diff --git a/addons/web/static/src/js/chrome.js b/addons/web/static/src/js/chrome.js
index 520345e1e23..edc703cf403 100644
--- a/addons/web/static/src/js/chrome.js
+++ b/addons/web/static/src/js/chrome.js
@@ -36,7 +36,7 @@ openerp.web.Notification =  openerp.web.Widget.extend(/** @lends openerp.web.Not
 
 });
 
-openerp.web.Dialog = openerp.web.OldWidget.extend(/** @lends openerp.web.Dialog# */{
+openerp.web.Dialog = openerp.web.Widget.extend(/** @lends openerp.web.Dialog# */{
     dialog_title: "",
     identifier_prefix: 'dialog',
     /**
@@ -46,9 +46,12 @@ openerp.web.Dialog = openerp.web.OldWidget.extend(/** @lends openerp.web.Dialog#
      * @param parent
      * @param options
      */
-    init: function (parent, options) {
+    init: function (parent, options, content) {
         var self = this;
         this._super(parent);
+        if (content) {
+            this.$element = content instanceof $ ? content : $(content);
+        }
         this.dialog_options = {
             modal: true,
             destroy_on_close: true,
@@ -72,6 +75,11 @@ openerp.web.Dialog = openerp.web.OldWidget.extend(/** @lends openerp.web.Dialog#
         if (options) {
             _.extend(this.dialog_options, options);
         }
+        if (this.dialog_options.autoOpen) {
+            this.open();
+        } else {
+            this.$element.dialog(this.get_options());
+        }
     },
     get_options: function(options) {
         var self = this,
@@ -103,11 +111,6 @@ openerp.web.Dialog = openerp.web.OldWidget.extend(/** @lends openerp.web.Dialog#
             return parseInt(val, 10);
         }
     },
-    start: function () {
-        this.$element.dialog(this.dialog_options);
-        this._super();
-        return this;
-    },
     open: function(options) {
         // TODO fme: bind window on resize
         if (this.template) {
@@ -195,13 +198,12 @@ openerp.web.CrashManager = openerp.web.CallbackEnabled.extend({
         }
         var dialog = new openerp.web.Dialog(this, {
             title: "OpenERP " + _.str.capitalize(this.error.type),
-            autoOpen: true,
             width: '80%',
             height: '50%',
             min_width: '800px',
             min_height: '600px',
             buttons: buttons
-        }).start();
+        }).open();
         dialog.$element.html(QWeb.render('CrashManagerError', {session: openerp.connection, error: error}));
     },
 });
@@ -782,8 +784,7 @@ openerp.web.Header =  openerp.web.Widget.extend(/** @lends openerp.web.Header# *
                     }
                 }
             ]
-        });
-       this.dialog.start().open();
+        }).open();
        action_manager.appendTo(this.dialog);
        action_manager.render(this.dialog);
     },
@@ -793,8 +794,7 @@ openerp.web.Header =  openerp.web.Widget.extend(/** @lends openerp.web.Header# *
         this.dialog = new openerp.web.Dialog(this, {
             title: _t("Change Password"),
             width : 'auto'
-        });
-        this.dialog.start().open();
+        }).open();
         this.dialog.$element.html(QWeb.render("Change_Pwd", self));
         this.dialog.$element.find("form[name=change_password_form]").validate({
             submitHandler: function (form) {
diff --git a/addons/web/static/src/js/data.js b/addons/web/static/src/js/data.js
index 3b444dffc78..663e596acc5 100644
--- a/addons/web/static/src/js/data.js
+++ b/addons/web/static/src/js/data.js
@@ -293,16 +293,16 @@ openerp.web.DataSet =  openerp.web.Widget.extend( /** @lends openerp.web.DataSet
      *
      * @param {Array} ids identifiers of the records to read
      * @param {Array} fields fields to read and return, by default all fields are returned
-     * @param {Function} callback function called with read result
      * @returns {$.Deferred}
      */
-    read_ids: function (ids, fields, callback) {
+    read_ids: function (ids, fields, options) {
+        var options = options || {};
         return this.rpc('/web/dataset/get', {
             model: this.model,
             ids: ids,
             fields: fields,
-            context: this.get_context()
-        }, callback);
+            context: this.get_context(options.context)
+        });
     },
     /**
