1 files changed, 21 insertions, 3 deletions
diff --git a/activerecord/lib/active_record/connection_adapters/abstract/quoting.rb b/activerecord/lib/active_record/connection_adapters/abstract/quoting.rb
index 437e7c6510..e5a24b2aca 100644
--- a/activerecord/lib/active_record/connection_adapters/abstract/quoting.rb
+++ b/activerecord/lib/active_record/connection_adapters/abstract/quoting.rb
@@ -7,8 +7,13 @@ module ActiveRecord
       # Quotes the column value to help prevent
       # {SQL injection attacks}[http://en.wikipedia.org/wiki/SQL_injection].
       def quote(value)
-        # records are quoted as their primary key
-        return value.quoted_id if value.respond_to?(:quoted_id)
+        value = id_value_for_database(value) if value.is_a?(Base)
+
+        if value.respond_to?(:quoted_id)
+          ActiveSupport::Deprecation.warn \
+            "Using #quoted_id is deprecated and will be removed in Rails 5.2."
+          return value.quoted_id
+        end
 
         _quote(value)
       end
@@ -17,6 +22,8 @@ module ActiveRecord
       # SQLite does not understand dates, so this method will convert a Date
       # to a String.
       def type_cast(value, column = nil)
+        value = id_value_for_database(value) if value.is_a?(Base)
+
         if value.respond_to?(:quoted_id) && value.respond_to?(:id)
           return value.id
         end
@@ -141,19 +148,29 @@ module ActiveRecord
         quoted_date(value).sub(/\A2000-01-01 /, "")
       end
 
+      def quoted_binary(value) # :nodoc:
+        "'#{quote_string(value.to_s)}'"
+      end
+
       private
 
         def type_casted_binds(binds)
           binds.map { |attr| type_cast(attr.value_for_database) }
         end
 
+        def id_value_for_database(value)
+          if primary_key = value.class.primary_key
+            value.instance_variable_get(:@attributes)[primary_key].value_for_database
+          end
+        end
+
         def types_which_need_no_typecasting
           [nil, Numeric, String]
         end
 
         def _quote(value)
           case value
-          when String, ActiveSupport::Multibyte::Chars, Type::Binary::Data
+          when String, ActiveSupport::Multibyte::Chars
             "'#{quote_string(value.to_s)}'"
           when true       then quoted_true
           when false      then quoted_false
@@ -161,6 +178,7 @@ module ActiveRecord
           # BigDecimals need to be put in a non-normalized form and quoted.
           when BigDecimal then value.to_s("F")
           when Numeric, ActiveSupport::Duration then value.to_s
+          when Type::Binary::Data then quoted_binary(value)
           when Type::Time::Value then "'#{quoted_time(value)}'"
           when Date, Time then "'#{quoted_date(value)}'"
           when Symbol     then "'#{quote_string(value.to_s)}'"