I try to insert a custom widget in openERP 6.1.

theme_view.xml:

<?xml version="1.0"?>
<openerp>
    <data>
        <!-- VIEW -->
        <record model="ir.ui.view" id="theme_module_form">
            <field name="name">theme.module.form</field>
            <field name="model">theme.module</field>
            <field name="type">form</field>
            <field name="arch" type="xml">
                <form string="theme module">
                        <field name="description" colspan="4" widget="test" />
                </form>
            </field>
        </record>
        <!-- ACTIONS -->
        <record model="ir.actions.act_window" id="action_theme_module">
            <field name="name">Aff</field>
            <field name="res_model">theme.module</field>
            <field name="view_type">form</field>
            <field name="view_mode">form</field>
        </record>
        <!--MENU-->
        <menuitem name="Je suis ici" parent="base.menu_config" id="menu_test" action="action_theme_module" />
    </data>
</openerp>

__openerp__.py

{
    'name': "theme module",
    'author': "emisys",
    'category' : 'Outils Emisys',
    'description':'un module',
    'version': "1.0",
    'depends': ['web','base_setup'],
    'css': [ 'static/src/css/resource.css' ],
    'js': [ 'static/src/js/resource.js', 'static/src/js/lib.js', ],
    'qweb' : [  'static/src/xml/resource.xml','static/src/xml/lib.xml',],
    'update_xml': ['theme_view.xml'],
    'installable': True,
    'auto_install': True,
}

resource.js:

 openerp.resource = function (openerp)
{   
    openerp.web.form.widgets.add('test', 'openerp.resource.Mywidget');
    openerp.resource.Mywidget = openerp.web.form.FieldChar.extend(
        {
        template : "test",
        init: function (view, code) {
            this._super(view, code);
            console.log('loading...\n\n\n');
        alert('go javascript')
        }
    });
}

But openerp don't find my widget:

View error Can't find field 'description' in the following view parts composing the view of object model 'theme.module': * theme.module.form

If you have an idea :)