      * Read a slice of the records represented by this DataSet, based on its
@@ -312,22 +312,20 @@ openerp.web.DataSet =  openerp.web.Widget.extend( /** @lends openerp.web.DataSet
      * @params {Object} options
      * @param {Number} [options.offset=0] The index from which selected records should be returned
      * @param {Number} [options.limit=null] The maximum number of records to return
-     * @param {Function} callback function called with read_slice result
      * @returns {$.Deferred}
      */
-    read_slice: function (fields, options, callback) { 
-        return null; 
+    read_slice: function (fields, options) {
+        return null;
     },
     /**
      * Reads the current dataset record (from its index)
      *
      * @params {Array} [fields] fields to read and return, by default all fields are returned
      * @param {Object} [options.context] context data to add to the request payload, on top of the DataSet's own context
-     * @params {Function} callback function called with read_index result
      * @returns {$.Deferred}
      */
-    read_index: function (fields, options, callback) {
-        var def = $.Deferred().then(callback);
+    read_index: function (fields, options) {
+        var def = $.Deferred();
         if (_.isEmpty(this.ids)) {
             def.reject();
         } else {
@@ -344,15 +342,16 @@ openerp.web.DataSet =  openerp.web.Widget.extend( /** @lends openerp.web.DataSet
      * Reads default values for the current model
      *
      * @param {Array} [fields] fields to get default values for, by default all defaults are read
-     * @param {Function} callback function called with default_get result
+     * @param {Object} [options.context] context data to add to the request payload, on top of the DataSet's own context
      * @returns {$.Deferred}
      */
-    default_get: function(fields, callback) {
+    default_get: function(fields, options) {
+        var options = options || {};
         return this.rpc('/web/dataset/default_get', {
             model: this.model,
             fields: fields,
-            context: this.get_context()
-        }, callback);
+            context: this.get_context(options.context)
+        });
     },
     /**
      * Creates a new record in db
@@ -504,14 +503,14 @@ openerp.web.DataSetStatic =  openerp.web.DataSet.extend({
         // all local records
         this.ids = ids || [];
     },
-    read_slice: function (fields, options, callback) {
+    read_slice: function (fields, options) {
         // TODO remove fields from options
         var self = this,
             offset = options.offset || 0,
             limit = options.limit || false,
             fields = fields || false;
         var end_pos = limit && limit !== -1 ? offset + limit : this.ids.length;
-        return this.read_ids(this.ids.slice(offset, end_pos), fields, callback);
+        return this.read_ids(this.ids.slice(offset, end_pos), fields);
     },
     set_ids: function (ids) {
         this.ids = ids;
@@ -558,10 +557,9 @@ openerp.web.DataSetSearch =  openerp.web.DataSet.extend(/** @lends openerp.web.D
      * @param {Array} [options.domain] domain data to add to the request payload, ANDed with the dataset's domain
      * @param {Number} [options.offset=0] The index from which selected records should be returned
      * @param {Number} [options.limit=null] The maximum number of records to return
-     * @param {Function} callback function called with read_slice result
      * @returns {$.Deferred}
      */
-    read_slice: function (fields, options, callback) {
+    read_slice: function (fields, options) {
         var self = this;
         var options = options || {};
         var offset = options.offset || 0;
@@ -577,7 +575,7 @@ openerp.web.DataSetSearch =  openerp.web.DataSet.extend(/** @lends openerp.web.D
             self.ids = result.ids;
             self.offset = offset;
             return result.records;
-        }).then(callback);
+        });
     },
     get_domain: function (other_domain) {
         if (other_domain) {
@@ -631,8 +629,8 @@ openerp.web.BufferedDataSet = openerp.web.DataSetStatic.extend({
         this.reset_ids([]);
         this.last_default_get = {};
     },
