings_helper.rb

@@ -124,5 +124,16 @@ module SettingsHelper
     ]
 
     options.map {|label, value| [l(label), value.to_s]}
+  end
+
+	# Returns the options for the date_format setting
+  def date_format_setting_options(locale)
+    Setting::DATE_FORMATS.map do |f|
+      today = ::I18n.l(Date.today, :locale => locale, :format => f)
+      format = f.gsub('%', '').gsub(/[dmY]/) do
+        {'d' => 'dd', 'm' => 'mm', 'Y' => 'yyyy'}[$&]
+      end
+      ["#{today} (#{format})", f]
+    end
   end
 end

app/views/settings/_display.html.erb

@@ -11,7 +11,7 @@
 
 <p><%= setting_select :start_of_week, [[day_name(1),'1'], [day_name(6),'6'], [day_name(7),'7']], :blank => :label_language_based %></p>
 <% locale = User.current.language.blank? ? ::I18n.locale : User.current.language %>
-<p><%= setting_select :date_format, Setting::DATE_FORMATS.collect {|f| [::I18n.l(Date.today, :locale => locale, :format => f), f]}, :blank => :label_language_based %></p>
+<p><%= setting_select :date_format, date_format_setting_options(locale), :blank => :label_language_based %></p>
 
 <p><%= setting_select :time_format, Setting::TIME_FORMATS.collect {|f| [::I18n.l(Time.now, :locale => locale, :format => f), f]}, :blank => :label_language_based %></p>
 

test/unit/helpers/settings_helper_test.rb

@@ -0,0 +1,31 @@
+# Redmine - project management software
+# Copyright (C) 2006-2015  Jean-Philippe Lang
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License
+# as published by the Free Software Foundation; either version 2
+# of the License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+
+require File.expand_path('../../../test_helper', __FILE__)
+
+class SettingsHelperTest < ActionView::TestCase
+  include SettingsHelper
+  include Redmine::I18n
+  include ERB::Util
+
+  def test_date_format_setting_options_should_include_human_readable_format
+    Date.stubs(:today).returns(Date.parse("2015-07-14"))
+
+    options = date_format_setting_options('en')
+    assert_include ["2015-07-14 (yyyy-mm-dd)", "%Y-%m-%d"], options
+  end
+end