1 files changed, 5 insertions, 2 deletions
diff --git a/addons/web/static/src/js/views/abstract_controller.js b/addons/web/static/src/js/views/abstract_controller.js
index fe4ba14de71..2f9957737ae 100644
--- a/addons/web/static/src/js/views/abstract_controller.js
+++ b/addons/web/static/src/js/views/abstract_controller.js
@@ -12,6 +12,7 @@ odoo.define('web.AbstractController', function (require) {
  * reading localstorage, ...) has to go through the controller.
  */
 
+var concurrency = require('web.concurrency');
 var ControlPanelMixin = require('web.ControlPanelMixin');
 var core = require('web.core');
 var AbstractAction = require('web.AbstractAction');
@@ -54,6 +55,8 @@ var AbstractController = AbstractAction.extend(ControlPanelMixin, {
         this.controllerID = params.controllerID;
         this.initialState = params.initialState;
 
+        // use a DropPrevious to correctly handle concurrent updates
+        this.dp = new concurrency.DropPrevious();
         // those arguments are temporary, they won't be necessary as soon as the
         // ControlPanel will be handled by the View
         this.displayName = params.displayName;
@@ -232,11 +235,11 @@ var AbstractController = AbstractAction.extend(ControlPanelMixin, {
         var self = this;
         var shouldReload = (options && 'reload' in options) ? options.reload : true;
         var def = shouldReload ? this.model.reload(this.handle, params) : $.when();
-        return def.then(function (handle) {
+        return this.dp.add(def).then(function (handle) {
             self.handle = handle || self.handle; // update handle if we reloaded
             var state = self.model.get(self.handle);
             var localState = self.renderer.getLocalState();
-            return self.renderer.updateState(state, params).then(function () {
+            return self.dp.add(self.renderer.updateState(state, params)).then(function () {
                 self.renderer.setLocalState(localState);
                 self._update(state);
             });