Merge pull request #17919 from mrgilman/stop-supporting-nested-arrays

Remove deprecated behavior allowing nested arrays as query values

activerecord/CHANGELOG.md

+*   Remove deprecated behavior allowing nested arrays to be passed as query
+    values.
+
+    *Melanie Gilman*
+
 *   Deprecate passing a class as a value in a query. Users should pass strings
     instead.
 

activerecord/lib/active_record/relation/predicate_builder/array_handler.rb

@@ -7,16 +7,6 @@ def call(attribute, value)
         values = value.map { |x| x.is_a?(Base) ? x.id : x }
         nils, values = values.partition(&:nil?)
 
-        if values.any? { |val| val.is_a?(Array) }
-          ActiveSupport::Deprecation.warn(<<-MSG.squish)
-            Passing a nested array to Active Record finder methods is
-            deprecated and will be removed. Flatten your array before using
-            it for 'IN' conditions.
-          MSG
-
-          values = values.flatten
-        end
-
         return attribute.in([]) if values.empty? && nils.empty?
 
         ranges, values = values.partition { |v| v.is_a?(Range) }

activerecord/test/cases/finder_test.rb

@@ -546,30 +546,6 @@ def test_find_on_hash_conditions_with_array_of_ranges
     assert_equal [1,2,6,7,8], Comment.where(id: [1..2, 6..8]).to_a.map(&:id).sort
   end
 
-  def test_find_on_hash_conditions_with_nested_array_of_integers_and_ranges
-    assert_deprecated do
-      assert_equal [1,2,3,5,6,7,8,9], Comment.where(id: [[1..2], 3, [5], 6..8, 9]).to_a.map(&:id).sort
-    end
-  end
-
-  def test_find_on_hash_conditions_with_array_of_integers_and_arrays
-    assert_deprecated do
-      assert_equal [1,2,3,5,6,7,8,9], Comment.where(id: [[1, 2], 3, 5, [6, [7], 8], 9]).to_a.map(&:id).sort
-    end
-  end
-
-  def test_find_on_hash_conditions_with_nested_array_of_integers_and_ranges_and_nils
-    assert_deprecated do
-      assert_equal [1,3,4,5], Topic.where(parent_id: [[2..6], nil]).to_a.map(&:id).sort
-    end
-  end
-
-  def test_find_on_hash_conditions_with_nested_array_of_integers_and_ranges_and_more_nils
-    assert_deprecated do
-      assert_equal [], Topic.where(parent_id: [[7..10, nil, [nil]], [nil]]).to_a.map(&:id).sort
-    end
-  end
-
   def test_find_on_multiple_hash_conditions
     assert Topic.where(author_name: "David", title: "The First Topic", replies_count: 1, approved: false).find(1)
     assert_raise(ActiveRecord::RecordNotFound) { Topic.where(author_name: "David", title: "The First Topic", replies_count: 1, approved: true).find(1) }

activerecord/test/cases/relation/where_test.rb

@@ -181,12 +181,6 @@ def test_where_with_table_name_and_empty_array
       assert_equal 0, Post.where(:id => []).count
     end
 
-    def test_where_with_table_name_and_nested_empty_array
-      assert_deprecated do
-        assert_equal [], Post.where(:id => [[]]).to_a
-      end
-    end
-
     def test_where_with_empty_hash_and_no_foreign_key
       assert_equal 0, Edge.where(:sink => {}).count
     end