diff --git a/addons/base/static/src/js/data.js b/addons/base/static/src/js/data.js
index 244c057d544..2dac0bb5ae4 100644
--- a/addons/base/static/src/js/data.js
+++ b/addons/base/static/src/js/data.js
@@ -286,14 +286,16 @@ openerp.base.DataSet =  openerp.base.Widget.extend( /** @lends openerp.base.Data
      * Read a slice of the records represented by this DataSet, based on its
      * domain and context.
      *
+     * @param {Array} [fields] fields to read and return, by default all fields are returned
      * @params {Object} options
-     * @param {Array} [options.fields] fields to read and return, by default all fields are returned
      * @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 {$.Deferred}
      */
-    read_slice: function (options, callback) { return null; },
+    read_slice: function (fields, options, callback) { 
+        return null; 
+    },
     /**
      * Reads the current dataset record (from its index)
      *
@@ -478,11 +480,12 @@ openerp.base.DataSetStatic =  openerp.base.DataSet.extend({
         // all local records
         this.ids = ids || [];
     },
-    read_slice: function (options, callback) {
+    read_slice: function (fields, options, callback) {
+        // TODO remove fields from options
         var self = this,
             offset = options.offset || 0,
             limit = options.limit || false,
-            fields = options.fields || false;
+            fields = fields || false;
         var end_pos = limit && limit !== -1 ? offset + limit : undefined;
         return this.read_ids(this.ids.slice(offset, end_pos), fields, callback);
     },
@@ -532,12 +535,12 @@ openerp.base.DataSetSearch =  openerp.base.DataSet.extend({
      * @param {Function} callback function called with read_slice result
      * @returns {$.Deferred}
      */
-    read_slice: function (options, callback) {
+    read_slice: function (fields, options, callback) {
         var self = this;
         var offset = options.offset || 0;
         return this.rpc('/base/dataset/search_read', {
             model: this.model,
-            fields: options.fields || false,
+            fields: fields || false,
             domain: this.get_domain(options.domain),
             context: this.get_context(options.context),
             sort: this.sort(),
diff --git a/addons/base/static/src/js/form.js b/addons/base/static/src/js/form.js
index d3056e618bf..c85d1fd4cb2 100644
--- a/addons/base/static/src/js/form.js
+++ b/addons/base/static/src/js/form.js
@@ -458,9 +458,7 @@ openerp.base.form.SidebarAttachments = openerp.base.Widget.extend({
                     ['res_model', '=', this.view.dataset.model],
                     ['res_id', '=', this.view.datarecord.id],
                     ['type', 'in', ['binary', 'url']]
-                ])).read_slice(
-                    {fields: ['name', 'url', 'type']},
-                    this.on_attachments_loaded);
+                ])).read_slice(['name', 'url', 'type'], this.on_attachments_loaded);
         }
     },
     on_attachments_loaded: function(attachments) {
diff --git a/addons/base/static/src/js/list.js b/addons/base/static/src/js/list.js
index a0440221520..d715c3600be 100644
--- a/addons/base/static/src/js/list.js
+++ b/addons/base/static/src/js/list.js
@@ -476,7 +476,8 @@ openerp.base.ListView = openerp.base.View.extend( /** @lends openerp.base.ListVi
      */
     do_activate_record: function (index, id, dataset) {
         var self = this;
-        this.dataset.read_slice({
+        // TODO is it needed ?
+        this.dataset.read_slice([],{
                 context: dataset.get_context(),
                 domain: dataset.get_domain()
             }, function () {
@@ -1034,11 +1035,9 @@ openerp.base.ListView.Groups = openerp.base.Class.extend( /** @lends openerp.bas
                d = new $.Deferred(),
             page = this.datagroup.openable ? this.page : view.page;
 
-        dataset.read_slice({
-                fields: _.pluck(_.select(this.columns, function(x) {return x.tag == "field"}), 'name'),
-                offset: page * limit,
-                limit: limit
-            }, function (records) {
+        var fields = _.pluck(_.select(this.columns, function(x) {return x.tag == "field"}), 'name');
+        var options = { offset: page * limit, limit: limit };
+        dataset.read_slice(fields, options , function (records) {
                 if (!self.datagroup.openable) {
                     view.configure_pager(dataset);
                 } else {
diff --git a/addons/base/static/src/js/view_tree.js b/addons/base/static/src/js/view_tree.js
index 5c3c7457e1c..59544a998b3 100644
--- a/addons/base/static/src/js/view_tree.js
+++ b/addons/base/static/src/js/view_tree.js
@@ -72,7 +72,7 @@ openerp.base.TreeView = openerp.base.View.extend({
             'toolbar': has_toolbar
         }));
 
