1 files changed, 0 insertions, 76 deletions
diff --git a/config/initializers/active_record_locking.rb b/config/initializers/active_record_locking.rb
deleted file mode 100644
index 1bd1a12e4b7..00000000000
--- a/config/initializers/active_record_locking.rb
+++ /dev/null
@@ -1,76 +0,0 @@
-# rubocop:disable Lint/RescueException
-
-# Remove this monkey patch when we move to Rails 5.1, because the bug has been fixed in https://github.com/rails/rails/pull/26050.
-if Rails.gem_version >= Gem::Version.new("5.1")
-  raise "Remove this monkey patch: #{__FILE__}"
-end
-
-module ActiveRecord
-  module Locking
-    module Optimistic
-      # We overwrite this method because we don't want to have default value
-      # for newly created records
-      def _create_record(attribute_names = self.attribute_names, *) # :nodoc:
-        super
-      end
-
-      def _update_record(attribute_names = self.attribute_names) #:nodoc:
-        return super unless locking_enabled?
-        return 0 if attribute_names.empty?
-
-        lock_col = self.class.locking_column
-        previous_lock_value = send(lock_col).to_i
-        increment_lock
-
-        attribute_names += [lock_col]
-        attribute_names.uniq!
-
-        begin
-          relation = self.class.unscoped
-
-          affected_rows = relation.where(
-            self.class.primary_key => id,
-            # Patched because when `lock_version` is read as `0`, it may actually be `NULL` in the DB.
-            lock_col => previous_lock_value == 0 ? [nil, 0] : previous_lock_value
-          ).update_all(
-            attributes_for_update(attribute_names).map do |name|
-              [name, _read_attribute(name)]
-            end.to_h
-          )
-
-          unless affected_rows == 1
-            raise ActiveRecord::StaleObjectError.new(self, "update")
-          end
-
-          affected_rows
-
-        # If something went wrong, revert the version.
-        rescue Exception
-          send(lock_col + '=', previous_lock_value)
-          raise
-        end
-      end
-
-      # This is patched because we need it to query `lock_version IS NULL`
-      # rather than `lock_version = 0` whenever lock_version is NULL.
-      def relation_for_destroy
-        return super unless locking_enabled?
-
-        column_name = self.class.locking_column
-        super.where(self.class.arel_table[column_name].eq(self[column_name]))
-      end
-    end
-
-    # This is patched because we want `lock_version` default to `NULL`
-    # rather than `0`
-    class LockingType
-      def deserialize(value)
-        super
-      end
-
-      def serialize(value)
-        super
-      end
-    end
-  end
-end