From c80ca4c7803b4e8ed7f125ada9acc6b7c499af5f Mon Sep 17 00:00:00 2001
From: Thiago Pinto <tapgyn@gmail.com>
Date: Wed, 19 Mar 2014 21:13:03 -0400
Subject: ActiveRecord#touch should accept multiple attributes #14423

---
 activerecord/CHANGELOG.md                     | 12 ++++++++++++
 activerecord/lib/active_record/persistence.rb |  5 +++--
 activerecord/test/cases/timestamp_test.rb     | 12 ++++++++++++
 3 files changed, 27 insertions(+), 2 deletions(-)

diff --git a/activerecord/CHANGELOG.md b/activerecord/CHANGELOG.md
index f5b8a3145d..b6748eb24d 100644
--- a/activerecord/CHANGELOG.md
+++ b/activerecord/CHANGELOG.md
@@ -1,3 +1,15 @@
+*   `ActiveRecord#touch` should accept many attributes at once. Suggested at #14423.
+
+    Example:
+
+        photo = Photo.last
+        photo.touch(:signed_at, :sealed_at)
+        photo.updated_at # was changed
+        photo.signed_at  # was changed
+        photo.sealed_at  # was changed
+        
+    *James Pinto*
+
 *   Reap connections that were checked out by now-dead threads, instead
     of waiting until they disconnect by themselves. Before this change,
     a suitably constructed series of short-lived threads could starve
diff --git a/activerecord/lib/active_record/persistence.rb b/activerecord/lib/active_record/persistence.rb
index d85fad1e13..eb45289b2e 100644
--- a/activerecord/lib/active_record/persistence.rb
+++ b/activerecord/lib/active_record/persistence.rb
@@ -412,6 +412,7 @@ module ActiveRecord
     #
     #   product.touch               # updates updated_at/on
     #   product.touch(:designed_at) # updates the designed_at attribute and updated_at/on
+    #   product.touch(:started_at, :ended_at) # updates started_at, ended_at and updated_at/on attributes
     #
     # If used along with +belongs_to+ then +touch+ will invoke +touch+ method on associated object.
     #
@@ -432,11 +433,11 @@ module ActiveRecord
     #   ball = Ball.new
     #   ball.touch(:updated_at)   # => raises ActiveRecordError
     #
-    def touch(name = nil)
+    def touch(*names)
       raise ActiveRecordError, "cannot touch on a new record object" unless persisted?
 
       attributes = timestamp_attributes_for_update_in_model
-      attributes << name if name
+      attributes.concat(names)
 
       unless attributes.empty?
         current_time = current_time_from_proper_timezone
diff --git a/activerecord/test/cases/timestamp_test.rb b/activerecord/test/cases/timestamp_test.rb
index 717e0e1866..5308fa8808 100644
--- a/activerecord/test/cases/timestamp_test.rb
+++ b/activerecord/test/cases/timestamp_test.rb
@@ -89,6 +89,18 @@ class TimestampTest < ActiveRecord::TestCase
     assert_in_delta Time.now, task.ending, 1
   end
 
+  def test_touching_many_attributes_updates_them
+    task = Task.first
+    previous_starting = task.starting
+    previous_ending = task.ending
+    task.touch(:starting, :ending)
+    
+    assert_not_equal previous_starting, task.starting
+    assert_not_equal previous_ending, task.ending
+    assert_in_delta Time.now, task.starting, 1
+    assert_in_delta Time.now, task.ending, 1
+  end
+
   def test_touching_a_record_without_timestamps_is_unexceptional
     assert_nothing_raised { Car.first.touch }
   end
-- 
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