Allows user to clear dates and text fields when bulk editing issues (#2199).

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@12192 e93f8b46-1217-0410-a6f0-8f06a7374b81

app/helpers/custom_fields_helper.rb

@@ -105,13 +105,24 @@ module CustomFieldsHelper
 
     tag_options = {:id => field_id, :class => "#{custom_field.field_format}_cf"}
 
+    unset_tag = ''
+    unless custom_field.is_required?
+      unset_tag = content_tag('label',
+        check_box_tag(field_name, '__none__', (value == '__none__'), :id => nil, :data => {:disables => "##{field_id}"}) + l(:button_clear),
+        :class => 'inline'
+      )
+    end
+
     field_format = Redmine::CustomFieldFormat.find_by_name(custom_field.field_format)
     case field_format.try(:edit_as)
       when "date"
         text_field_tag(field_name, value, tag_options.merge(:size => 10)) +
-        calendar_for(field_id)
+        calendar_for(field_id) +
+        unset_tag
       when "text"
-        text_area_tag(field_name, value, tag_options.merge(:rows => 3))
+        text_area_tag(field_name, value, tag_options.merge(:rows => 3)) +
+        '<br />'.html_safe +
+        unset_tag
       when "bool"
         select_tag(field_name, options_for_select([[l(:label_no_change_option), ''],
                                                    [l(:general_text_yes), '1'],
@@ -123,7 +134,8 @@ module CustomFieldsHelper
         options += custom_field.possible_values_options(projects)
         select_tag(field_name, options_for_select(options, value), tag_options.merge(:multiple => custom_field.multiple?))
       else
-        text_field_tag(field_name, value, tag_options)
+        text_field_tag(field_name, value, tag_options) +
+        unset_tag
     end
   end