OpenERP - Extra Fields

XML:

<?xml version="1.0" encoding="utf-8"?>
<openerp>
    <data>

        <record model="ir.ui.view" id="project_task_time_control_search_view_gtd">
            <field name="name">project.task.tree.time</field>
            <field name="model">project.task</field>
            <field name="inherit_id" ref="project.view_task_form2" />
            <field name="arch" type="xml">
                <field name="hours" position="after">
                    <field name="textual_field" />
                </field>
            </field>
        </record>

    </data>
</openerp>

PY:

from openerp.osv import orm, fields


class project_work(orm.Model):
    _inherit = 'account.analytic.line'

    _columns = {
        'textual_field' : fields.text('Note'),
    }


project_work()