Merge Pull Request #18157

Conflicts:
	activerecord/CHANGELOG.md

3 files changed, 20 insertions, 1 deletions

diff --git a/activerecord/CHANGELOG.md b/activerecord/CHANGELOG.md
index 8878ba908d..0bcf6a14ec 100644
--- a/activerecord/CHANGELOG.md
+++ b/activerecord/CHANGELOG.md
@@ -1,3 +1,8 @@
+*   Don't raise when writing an attribute with an out-of-range datetime passed
+    by the user.
+
+    *Grey Baker*
+
 *   Replace deprecated `ActiveRecord::Tasks::DatabaseTasks#load_schema` with
     `ActiveRecord::Tasks::DatabaseTasks#load_schema_for`.
 
diff --git a/activerecord/lib/active_record/attribute_methods/time_zone_conversion.rb b/activerecord/lib/active_record/attribute_methods/time_zone_conversion.rb
index 87274dd4e1..777f7ab4d7 100644
--- a/activerecord/lib/active_record/attribute_methods/time_zone_conversion.rb
+++ b/activerecord/lib/active_record/attribute_methods/time_zone_conversion.rb
@@ -12,7 +12,11 @@ module ActiveRecord
           if value.is_a?(Array)
             value.map { |v| type_cast_from_user(v) }
           elsif value.respond_to?(:in_time_zone)
-            value.in_time_zone || super
+            begin
+              value.in_time_zone || super
+            rescue ArgumentError
+              nil
+            end
           end
         end
 
diff --git a/activerecord/test/cases/date_time_test.rb b/activerecord/test/cases/date_time_test.rb
index c0491bbee5..c2ec92c40d 100644
--- a/activerecord/test/cases/date_time_test.rb
+++ b/activerecord/test/cases/date_time_test.rb
@@ -3,6 +3,8 @@ require 'models/topic'
 require 'models/task'
 
 class DateTimeTest < ActiveRecord::TestCase
+  include InTimeZone
+
   def test_saves_both_date_and_time
     with_env_tz 'America/New_York' do
       with_timezone_config default: :utc do
@@ -29,6 +31,14 @@ class DateTimeTest < ActiveRecord::TestCase
     assert_nil task.ending
   end
 
+  def test_assign_bad_date_time_with_timezone
+    in_time_zone "Pacific Time (US & Canada)" do
+      task = Task.new
+      task.starting = '2014-07-01T24:59:59GMT'
+      assert_nil task.starting
+    end
+  end
+
   def test_assign_empty_date
     topic = Topic.new
     topic.last_read = ''