Fix plotly#66

CHANGELOG.md

@@ -2,6 +2,10 @@
 All notable changes to this project will be documented in this file.
 This project adheres to [Semantic Versioning](http://semver.org/).
 
+## [0.13.3] - 2018-08-13
+### Fixed
+- Fix a bug in the ON_PROP_CHANGE callback where history was not correctly set when acting on more than one component. In particular, the 'undo' button should now work as expected. Fixes [#66](https://github.com/plotly/dash-renderer/issues/66).
+
 ## [0.13.2] - 2018-07-24
 ### Fixed
 - Attempting to render a `Boolean` value to the page no longer crashes the app.

dash_renderer/version.py

@@ -1 +1 @@
-__version__ = '0.13.1'
+__version__ = '0.13.2'

src/reducers/reducer.js

@@ -49,9 +49,7 @@ function getInputHistoryState(itempath, props, state) {
 function recordHistory(reducer) {
     return function (state, action) {
         // Record initial state
-        if (action.type === 'ON_PROP_CHANGE' &&
-            R.isEmpty(state.history.present)
-        ) {
+        if (action.type === 'ON_PROP_CHANGE') {
             const {itempath, props} = action.payload;
             const historyEntry = getInputHistoryState(itempath, props, state);
             if (historyEntry && !R.isEmpty(historyEntry.props)) {
@@ -75,7 +73,7 @@ function recordHistory(reducer) {
                 nextState.history = {
                     past: [
                         ...nextState.history.past,
-                        nextState.history.present
+                        state.history.present
                     ],
                     present: historyEntry,
                     future: []