-    default_get: function(fields, callback) {
-        return this._super(fields).then(this.on_default_get).then(callback);
+    default_get: function(fields, options) {
+        return this._super(fields, options).then(this.on_default_get);
     },
     on_default_get: function(res) {
         this.last_default_get = res;
@@ -700,7 +698,7 @@ openerp.web.BufferedDataSet = openerp.web.DataSetStatic.extend({
         this.delete_all = false;
     },
     on_change: function() {},
-    read_ids: function (ids, fields, callback) {
+    read_ids: function (ids, fields, options) {
         var self = this;
         var to_get = [];
         _.each(ids, function(id) {
@@ -714,7 +712,7 @@ openerp.web.BufferedDataSet = openerp.web.DataSetStatic.extend({
                     to_get.push(id);
             }
         });
-        var completion = $.Deferred().then(callback);
+        var completion = $.Deferred();
         var return_records = function() {
             var records = _.map(ids, function(id) {
                 return _.extend({}, _.detect(self.cache, function(c) {return c.id === id;}).values, {"id": id});
@@ -727,7 +725,7 @@ openerp.web.BufferedDataSet = openerp.web.DataSetStatic.extend({
             completion.resolve(records);
         };
         if(to_get.length > 0) {
-            var rpc_promise = this._super(to_get, fields, function(records) {
+            var rpc_promise = this._super(to_get, fields, options).then(function(records) {
                 _.each(records, function(record, index) {
                     var id = to_get[index];
                     var cached = _.detect(self.cache, function(x) {return x.id === id;});
@@ -776,8 +774,8 @@ openerp.web.ProxyDataSet = openerp.web.DataSetSearch.extend({
             return this._super.apply(this, arguments);
         }
     },
-    default_get: function(fields, callback) {
-        return this._super(fields, callback).then(this.on_default_get);
+    default_get: function(fields, options) {
+        return this._super(fields, options).then(this.on_default_get);
     },
     on_default_get: function(result) {},
     create: function(data, callback, error_callback) {
diff --git a/addons/web/static/src/js/data_export.js b/addons/web/static/src/js/data_export.js
index c6fe96432ea..1382bf841de 100644
--- a/addons/web/static/src/js/data_export.js
+++ b/addons/web/static/src/js/data_export.js
@@ -74,7 +74,7 @@ openerp.web.DataExport = openerp.web.Dialog.extend({
         }
         return this.exports.read_slice(['name'], {
             domain: [['resource', '=', this.dataset.model]]
-        }, function (export_list) {
+        }).then(function (export_list) {
             if (!export_list.length) {
                 return;
             }
diff --git a/addons/web/static/src/js/data_import.js b/addons/web/static/src/js/data_import.js
index 2b252454869..18870ca2157 100644
--- a/addons/web/static/src/js/data_import.js
+++ b/addons/web/static/src/js/data_import.js
@@ -83,7 +83,7 @@ openerp.web.DataImport = openerp.web.Dialog.extend({
             'fields_get', [], function (fields) {
                 self.graft_fields(fields);
                 self.ready.push(new openerp.web.DataSet(self, self.model)
-                        .default_get(_.pluck(self.fields, 'id'), function (fields) {
+                        .default_get(_.pluck(self.fields, 'id')).then(function (fields) {
                     _.each(fields, function(val, key) {
                         if (val) {
                             self.fields_with_defaults.push(key);
diff --git a/addons/web/static/src/js/view_editor.js b/addons/web/static/src/js/view_editor.js
index 3635b988318..bf920380ff9 100644
--- a/addons/web/static/src/js/view_editor.js
+++ b/addons/web/static/src/js/view_editor.js
@@ -47,7 +47,7 @@ openerp.web.ViewEditor =   openerp.web.Widget.extend({
                 {text: _t("Remove"), click: function() { self.do_delete_view(); }},
                 {text: _t("Close"), click: function() { self.view_edit_dialog.close(); }}
             ]
-        }).start().open();
+        }).open();
         this.main_view_id = this.parent.fields_view.view_id;
         this.action_manager = new openerp.web.ActionManager(this);
