Add Firestore transaction example (flutter#442)

jusst-engineering · May 7, 2018 · c20c3a5 · c20c3a5
1 parent 4f7ec09
commit c20c3a5
Show file tree

Hide file tree

Showing 3 changed files with 17 additions and 1 deletion.
diff --git a/packages/cloud_firestore/CHANGELOG.md b/packages/cloud_firestore/CHANGELOG.md
@@ -1,3 +1,7 @@
+## 0.7.0+1
+
+* Add transactions example to README.
+
 ## 0.7.0
 
 * **Breaking change**. `snapshots` is now a method instead of a getter.

diff --git a/packages/cloud_firestore/README.md b/packages/cloud_firestore/README.md
@@ -62,6 +62,18 @@ class BookList extends StatelessWidget {
 }
 ```
 
+Running a transaction:
+
+```dart
+final DocumentReference postRef = Firestore.instance.document('posts/123');
+Firestore.instance.runTransaction((Transaction tx) async {
+  DocumentSnapshot postSnapshot = await tx.get(postRef);
+  if (postSnapshot.exists) {
+    tx.update(postRef, <String, dynamic>{'likesCount': postSnapshot.data['likesCount'] + 1});
+  }
+});
+```
+
 ## Getting Started
 
 See the `example` directory for a complete sample app using Cloud Firestore.
diff --git a/packages/cloud_firestore/pubspec.yaml b/packages/cloud_firestore/pubspec.yaml
@@ -3,7 +3,7 @@ description: Flutter plugin for Cloud Firestore, a cloud-hosted, noSQL database
   live synchronization and offline support on Android and iOS.
 author: Flutter Team <flutter-dev@googlegroups.com>
 homepage: https://github.com/flutter/plugins/tree/master/packages/cloud_firestore
-version: 0.7.0
+version: 0.7.0+1
 
 flutter:
   plugin: