diff --git a/addons/web/static/src/js/view_form.js b/addons/web/static/src/js/view_form.js
index c784b169d12..81987dc9e15 100644
--- a/addons/web/static/src/js/view_form.js
+++ b/addons/web/static/src/js/view_form.js
@@ -1009,8 +1009,8 @@ instance.web.FormView = instance.web.View.extend(instance.web.form.FieldManagerM
         }
         return true;
     },
-    sidebar_context: function () {
-        return this.save().then(_.bind(function() {return this.get_fields_values();}, this));
+    sidebar_eval_context: function () {
+        return $.when(this.build_eval_context());
     },
     open_defaults_dialog: function () {
         var self = this;
diff --git a/addons/web/static/src/js/views.js b/addons/web/static/src/js/views.js
index 6fbbd3199ad..0478ba6abb0 100644
--- a/addons/web/static/src/js/views.js
+++ b/addons/web/static/src/js/views.js
@@ -1061,23 +1061,23 @@ instance.web.Sidebar = instance.web.Widget.extend({
     },
     on_item_action_clicked: function(item) {
         var self = this;
-        self.getParent().sidebar_context().done(function (context) {
+        self.getParent().sidebar_eval_context().done(function (sidebar_eval_context) {
             var ids = self.getParent().get_selected_ids();
             if (ids.length == 0) {
                 instance.web.dialog($("<div />").text(_t("You must choose at least one record.")), { title: _t("Warning"), modal: true });
                 return false;
             }
-            var additional_context = _.extend({
+            var active_ids_context = {
                 active_id: ids[0],
                 active_ids: ids,
                 active_model: self.getParent().dataset.model
-            }, context);
+            };
             self.rpc("/web/action/load", {
                 action_id: item.action.id,
-                context: additional_context
+                context: new instance.web.CompoundContext(sidebar_eval_context, active_ids_context),
             }).done(function(result) {
-                result.context = _.extend(result.context || {},
-                    additional_context);
+                console.log(result.context);
+                result.context = new instance.web.CompoundContext(result.context || {}, active_ids_context);
                 result.flags = result.flags || {};
                 result.flags.new_window = true;
                 self.do_action(result, {
@@ -1330,7 +1330,7 @@ instance.web.View = instance.web.Widget.extend({
     on_sidebar_export: function() {
         new instance.web.DataExport(this, this.dataset).open();
     },
-    sidebar_context: function () {
+    sidebar_eval_context: function () {
         return $.when();
     },
     /**