Rails Lighthouse ticket #2946

quoted_date_with_zone_conversion.diff

From 3c7c6aa7399a58fee7c72f3f001f424bef91b8f8 Mon Sep 17 00:00:00 2001
From: Geoff Buesing <gbuesing@gmail.com>
Date: Thu, 23 Jul 2009 08:30:05 -0500
Subject: [PATCH] quoted_date: convert time objects to default_timezone

---
 .../connection_adapters/abstract/quoting.rb        |    7 +++-
 activerecord/test/cases/base_test.rb               |   35 ++++++++++++++++++++
 activerecord/test/cases/finder_test.rb             |   26 ++++++++++++++
 3 files changed, 67 insertions(+), 1 deletions(-)

diff --git a/activerecord/lib/active_record/connection_adapters/abstract/quoting.rb b/activerecord/lib/active_record/connection_adapters/abstract/quoting.rb
index 720fba2..8649f96 100644
--- a/activerecord/lib/active_record/connection_adapters/abstract/quoting.rb
+++ b/activerecord/lib/active_record/connection_adapters/abstract/quoting.rb
@@ -60,7 +60,12 @@ module ActiveRecord
       end
 
       def quoted_date(value)
-        value.to_s(:db)
+        if value.acts_like?(:time)
+          zone_conversion_method = ActiveRecord::Base.default_timezone == :utc ? :getutc : :getlocal
+          value.respond_to?(zone_conversion_method) ? value.send(zone_conversion_method) : value
+        else
+          value
+        end.to_s(:db)
       end
 
       def quoted_string_prefix
diff --git a/activerecord/test/cases/base_test.rb b/activerecord/test/cases/base_test.rb
index e47f898..128c16a 100755
--- a/activerecord/test/cases/base_test.rb
+++ b/activerecord/test/cases/base_test.rb
@@ -1489,6 +1489,33 @@ class BasicsTest < ActiveRecord::TestCase
     topic = Topic.create('author_name' => author_name)
     assert_equal author_name, Topic.find(topic.id).author_name
   end
+  
+  def test_date_quoting_converts_local_time_to_default_timezone_utc
+    with_env_tz 'America/New_York' do
+      begin
+        ActiveRecord::Base.default_timezone = :utc
+        time = Time.local(2000)
+        topic = Topic.create('written_on' => time)
+        saved_time = Topic.find(topic.id).written_on
+        assert_equal time, saved_time
+        assert_equal [0, 0, 0, 1, 1, 2000, 6, 1, false, "EST"], time.to_a
+        assert_equal [0, 0, 5, 1, 1, 2000, 6, 1, false, "UTC"], saved_time.to_a
+      ensure
+        ActiveRecord::Base.default_timezone = :local
+      end
+    end
+  end
+  
+  def test_date_quoting_converts_utc_time_to_default_timezone_local
+    with_env_tz 'America/New_York' do
+      time = Time.utc(2000)
+      topic = Topic.create('written_on' => time)
+      saved_time = Topic.find(topic.id).written_on
+      assert_equal time, saved_time
+      assert_equal [0, 0, 0, 1, 1, 2000, 6, 1, false, "UTC"], time.to_a
+      assert_equal [0, 0, 19, 31, 12, 1999, 5, 365, false, "EST"], saved_time.to_a
+    end
+  end
 
   if RUBY_VERSION < '1.9'
     def test_quote_chars
@@ -2120,4 +2147,12 @@ class BasicsTest < ActiveRecord::TestCase
   def test_dup
     assert !Minimalistic.new.freeze.dup.frozen?
   end
+  
+  protected
+    def with_env_tz(new_tz = 'US/Eastern')
+      old_tz, ENV['TZ'] = ENV['TZ'], new_tz
+      yield
+    ensure
+      old_tz ? ENV['TZ'] = old_tz : ENV.delete('TZ')
+    end
 end
diff --git a/activerecord/test/cases/finder_test.rb b/activerecord/test/cases/finder_test.rb
index d8f5695..e5e10e8 100644
--- a/activerecord/test/cases/finder_test.rb
+++ b/activerecord/test/cases/finder_test.rb
@@ -357,6 +357,25 @@ class FinderTest < ActiveRecord::TestCase
     assert_nil Company.find(:first, :conditions => { :name => "37signals!"})
     assert_kind_of Time, Topic.find(:first, :conditions => {:id => 1}).written_on
   end
+  
+  def test_condition_utc_time_interpolation_with_default_timezone_local
+    with_env_tz 'America/New_York' do
+      topic = Topic.first
+      assert_equal topic, Topic.find(:first, :conditions => {:written_on => topic.written_on.getutc})
+    end
+  end
+  
+  def test_condition_local_time_interpolation_with_default_timezone_utc
+    with_env_tz 'America/New_York' do
+      begin
+        ActiveRecord::Base.default_timezone = :utc
+        topic = Topic.first
+        assert_equal topic, Topic.find(:first, :conditions => {:written_on => topic.written_on.getlocal})
+      ensure
+        ActiveRecord::Base.default_timezone = :local
+      end
+    end
+  end
 
   def test_hash_condition_find_malformed
     assert_raise(ActiveRecord::StatementInvalid) {
@@ -1087,4 +1106,11 @@ class FinderTest < ActiveRecord::TestCase
         ActiveRecord::Base.send(:replace_bind_variables, statement, vars)
       end
     end
+    
+    def with_env_tz(new_tz = 'US/Eastern')
+      old_tz, ENV['TZ'] = ENV['TZ'], new_tz
+      yield
+    ensure
+      old_tz ? ENV['TZ'] = old_tz : ENV.delete('TZ')
+    end  
 end
-- 
1.6.1