From 7ebd36d1c4f958ceaf10cf7899936caeb173ac50 Mon Sep 17 00:00:00 2001 From: Aaron Patterson Date: Tue, 16 Nov 2010 11:43:11 -0800 Subject: refactor to reduce method calls --- .../lib/active_record/relation/calculations.rb | 29 ++++++++++++++-------- 1 file changed, 19 insertions(+), 10 deletions(-) (limited to 'activerecord') diff --git a/activerecord/lib/active_record/relation/calculations.rb b/activerecord/lib/active_record/relation/calculations.rb index fe5c85d24a..c8adaddfca 100644 --- a/activerecord/lib/active_record/relation/calculations.rb +++ b/activerecord/lib/active_record/relation/calculations.rb @@ -212,13 +212,10 @@ module ActiveRecord association = @klass.reflect_on_association(group_attr.first.to_sym) associated = group_attr.size == 1 && association && association.macro == :belongs_to # only count belongs_to associations group_fields = Array(associated ? association.primary_key_name : group_attr) - group_aliases = [] - group_columns = {} - - group_fields.each do |field| - group_aliases << column_alias_for(field) - group_columns[column_alias_for(field)] = column_for(field) - end + group_aliases = group_fields.map { |field| column_alias_for(field) } + group_columns = group_aliases.zip(group_fields).map { |aliaz,field| + [aliaz, column_for(field)] + } group = @klass.connection.adapter_name == 'FrontBase' ? group_aliases : group_fields @@ -228,9 +225,19 @@ module ActiveRecord aggregate_alias = column_alias_for(operation, column_name) end + select_values = [ + operation_over_aggregate_column( + aggregate_column(column_name), + operation, + distinct).as(aggregate_alias) + ] + + select_values.concat group_fields.zip(group_aliases).map { |field,aliaz| + "#{field} AS #{aliaz}" + } + relation = except(:group).group(group.join(',')) - relation.select_values = [ operation_over_aggregate_column(aggregate_column(column_name), operation, distinct).as(aggregate_alias) ] - group_fields.each_index{ |i| relation.select_values << "#{group_fields[i]} AS #{group_aliases[i]}" } + relation.select_values = select_values calculated_data = @klass.connection.select_all(relation.to_sql) @@ -241,7 +248,9 @@ module ActiveRecord end ActiveSupport::OrderedHash[calculated_data.map do |row| - key = group_aliases.map{|group_alias| type_cast_calculated_value(row[group_alias], group_columns[group_alias])} + key = group_columns.map { |aliaz, column| + type_cast_calculated_value(row[aliaz], column) + } key = key.first if key.size == 1 key = key_records[key] if associated [key, type_cast_calculated_value(row[aggregate_alias], column_for(column_name), operation)] -- cgit v1.2.3