diff options
Diffstat (limited to 'activerecord/lib/active_record/attribute_set')
-rw-r--r-- | activerecord/lib/active_record/attribute_set/builder.rb | 21 |
1 files changed, 18 insertions, 3 deletions
diff --git a/activerecord/lib/active_record/attribute_set/builder.rb b/activerecord/lib/active_record/attribute_set/builder.rb index d4a787f2fe..0a62c68bfb 100644 --- a/activerecord/lib/active_record/attribute_set/builder.rb +++ b/activerecord/lib/active_record/attribute_set/builder.rb @@ -8,18 +8,33 @@ module ActiveRecord end def build_from_database(values = {}, additional_types = {}) - attributes = build_attributes_from_values(values, additional_types) + build_from_database_pairs(values.keys, values.values, additional_types) + end + + def build_from_database_pairs(columns, values, additional_types) + attributes = build_attributes_from_values(columns, values, additional_types) add_uninitialized_attributes(attributes) AttributeSet.new(attributes) end private - def build_attributes_from_values(values, additional_types) - values.each_with_object({}) do |(name, value), hash| + def build_attributes_from_values(columns, values, additional_types) + # We are performing manual iteration here as this method is a performance + # hotspot + hash = {} + index = 0 + length = columns.length + + while index < length + name = columns[index] + value = values[index] type = additional_types.fetch(name, types[name]) hash[name] = Attribute.from_database(name, value, type) + index += 1 end + + hash end def add_uninitialized_attributes(attributes) |