-        this.dataset.read_slice({fields: this.fields_list()}, function (records) {
+        this.dataset.read_slice(this.fields_list(), {}, function (records) {
             if (!has_toolbar) {
                 // WARNING: will do a second read on the same ids, but only on
                 //          first load so not very important
diff --git a/addons/base/static/src/js/views.js b/addons/base/static/src/js/views.js
index f21c6387d32..ad75268156f 100644
--- a/addons/base/static/src/js/views.js
+++ b/addons/base/static/src/js/views.js
@@ -17,6 +17,7 @@ openerp.base.ActionManager = openerp.base.Widget.extend({
         this.dialog = null;
         this.dialog_viewmanager = null;
         this.client_widget = null;
+        this.url = {}
     },
     render: function() {
         return "<div id='"+this.element_id+"'></div>";
@@ -35,6 +36,28 @@ openerp.base.ActionManager = openerp.base.Widget.extend({
             this.inner_viewmanager = null;
         }
     },
+    url_update: function(action) {
+        // this.url = {
+        //     "model": action.model,
+        //     "domain": action.domain,
+        // };
+        // action.res_model
+        // action.domain
+        // action.context
+        // after
+        // action.views
+        // action.res_id
+        // mode
+        // menu
+    },
+    url_stringify: function(action) {
+    },
+    url_parse: function(action) {
+    },
+    on_url_update: function(url) {
+    },
+    do_url_action: function(url) {
+    },
     do_action: function(action, on_close) {
         var type = action.type.replace(/\./g,'_');
         var popup = action.target === 'new';
@@ -69,6 +92,7 @@ openerp.base.ActionManager = openerp.base.Widget.extend({
             this.inner_stop();
             this.inner_viewmanager = new openerp.base.ViewManagerAction(this, action);
             this.inner_viewmanager.appendTo(this.$element);
+            this.url_update(action);
         }
         /* new window code
             this.rpc("/base/session/save_session_action", { the_action : action}, function(key) {
diff --git a/addons/base_calendar/static/src/js/calendar.js b/addons/base_calendar/static/src/js/calendar.js
index d02fbe490e2..8b0f1e995b6 100644
--- a/addons/base_calendar/static/src/js/calendar.js
+++ b/addons/base_calendar/static/src/js/calendar.js
@@ -302,8 +302,7 @@ openerp.base_calendar.CalendarView = openerp.base.View.extend({
                 // TODO: handle non-empty results.group_by with read_group
                 self.dataset.context = self.context = results.context;
                 self.dataset.domain = self.domain = results.domain;
-                self.dataset.read_slice({
-                        fields: _.keys(self.fields),
+                self.dataset.read_slice(_.keys(self.fields), {
                         offset:0,
                         limit: self.limit
                     }, function(events) {
diff --git a/addons/base_dashboard/static/src/js/dashboard.js b/addons/base_dashboard/static/src/js/dashboard.js
index 422d279a485..727e5e5519c 100644
--- a/addons/base_dashboard/static/src/js/dashboard.js
+++ b/addons/base_dashboard/static/src/js/dashboard.js
@@ -290,7 +290,7 @@ openerp.base_dashboard.ConfigOverview = openerp.base.View.extend({
         this.dataset.domain = [['type', '=', 'manual']];
     },
     start: function () {
-        $.when(this.dataset.read_slice({fields: ['state', 'action_id', 'category_id']}),
+        $.when(this.dataset.read_slice(['state', 'action_id', 'category_id']),
                this.dataset.call('progress'))
             .then(this.on_records_loaded);
     },
@@ -352,9 +352,7 @@ openerp.base_dashboard.ApplicationTiles = openerp.base.View.extend({
     },
     start: function () {
         var self = this;
-        this.dataset.read_slice(
-            {fields: ['name', 'web_icon_data', 'web_icon_hover_data']},
-            function (applications) {
+        this.dataset.read_slice( ['name', 'web_icon_data', 'web_icon_hover_data'], {}, function (applications) {
                 // Create a matrix of 3*x applications
                 var rows = [];
                 while (applications.length) {
@@ -384,9 +382,7 @@ openerp.base_dashboard.Widgets = openerp.base.View.extend({
         this.widgets = new openerp.base.DataSetSearch(this, 'res.widget');
     },
     start: function () {
-        this.user_widgets.read_slice(
-            {fields: ['widget_id', 'user_id']},
-            this.on_widgets_list_loaded);
+        this.user_widgets.read_slice(['widget_id', 'user_id'], {}, this.on_widgets_list_loaded);
     },
     on_widgets_list_loaded: function (user_widgets) {
         var self = this;
diff --git a/addons/base_default_home/static/src/js/home.js b/addons/base_default_home/static/src/js/home.js
index ebdf7ea7d00..e1f96c89da7 100644
--- a/addons/base_default_home/static/src/js/home.js
+++ b/addons/base_default_home/static/src/js/home.js
@@ -86,7 +86,7 @@ openerp.base_default_home = function (openerp) {
             $.blockUI({
                 message: '<img src="/base_default_home/static/src/img/throbber.gif">'
             });
-            Modules.read_slice({fields: ['id']}, function (records) {
+            Modules.read_slice(['id'], function (records) {
                 if (!(records.length === 1)) { return; }
                 Modules.call('state_update',
                     [_.pluck(records, 'id'), 'to install', ['uninstalled']],
diff --git a/addons/base_gantt/static/src/js/gantt.js b/addons/base_gantt/static/src/js/gantt.js
index 307dc94c6b8..6a5342f9c55 100644
--- a/addons/base_gantt/static/src/js/gantt.js
+++ b/addons/base_gantt/static/src/js/gantt.js
@@ -79,7 +79,7 @@ init: function(parent, element_id, dataset, view_id) {
     get_events: function() {
 
