diff --git a/CHANGELOG.md b/CHANGELOG.md
index d16a8a41..b091fb68 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,7 @@
+# 2.0.0-rc.7
+* `AnonymousService` can override `readData`.
+* `Service.map` now overrides `readData`.
+
 # 2.0.0-rc.6
 * Make `redirect` and `download` methods asynchronous.
 
diff --git a/lib/src/core/anonymous_service.dart b/lib/src/core/anonymous_service.dart
index 2da73870..73324795 100644
--- a/lib/src/core/anonymous_service.dart
+++ b/lib/src/core/anonymous_service.dart
@@ -1,5 +1,6 @@
 import 'dart:async';
-
+import 'request_context.dart';
+import 'response_context.dart';
 import 'service.dart';
 
 /// An easy helper class to create one-off services without having to create an entire class.
@@ -17,8 +18,9 @@ class AnonymousService<Id, Data> extends Service<Id, Data> {
       FutureOr<Data> create(Data data, [Map<String, dynamic> params]),
       FutureOr<Data> modify(Id id, Data data, [Map<String, dynamic> params]),
       FutureOr<Data> update(Id id, Data data, [Map<String, dynamic> params]),
-      FutureOr<Data> remove(Id id, [Map<String, dynamic> params])})
-      : super() {
+      FutureOr<Data> remove(Id id, [Map<String, dynamic> params]),
+      FutureOr<Data> Function(RequestContext, ResponseContext) readData})
+      : super(readData: readData) {
     _index = index;
     _read = read;
     _create = create;
diff --git a/lib/src/core/service.dart b/lib/src/core/service.dart
index 0fcfc5a7..8b383023 100644
--- a/lib/src/core/service.dart
+++ b/lib/src/core/service.dart
@@ -160,8 +160,15 @@ class Service<Id, Data> extends Routable {
   /// using two converter functions.
   ///
   /// Handy utility for handling data in a type-safe manner.
-  Service<Id, U> map<U>(U Function(Data) encoder, Data Function(U) decoder) {
+  Service<Id, U> map<U>(U Function(Data) encoder, Data Function(U) decoder,
+      {FutureOr<U> Function(RequestContext, ResponseContext) readData}) {
+    readData ??= (req, res) async {
+      var inner = await this.readData(req, res);
+      return encoder(inner);
+    };
+
     return new AnonymousService<Id, U>(
+      readData: readData,
       index: ([params]) {
         return index(params).then((it) => it.map(encoder).toList());
       },
diff --git a/pubspec.yaml b/pubspec.yaml
index d2fca7fe..7cce6681 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -1,5 +1,5 @@
 name: angel_framework
-version: 2.0.0-rc.6
+version: 2.0.0-rc.7
 description: A high-powered HTTP server with dependency injection, routing and much more.
 author: Tobe O <thosakwe@gmail.com>
 homepage: https://github.com/angel-dart/angel_framework