         this.action_manager.appendTo(this.view_edit_dialog);
@@ -92,8 +92,7 @@ openerp.web.ViewEditor =   openerp.web.Widget.extend({
                 }},
                 {text: _t("Cancel"), click: function () { self.create_view_dialog.close(); }}
             ]
-        });
-        this.create_view_dialog.start().open();
+        }).open();
         var view_widget = [{'name': 'view_name', 'string':'View Name', 'type': 'char', 'required': true, 'value' : this.model + '.custom_' + Math.round(Math.random() * 1000)},
                            {'name': 'view_type', 'string': 'View Type', 'type': 'selection', 'required': true, 'value': 'Form', 'selection': [['',''],['tree', 'Tree'],['form', 'Form'],['graph', 'Graph'],['calendar', 'Calender']]},
                            {'name': 'proirity', 'string': 'Priority', 'type': 'float', 'required': true, 'value':'16'}];
@@ -125,7 +124,7 @@ openerp.web.ViewEditor =   openerp.web.Widget.extend({
                 }
             });
             if (field_name) {
-                model_dataset.read_slice(['name','field_id'], {"domain": [['model','=',self.model]]}, function(records) {
+                model_dataset.read_slice(['name','field_id'], {"domain": [['model','=',self.model]]}).then(function(records) {
                     if (records) {view_string = records[0].name;}
                     var arch = _.str.sprintf("<?xml version='1.0'?>\n<%s string='%s'>\n\t<field name='%s'/>\n</%s>", values.view_type, view_string, field_name, values.view_type);
                     var vals = {'model': self.model, 'name': values.view_name, 'priority': values.priority, 'type': values.view_type, 'arch': arch};
@@ -228,12 +227,12 @@ openerp.web.ViewEditor =   openerp.web.Widget.extend({
     get_arch: function() {
         var self = this;
         var view_arch_list = [];
-        this.dataset.read_ids([parseInt(self.main_view_id)], ['arch', 'type'], function(arch) {
+        this.dataset.read_ids([parseInt(self.main_view_id)], ['arch', 'type']).then(function(arch) {
             if (arch.length) {
                 var arch_object = self.parse_xml(arch[0].arch, self.main_view_id);
                 self.main_view_type = arch[0].type == 'tree'? 'list': arch[0].type;
                 view_arch_list.push({"view_id": self.main_view_id, "arch": arch[0].arch});
-                self.dataset.read_slice([], {domain: [['inherit_id','=', parseInt(self.main_view_id)]]}, function(result) {
+                self.dataset.read_slice([], {domain: [['inherit_id','=', parseInt(self.main_view_id)]]}).then(function(result) {
                     _.each(result, function(res) {
                         view_arch_list.push({"view_id": res.id, "arch": res.arch});
                         self.inherit_view(arch_object, res);
@@ -382,7 +381,7 @@ openerp.web.ViewEditor =   openerp.web.Widget.extend({
                     self.edit_xml_dialog.close();
                 }}
             ]
-        }).start().open();
+        }).open();
         var no_property_att = [];
         _.each(_PROPERTIES, function(val, key) {
             if (! val.length) no_property_att.push(key);
@@ -769,8 +768,7 @@ openerp.web.ViewEditor =   openerp.web.Widget.extend({
                 }},
                 {text: _t("Cancel"), click: function () { self.edit_node_dialog.close(); }}
             ]
-        });
-        this.edit_node_dialog.start().open();
+        }).open();
         var _PROPERTIES_ATTRIBUTES = {
             'name' : {'name':'name', 'string': 'Name', 'type': 'char'},
             'string' : {'name':'string', 'string': 'String', 'type': 'char'},
@@ -896,7 +894,7 @@ openerp.web.ViewEditor =   openerp.web.Widget.extend({
                 }},
                 {text: _t("Cancel"), click: function() { self.add_node_dialog.close(); }}
             ]
-        }).start().open();
+        }).open();
         this.add_node_dialog.$element.append('<table id="rec_table"  style="width:420px" class="oe_forms"><tbody><tr></tbody></table>');
         var table_selector = self.add_node_dialog.$element.find('table[id=rec_table] tbody');
         _.each(render_list, function(node) {
@@ -916,7 +914,7 @@ openerp.web.ViewEditor =   openerp.web.Widget.extend({
         table_selector.find("td[id^=]").attr("width","100px");
