I'm making a new modul, in this modul I want to import the hr_timesheet stuff from the standard modul from odoo8.

I read that with _inherits = I can use the same for example "fields" from the standard hr_timesheet modul in my new modul.

I want to add those fields in a new view at a new navigation button in odoo.

How can I do that view in a simple way.

In the topbar in odoo I have make a button with this:

<openerp>
    <data>
	<!--Gets triggered by the record with id 'buttons_example_action'. Which in turn is triggered on click. -->
	<record model="ir.ui.view" id="ir.ui.view">
	    <field name="name">Buttons</field>
	    <field name="model">button.demo</field>
   
	    <field name="type">form</field>
	    <field name="arch" type="xml">
	      <form string="Button record">
		    <group>

		    </group>
		    </form>
	    </field>
	</record>
	<!--The action -->
        <record model="ir.actions.act_window" id="leistungserfassung_action">
            <field name="name">meine Leistungserfassung</field>
            <field name="res_model">button.demo</field>
            <field name="view_type">form</field>
            <field name="view_mode">form,tree</field>
            <field name='view_id' ref='view_buttons_form'/>
        </record>
        <!-- top level menu: no parent -->
        <menuitem id="main_button_menu" name="Leistungserfassung"/>
        <menuitem id="button_menu" name="button demo"
                  parent="main_button_menu"/>
        <menuitem id="menu_detail_logging"
                action="leistungserfassung_action" parent="button_menu"
                sequence="20"/>
    </data>
</openerp>

How can I inherit the hr_timesheet view in this new button?

I try that with making a class like this:

from openerp import models, fields, api
#Non-odoo library
import random
from random import randint
import string
class button_action_demo(models.Model):
    _inherits = "hr_timesheet_sheet.sheet"

but this is not working.