         var self = this;
-        this.dataset.read_slice({}, function(result) {
+        this.dataset.read_slice([],{}, function(result) {
             self.load_event(result);
         });
 
@@ -498,7 +498,7 @@ init: function(parent, element_id, dataset, view_id) {
 
     reload_gantt: function() {
         var self = this;
-        this.dataset.read_slice({}, function(response) {
+        this.dataset.read_slice([],{}, function(response) {
             ganttChartControl.clearAll();
             jQuery("#GanttDiv").children().remove();
             self.load_event(response);
diff --git a/addons/base_graph/static/src/js/graph.js b/addons/base_graph/static/src/js/graph.js
index f7c949dc194..e76d38b33bc 100644
--- a/addons/base_graph/static/src/js/graph.js
+++ b/addons/base_graph/static/src/js/graph.js
@@ -89,7 +89,7 @@ openerp.base_graph.GraphView = openerp.base.View.extend({
             }
             this.dataset.domain = domain;
             this.dataset.context = this.view_manager.dataset.context;
-            this.dataset.read_slice({fields: _(this.fields).keys()}, function(res) {
+            this.dataset.read_slice(_(this.fields).keys(),{}, function(res) {
                 self.schedule_chart(res);
             });
         }
@@ -468,7 +468,7 @@ openerp.base_graph.GraphView = openerp.base.View.extend({
             }
             self.dataset.context = results.context;
             self.dataset.domain = results.domain;
-            self.dataset.read_slice({}, $.proxy(self, 'load_chart'));
+            self.dataset.read_slice([],{}, $.proxy(self, 'load_chart'));
         });
     }
 });
diff --git a/addons/web_mobile/static/src/js/form_mobile.js b/addons/web_mobile/static/src/js/form_mobile.js
index a8c7bcc480e..793d944ddcd 100644
--- a/addons/web_mobile/static/src/js/form_mobile.js
+++ b/addons/web_mobile/static/src/js/form_mobile.js
@@ -12,7 +12,7 @@ openerp.web_mobile.FormView = openerp.base.Widget.extend({
         view_id = this.action.views[1][0];
 
         this.dataset = new openerp.base.DataSetSearch(this.session, this.action.res_model, null, null);
-        this.dataset.read_slice({}, function (result) {
+        this.dataset.read_slice([],{}, function (result) {
 
             for (var i = 0; i < result.length; i++) {
                 if (result[i].id == id) {