         self.add_node_dialog.$element.find('#new_field').click(function() {
             model_data = new openerp.web.DataSetSearch(self,'ir.model', null, null);
-            model_data.read_slice([], {domain: [['model','=', self.model]]}, function(result) {
+            model_data.read_slice([], {domain: [['model','=', self.model]]}).then(function(result) {
                 self.render_new_field(result[0].id);
             });
         });
@@ -940,7 +938,7 @@ openerp.web.ViewEditor =   openerp.web.Widget.extend({
             controller.do_set_readonly.add_last(function(){
                 action_manager.stop();
                 new_fields_name = new openerp.web.DataSetSearch(self,'ir.model.fields', null, null);
-                new_fields_name.read_ids([controller.datarecord.id], ['name'], function(result) {
+                new_fields_name.read_ids([controller.datarecord.id], ['name']).then(function(result) {
                 self.add_node_dialog.$element.find('select[id=field_value]').append($("<option selected></option>").attr("value", result[0].name).text(result[0].name));
                     _.detect(self.add_widget,function(widget){
                         widget.name == "field_value"? widget.selection.push(result[0].name): false;
diff --git a/addons/web/static/src/js/view_form.js b/addons/web/static/src/js/view_form.js
index 2d0cf214135..a80011b4d0a 100644
--- a/addons/web/static/src/js/view_form.js
+++ b/addons/web/static/src/js/view_form.js
@@ -625,7 +625,7 @@ openerp.web.form.SidebarAttachments = openerp.web.Widget.extend({
                     ['res_model', '=', this.view.dataset.model],
                     ['res_id', '=', this.view.datarecord.id],
                     ['type', 'in', ['binary', 'url']]
-                ])).read_slice(['name', 'url', 'type'], {}, this.on_attachments_loaded);
+                ])).read_slice(['name', 'url', 'type'], {}).then(this.on_attachments_loaded);
         }
     },
     on_attachments_loaded: function(attachments) {
@@ -1698,9 +1698,8 @@ openerp.web.form.dialog = function(content, options) {
         height: 'auto',
         min_width: '800px'
     }, options || {});
-    options.autoOpen = true;
-    var dialog = new openerp.web.Dialog(null, options).open();
-    return dialog.$element.html(content);
+    var dialog = new openerp.web.Dialog(null, options, content).open();
+    return dialog.$element;
 };
 
 openerp.web.form.FieldMany2One = openerp.web.form.Field.extend({
diff --git a/addons/web/static/src/js/view_list.js b/addons/web/static/src/js/view_list.js
index 2615ea297d0..63f9dfd6909 100644
--- a/addons/web/static/src/js/view_list.js
+++ b/addons/web/static/src/js/view_list.js
@@ -1016,14 +1016,13 @@ openerp.web.ListView.List = openerp.web.Class.extend( /** @lends openerp.web.Lis
             [record.get('id')],
             _.pluck(_(this.columns).filter(function (r) {
                     return r.tag === 'field';
-                }), 'name'),
-            function (records) {
-                _(records[0]).each(function (value, key) {
-                    record.set(key, value, {silent: true});
-                });
-                record.trigger('change', record);
-            }
-        );
+                }), 'name')
+        ).then(function (records) {
+            _(records[0]).each(function (value, key) {
+                record.set(key, value, {silent: true});
+            });
+            record.trigger('change', record);
+        });
     },
     /**
      * Renders a list record to HTML
@@ -1303,7 +1302,7 @@ openerp.web.ListView.Groups = openerp.web.Class.extend( /** @lends openerp.web.L
         var fields = _.pluck(_.select(this.columns, function(x) {return x.tag == "field"}), 'name');
         var options = { offset: page * limit, limit: limit, context: {bin_size: true} };
         //TODO xmo: investigate why we need to put the setTimeout
-        $.async_when().then(function() {dataset.read_slice(fields, options , function (records) {
+        $.async_when().then(function() {dataset.read_slice(fields, options).then(function (records) {
             // FIXME: ignominious hacks, parents (aka form view) should not send two ListView#reload_content concurrently
