Fixed failed tests.

Author: stas

lib/jsonapi/active_model_error_serializer.rb

@@ -3,9 +3,6 @@
 module JSONAPI
   # [ActiveModel::Errors] serializer
   class ActiveModelErrorSerializer < ErrorSerializer
-    set_id :object_id
-    set_type :error
-
     attribute :status do
       '422'
     end

lib/jsonapi/error_serializer.rb

@@ -5,7 +5,6 @@ module JSONAPI
   class ErrorSerializer
     include JSONAPI::Serializer
 
-    set_id :object_id
     set_type :error
 
     # Object/Hash attribute helpers.
@@ -15,6 +14,12 @@ class ErrorSerializer
       end
     end
 
+    # Overwrite the ID extraction method, to skip validations
+    #
+    # @return [NilClass]
+    def self.id_from_record(_record, _params)
+    end
+
     # Remap the root key to `errors`
     #
     # @return [Hash]