diff --git a/addons/web/static/src/js/data.js b/addons/web/static/src/js/data.js
index cb63079fe2c..38119c63d3a 100644
--- a/addons/web/static/src/js/data.js
+++ b/addons/web/static/src/js/data.js
@@ -525,7 +525,10 @@ openerp.web.DataSet =  openerp.web.OldWidget.extend( /** @lends openerp.web.Data
     },
     size: function () {
         return this.ids.length;
-    }
+    },
+    alter_ids: function(n_ids) {
+    	this.ids = n_ids;
+    },
 });
 openerp.web.DataSetStatic =  openerp.web.DataSet.extend({
     init: function(parent, model, context, ids) {
@@ -784,7 +787,11 @@ openerp.web.BufferedDataSet = openerp.web.DataSetStatic.extend({
             }
         }
         return this._super(method, args, callback, error_callback);
-    }
+    },
+    alter_ids: function(n_ids) {
+    	this._super(n_ids);
+        this.on_change();
+    },
 });
 openerp.web.BufferedDataSet.virtual_id_regex = /^one2many_v_id_.*$/;
 
diff --git a/addons/web/static/src/js/view_form.js b/addons/web/static/src/js/view_form.js
index 7b6ec9c6bd5..ff0ef5e5fea 100644
--- a/addons/web/static/src/js/view_form.js
+++ b/addons/web/static/src/js/view_form.js
@@ -565,10 +565,10 @@ openerp.web.FormView = openerp.web.View.extend( /** @lends openerp.web.FormView#
         } else {
             this.datarecord.id = r.result;
             if (!prepend_on_create) {
-                this.dataset.ids.push(this.datarecord.id);
+                this.dataset.alter_ids(this.dataset.ids.concat([this.datarecord.id]));
                 this.dataset.index = this.dataset.ids.length - 1;
             } else {
-                this.dataset.ids.unshift(this.datarecord.id);
+            	this.dataset.alter_ids([this.datarecord.id].concat(this.dataset.ids));
                 this.dataset.index = 0;
             }
             this.do_update_pager();