             if (self.records.length) {
                 self.records.reset(null, {silent: true});
diff --git a/addons/web/static/src/js/view_tree.js b/addons/web/static/src/js/view_tree.js
index 528a31c7869..902b5a99526 100644
--- a/addons/web/static/src/js/view_tree.js
+++ b/addons/web/static/src/js/view_tree.js
@@ -86,7 +86,7 @@ openerp.web.TreeView = openerp.web.View.extend(/** @lends openerp.web.TreeView#
             'toolbar': has_toolbar
         }));
 
-        this.dataset.read_slice(this.fields_list(), {}, function (records) {
+        this.dataset.read_slice(this.fields_list()).then(function(records) {
             if (!has_toolbar) {
                 // WARNING: will do a second read on the same ids, but only on
                 //          first load so not very important
@@ -192,7 +192,7 @@ openerp.web.TreeView = openerp.web.View.extend(/** @lends openerp.web.TreeView#
     getdata: function (id, children_ids) {
         var self = this;
 
-        self.dataset.read_ids(children_ids, this.fields_list(), function (records) {
+        self.dataset.read_ids(children_ids, this.fields_list()).then(function(records) {
             _(records).each(function (record) {
                 self.records[record.id] = record;
             });
diff --git a/addons/web/static/src/js/views.js b/addons/web/static/src/js/views.js
index 18119650262..0d5e22ae632 100644
--- a/addons/web/static/src/js/views.js
+++ b/addons/web/static/src/js/views.js
@@ -137,7 +137,6 @@ session.web.ActionManager = session.web.Widget.extend({
                 this.dialog = new session.web.Dialog(this, { width: '80%' });
                 if(on_close)
                     this.dialog.on_close.add(on_close);
-                this.dialog.start();
             } else {
                 this.dialog_viewmanager.stop();
             }
@@ -519,7 +518,7 @@ session.web.ViewManagerAction = session.web.ViewManager.extend(/** @lends oepner
                 }
             });
             if (!(self.action.id in self.session.hidden_menutips)) {
-                Users.read_ids([this.session.uid], ['menu_tips'], function(users) {
+                Users.read_ids([this.session.uid], ['menu_tips']).then(function(users) {
                     var user = users[0];
                     if (!(user && user.id === self.session.uid)) {
                         return;
@@ -918,7 +917,7 @@ session.web.TranslateDialog = session.web.Dialog.extend({
         this.languages = null;
         this.languages_loaded = $.Deferred();
         (new session.web.DataSetSearch(this, 'res.lang', this.view.dataset.get_context(),
-            [['translatable', '=', '1']])).read_slice(['code', 'name'], { sort: 'id' }, this.on_languages_loaded);
+            [['translatable', '=', '1']])).read_slice(['code', 'name'], { sort: 'id' }).then(this.on_languages_loaded);
     },
     start: function() {
         var self = this;
diff --git a/addons/web_calendar/static/src/css/web_calendar.css b/addons/web_calendar/static/src/css/web_calendar.css
index 26828b8e25d..a5de6648f82 100644
--- a/addons/web_calendar/static/src/css/web_calendar.css
+++ b/addons/web_calendar/static/src/css/web_calendar.css
@@ -106,7 +106,6 @@
     float:right;
 }
 .openerp .dhx_cal_prev_button:hover, .openerp .dhx_cal_prev_button:active, .openerp .dhx_cal_today_button:hover, .openerp .dhx_cal_today_button:active, .openerp .dhx_cal_next_button:hover, .openerp .dhx_cal_next_button:active {
-
 }
 
 .openerp .dhx_mini_calendar .dhx_cal_prev_button, .openerp .dhx_mini_calendar .dhx_cal_next_button, .openerp .dhx_mini_calendar .dhx_cal_today_button {
diff --git a/addons/web_calendar/static/src/js/calendar.js b/addons/web_calendar/static/src/js/calendar.js
index c9b5ab8f597..d27ec7e454d 100644
--- a/addons/web_calendar/static/src/js/calendar.js
+++ b/addons/web_calendar/static/src/js/calendar.js
@@ -171,7 +171,7 @@ openerp.web_calendar.CalendarView = openerp.web.View.extend({
         }
     },
     reload_event: function(id) {
-        this.dataset.read_ids([id], _.keys(this.fields), this.on_events_loaded);
+        this.dataset.read_ids([id], _.keys(this.fields)).then(this.on_events_loaded);
     },
     get_color: function(key) {
         if (this.color_map[key]) {
