3 files changed, 29 insertions, 0 deletions
diff --git a/addons/web/static/src/js/framework/pyeval.js b/addons/web/static/src/js/framework/pyeval.js
index ce25e7af534..2b553d37e0f 100644
--- a/addons/web/static/src/js/framework/pyeval.js
+++ b/addons/web/static/src/js/framework/pyeval.js
@@ -757,6 +757,12 @@ var wrapping_dict = py.type('wrapping_dict', null, {
     __getattr__: function (key) {
         return this.__getitem__(py.str.fromJSON(key));
     },
+    __len__: function () {
+        return Object.keys(this._store).length
+    },
+    __nonzero__: function () {
+        return py.PY_size(this) > 0 ? py.True : py.False;
+    },
     get: function () {
         var args = py.PY_parseArgs(arguments, ['k', ['d', py.None]]);
 
@@ -780,6 +786,12 @@ var wrapping_list = py.type('wrapping_list', null, {
     __getitem__: function (index) {
         return wrap(this._store[index.toJSON()]);
     },
+    __len__: function () {
+        return this._store.length;
+    },
+    __nonzero__: function () {
+        return py.PY_size(this) > 0 ? py.True : py.False;
+    },
     fromJSON: function (ar) {
         var instance = py.PY_call(wrapping_list);
         instance._store = ar;
diff --git a/addons/web/static/src/js/views/form_view.js b/addons/web/static/src/js/views/form_view.js
index 8b5905897b5..3f03c288841 100644
--- a/addons/web/static/src/js/views/form_view.js
+++ b/addons/web/static/src/js/views/form_view.js
@@ -74,6 +74,7 @@ var FormView = View.extend(common.FieldManagerMixin, {
             "footer_to_buttons": false,
         });
         this.is_initialized = $.Deferred();
+        this.record_loaded = $.Deferred();
         this.mutating_mutex = new utils.Mutex();
         this.save_list = [];
         this.render_value_defs = [];
@@ -361,6 +362,7 @@ var FormView = View.extend(common.FieldManagerMixin, {
         this._actualize_mode();
         this.set({ 'title' : record.id ? record.display_name : _t("New") });
 
+        this.record_loaded = $.Deferred();
         _(this.fields).each(function (field, f) {
             field._dirty_flag = false;
             field._inhibit_on_change_flag = true;
@@ -376,6 +378,7 @@ var FormView = View.extend(common.FieldManagerMixin, {
             self.on_form_changed();
             self.rendering_engine.init_fields();
             self.is_initialized.resolve();
+            self.record_loaded.resolve();
             self.do_update_pager(record.id === null || record.id === undefined);
             if (self.sidebar) {
                self.sidebar.do_attachement_update(self.dataset, self.datarecord.id);
diff --git a/addons/web/static/src/js/views/form_widgets.js b/addons/web/static/src/js/views/form_widgets.js
index fbc8a28e375..92782b5923a 100644
--- a/addons/web/static/src/js/views/form_widgets.js
+++ b/addons/web/static/src/js/views/form_widgets.js
@@ -436,6 +436,20 @@ var FieldCharDomain = common.AbstractField.extend(common.ReinitializeFieldMixin,
         this._super.apply(this, arguments);
         this.debug = session.debug;
     },
+    start: function() {
+        var self = this;
+        var tmp = this._super();
+        if (this.options.model_field){
+            this.field_manager.fields[this.options.model_field].on("change:value", this, function(){
+                if (self.view && self.view.record_loaded.state == "resolved" && self.view.onchanges_mutex){
+                    self.view.onchanges_mutex.def.then(function(){
+                        self.render_value();
+                    });
+                }
+            });
+        }
+        return tmp;
+    },
     render_value: function() {
         var self = this;