From 5575bd7b22e8e11ba8e2fdac4a92aab931d4f9f9 Mon Sep 17 00:00:00 2001 From: Ryuta Kamizono Date: Mon, 22 Apr 2019 18:12:14 +0900 Subject: Avoid redundant `attribute_alias?` before `attribute_alias` MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit If we want to get alias resolved attribute finally, we can use `attribute_alias` directly. For that purpose, avoiding redundant `attribute_alias?` makes alias attribute access 40% faster. https://gist.github.com/kamipo/e427f080a27b46f50bc508fae3612a0e Before (2c0729d8): ``` Warming up -------------------------------------- user['id'] 102.668k i/100ms user['new_id'] 80.660k i/100ms user['name'] 99.368k i/100ms user['new_name'] 81.626k i/100ms Calculating ------------------------------------- user['id'] 1.431M (± 4.0%) i/s - 7.187M in 5.031985s user['new_id'] 1.042M (± 4.2%) i/s - 5.243M in 5.039858s user['name'] 1.406M (± 5.6%) i/s - 7.055M in 5.036743s user['new_name'] 1.074M (± 3.6%) i/s - 5.387M in 5.024152s ``` After (this change): ``` Warming up -------------------------------------- user['id'] 109.775k i/100ms user['new_id'] 103.303k i/100ms user['name'] 105.988k i/100ms user['new_name'] 99.618k i/100ms Calculating ------------------------------------- user['id'] 1.520M (± 6.7%) i/s - 7.574M in 5.011496s user['new_id'] 1.485M (± 6.2%) i/s - 7.438M in 5.036252s user['name'] 1.538M (± 5.4%) i/s - 7.737M in 5.049765s user['new_name'] 1.516M (± 4.6%) i/s - 7.571M in 5.007293s ``` --- activerecord/lib/active_record/attribute_methods/dirty.rb | 8 ++------ activerecord/lib/active_record/attribute_methods/read.rb | 4 +--- activerecord/lib/active_record/attribute_methods/write.rb | 4 +--- 3 files changed, 4 insertions(+), 12 deletions(-) (limited to 'activerecord/lib/active_record/attribute_methods') diff --git a/activerecord/lib/active_record/attribute_methods/dirty.rb b/activerecord/lib/active_record/attribute_methods/dirty.rb index 444568562b..a43ebdf60d 100644 --- a/activerecord/lib/active_record/attribute_methods/dirty.rb +++ b/activerecord/lib/active_record/attribute_methods/dirty.rb @@ -167,12 +167,8 @@ module ActiveRecord end def write_attribute_without_type_cast(attr_name, value) - name = attr_name.to_s - if self.class.attribute_alias?(name) - name = self.class.attribute_alias(name) - end - result = super(name, value) - clear_attribute_change(name) + result = super + clear_attribute_change(attr_name) result end diff --git a/activerecord/lib/active_record/attribute_methods/read.rb b/activerecord/lib/active_record/attribute_methods/read.rb index c787fb6a94..0562327a9a 100644 --- a/activerecord/lib/active_record/attribute_methods/read.rb +++ b/activerecord/lib/active_record/attribute_methods/read.rb @@ -27,9 +27,7 @@ module ActiveRecord # to a date object, like Date.new(2004, 12, 12)). def read_attribute(attr_name, &block) name = attr_name.to_s - if self.class.attribute_alias?(name) - name = self.class.attribute_alias(name) - end + name = self.class.attribute_aliases[name] || name name = @primary_key if name == "id" && @primary_key _read_attribute(name, &block) diff --git a/activerecord/lib/active_record/attribute_methods/write.rb b/activerecord/lib/active_record/attribute_methods/write.rb index 6a54bd2fc2..1c63b553d0 100644 --- a/activerecord/lib/active_record/attribute_methods/write.rb +++ b/activerecord/lib/active_record/attribute_methods/write.rb @@ -31,9 +31,7 @@ module ActiveRecord # turned into +nil+. def write_attribute(attr_name, value) name = attr_name.to_s - if self.class.attribute_alias?(name) - name = self.class.attribute_alias(name) - end + name = self.class.attribute_aliases[name] || name name = @primary_key if name == "id" && @primary_key _write_attribute(name, value) -- cgit v1.2.3