@@ -392,7 +392,7 @@ openerp.web_calendar.CalendarView = openerp.web.View.extend({
                 offset: 0,
                 domain: self.get_range_domain(),
                 context: self.last_search[1]
-            }, function(events) {
+            }).then(function(events) {
                 self.dataset_events = events;
                 self.on_events_loaded(events);
             });
diff --git a/addons/web_dashboard/static/src/js/dashboard.js b/addons/web_dashboard/static/src/js/dashboard.js
index 2ac6c68cff5..ac5b15b5c5a 100644
--- a/addons/web_dashboard/static/src/js/dashboard.js
+++ b/addons/web_dashboard/static/src/js/dashboard.js
@@ -296,8 +296,10 @@ openerp.web_dashboard.ConfigOverview = openerp.web.View.extend({
                 '|', ['groups_id', '=', false],
                      ['groups_id', 'in', record['groups_id']]];
             return $.when(
-                self.dataset.read_slice(['state', 'action_id', 'category_id'],{
-                        domain: todos_filter }),
+                self.dataset.read_slice(
+                    ['state', 'action_id', 'category_id'],
+                    { domain: todos_filter }
+                ),
                 self.dataset.call('progress').pipe(
                         function (arg) { return arg; }, null))
         }, null).then(this.on_records_loaded);
@@ -373,8 +375,8 @@ openerp.web_dashboard.Widget = openerp.web.View.extend(/** @lends openerp.web_da
     },
     start: function () {
         this._super();
-        return new openerp.web.DataSet(this, 'res.widget').read_ids(
-                [this.widget_id], ['title'], this.on_widget_loaded);
+        var ds = new openerp.web.DataSet(this, 'res.widget');
+        return ds.read_ids([this.widget_id], ['title']).then(this.on_widget_loaded);
     },
     on_widget_loaded: function (widgets) {
         var widget = widgets[0];
@@ -403,7 +405,7 @@ openerp.web_dashboard.ApplicationTiles = openerp.web.Widget.extend({
         openerp.webclient.menu.do_hide_secondary();
         var domain = [['application','=',true], ['state','=','installed'], ['name', '!=', 'base']];
         var ds = new openerp.web.DataSetSearch(this, 'ir.module.module',{},domain);
-        ds.read_slice(['id'], {}, function(result) {
+        ds.read_slice(['id']).then(function(result) {
             if(result.length) {
                 self.on_installed_database();
             } else {
@@ -418,7 +420,7 @@ openerp.web_dashboard.ApplicationTiles = openerp.web.Widget.extend({
     on_installed_database: function() {
         var self = this;
         var ds = new openerp.web.DataSetSearch(this, 'ir.ui.menu', null, [['parent_id', '=', false]]);
-        var r = ds.read_slice( ['name', 'web_icon_data', 'web_icon_hover_data', 'module'], {}, function (applications) {
+        var r = ds.read_slice( ['name', 'web_icon_data', 'web_icon_hover_data', 'module']).then(function (applications) {
             //// Create a matrix of 3*x applications
             //var rows = [];
             //while (applications.length) {
diff --git a/addons/web_graph/static/src/js/graph.js b/addons/web_graph/static/src/js/graph.js
index 30a10eee73a..b7eed2dcdc3 100644
--- a/addons/web_graph/static/src/js/graph.js
+++ b/addons/web_graph/static/src/js/graph.js
@@ -422,7 +422,7 @@ openerp.web_graph.GraphView = openerp.web.View.extend({
             } else {
                 self.abscissa = self.first_field;
             }
-            return self.dataset.read_slice(self.list_fields(), {}, $.proxy(self, 'schedule_chart'));
+            return self.dataset.read_slice(self.list_fields()).then($.proxy(self, 'schedule_chart'));
         });
     },
 
diff --git a/addons/web_kanban/static/src/js/kanban.js b/addons/web_kanban/static/src/js/kanban.js
index 00a63f82e1d..5e5abfb292b 100644
--- a/addons/web_kanban/static/src/js/kanban.js
+++ b/addons/web_kanban/static/src/js/kanban.js
@@ -162,7 +162,7 @@ openerp.web_kanban.KanbanView = openerp.web.View.extend({
                 group_aggregates[value] = group.aggregates[key];
             });
             var dataset = new openerp.web.DataSetSearch(self, self.dataset.model, group.context, group.domain);
