Remove deprecated support to passing arguments to #select when a block is provided.

activerecord/CHANGELOG.md

@@ -1,3 +1,7 @@
+*   Remove deprecated support to passing arguments to `#select` when a block is provided.
+
+    *Rafael Mendonça França*
+
 *   Remove deprecated support to query using commas on LIMIT.
 
     *Rafael Mendonça França*

activerecord/lib/active_record/relation/query_methods.rb

@@ -243,9 +243,7 @@ module ActiveRecord
     def select(*fields)
       if block_given?
         if fields.any?
-          ActiveSupport::Deprecation.warn(<<-WARNING.squish)
-            When select is called with a block, it ignores other arguments. This behavior is now deprecated and will result in an ArgumentError in Rails 5.1. You can safely remove the arguments to resolve the deprecation warning because they do not have any effect on the output of the call to the select method with a block.
-          WARNING
+          raise ArgumentError, "`select' with block doesn't take arguments."
         end
 
         return super()

activerecord/test/cases/associations/has_many_associations_test.rb

@@ -788,13 +788,6 @@ class HasManyAssociationsTest < ActiveRecord::TestCase
     assert_equal [1], posts(:welcome).comments.select { |c| c.id == 1 }.map(&:id)
   end
 
-  def test_select_with_block_and_specific_attributes
-    assert_deprecated do
-      comments = posts(:welcome).comments.select(:id, :body) { |c| c.id == 1 }
-      assert_equal [1], comments.map(&:id)
-    end
-  end
-
   def test_select_without_foreign_key
     assert_equal companies(:first_firm).accounts.first.credit_limit, companies(:first_firm).accounts.select(:credit_limit).first.credit_limit
   end