Merged r14944 (#21413).

git-svn-id: http://svn.redmine.org/redmine/branches/3.2-stable@14945 e93f8b46-1217-0410-a6f0-8f06a7374b81

app/models/custom_field.rb

@@ -153,6 +153,10 @@ class CustomField < ActiveRecord::Base
     format.query_filter_options(self, query)
   end
 
+  def totalable?
+    format.totalable_supported
+  end
+
   # Returns a ORDER BY clause that can used to sort customized
   # objects by their value of the custom field.
   # Returns nil if the custom field can not be used for sorting.

app/models/query.rb

@@ -80,7 +80,7 @@ class QueryCustomFieldColumn < QueryColumn
     self.name = "cf_#{custom_field.id}".to_sym
     self.sortable = custom_field.order_statement || false
     self.groupable = custom_field.group_statement || false
-    self.totalable = ['int', 'float'].include?(custom_field.field_format)
+    self.totalable = custom_field.totalable?
     @inline = true
     @cf = custom_field
   end
@@ -692,7 +692,7 @@ class Query < ActiveRecord::Base
     end
     if column.is_a?(QueryCustomFieldColumn)
       custom_field = column.custom_field
-      send "total_for_#{custom_field.field_format}_custom_field", custom_field, scope
+      send "total_for_custom_field", custom_field, scope
     else
       send "total_for_#{column.name}", scope
     end
@@ -710,21 +710,9 @@ class Query < ActiveRecord::Base
       group(group_by_statement)
   end
 
-  def total_for_float_custom_field(custom_field, scope)
-    total_for_custom_field(custom_field, scope) {|t| t.to_f.round(2)}
-  end
-
-  def total_for_int_custom_field(custom_field, scope)
-    total_for_custom_field(custom_field, scope) {|t| t.to_i}
-  end
-
   def total_for_custom_field(custom_field, scope, &block)
-    total = scope.joins(:custom_values).
-      where(:custom_values => {:custom_field_id => custom_field.id}).
-      where.not(:custom_values => {:value => ''}).
-      sum("CAST(#{CustomValue.table_name}.value AS decimal(30,3))")
-
-    total = map_total(total, &block) if block_given?
+    total = custom_field.format.total_for_scope(custom_field, scope)
+    total = map_total(total) {|t| custom_field.format.cast_total_value(custom_field, t)}
     total
   end