-            dataset.read_slice(self.fields_keys, {'domain': group.domain, 'context': group.context}, function(records) {
+            dataset.read_slice(self.fields_keys, {'domain': group.domain, 'context': group.context}).then(function(records) {
                 self.dataset.ids.push.apply(self.dataset.ids, dataset.ids);
                 groups_array[index] = new openerp.web_kanban.KanbanGroup(self, records, group_value, group_name, group_aggregates);
                 if (!remaining--) {
@@ -175,7 +175,7 @@ openerp.web_kanban.KanbanView = openerp.web.View.extend({
     do_process_dataset: function(dataset) {
         var self = this;
         this.do_clear_groups();
-        this.dataset.read_slice(this.fields_keys, {}, function(records) {
+        this.dataset.read_slice(this.fields_keys).then(function(records) {
             var groups = [];
             while (records.length) {
                 for (var i = 0; i < self.default_nr_columns; i++) {
@@ -491,7 +491,7 @@ openerp.web_kanban.KanbanRecord = openerp.web.Widget.extend({
     },
     do_reload: function() {
         var self = this;
-        this.view.dataset.read_ids([this.id], this.view.fields_keys, function(records) {
+        this.view.dataset.read_ids([this.id], this.view.fields_keys).then(function(records) {
             if (records.length) {
                 self.set_record(records[0]);
                 self.do_render();
diff --git a/addons/web_mobile/static/src/js/form_mobile.js b/addons/web_mobile/static/src/js/form_mobile.js
index 56754491c95..84eccd41dc5 100644
--- a/addons/web_mobile/static/src/js/form_mobile.js
+++ b/addons/web_mobile/static/src/js/form_mobile.js
@@ -27,7 +27,7 @@ openerp.web_mobile.FormView = openerp.web.Widget.extend({
         }
         this.dataset = new openerp.web.DataSetSearch(this, model, null, null);
         var context = new openerp.web.CompoundContext(this.dataset.get_context());
-        this.dataset.read_slice([],{}, function (result) {
+        this.dataset.read_slice([]).then(function (result) {
             for (var i = 0; i < result.length; i++) {
                 if (result[i].id == id) {
                     self.datarecord = result[i];
@@ -73,7 +73,7 @@ openerp.web_mobile.FormView = openerp.web.Widget.extend({
                 var list_ids = [];
                 var datasearch = new openerp.web.DataSetSearch(self, rel_field.relation, rel_field.context);
                 datasearch.domain=[['id', 'in', rel_ids]];
-                datasearch.read_slice(['name'], {context:rel_field.context, domain: datasearch.domain, limit:80}, function(listrec){
+                datasearch.read_slice(['name'], {context:rel_field.context, domain: datasearch.domain, limit:80}).then(function(listrec){
                     _.each(listrec, function(i) {
                         list_ids.push(i.id);
                     });
diff --git a/addons/web_mobile/static/src/js/list_mobile.js b/addons/web_mobile/static/src/js/list_mobile.js
index e6bbfb12f48..7c7b7b33c15 100644
--- a/addons/web_mobile/static/src/js/list_mobile.js
+++ b/addons/web_mobile/static/src/js/list_mobile.js
@@ -33,7 +33,7 @@ openerp.web_mobile.ListView = openerp.web.Widget.extend({
         var list_ids = [];
         var datasearch = new openerp.web.DataSetSearch(self, self.action.res_model,self.action.context);
         datasearch.domain = self.action.domain;
-        datasearch.read_slice(['name'], {context:datasearch.context, domain: datasearch.domain, limit:80}, function(listresult){
+        datasearch.read_slice(['name'], {context:datasearch.context, domain: datasearch.domain, limit:80}).then(function(listresult){
             _.each(listresult, function(i) {
                 list_ids.push(i.id);
             });
diff --git a/addons/web_process/static/src/js/process.js b/addons/web_process/static/src/js/process.js
index 8d4396ba403..52a3d5c7656 100644
--- a/addons/web_process/static/src/js/process.js
+++ b/addons/web_process/static/src/js/process.js
@@ -286,7 +286,7 @@ openerp.web_process = function (openerp) {
                         $(this).dialog('destroy');
                     }}
                 ]
-            }).start().open();
+            }).open();
 
             action_manager.appendTo(dialog.$element);
             action_manager.do_action({