You have to redefine "state" in sale order as follows:

_columns = {'state': fields.selection([('draft', 'Draft Quotation'),
                                        ('to_check', 'Pending'),
                                        ('checked', 'Checked'),
                                        ('sent', 'Quotation sent'),
                                        ('cancel', 'Cancelled'),
                                        ('waiting_date', 'Waiting Schedule'),
                                        ('progress', 'Sales Order'),
                                        ('manual', 'Sale to Invoice'),
                                        ('invoice_except', 'Invoice Exception'),
                                        ('done', 'Done'),],
             'status', readonly=True, track_visibility='onchange', select=True)}

Then add button action in sale order as follows:

def menu_to_check(self, cr, uid, ids, context=None):
        res = self.write(cr, uid, ids, {'state': 'to_check'}, context=context)        
        return res
def menu_checked(self, cr, uid, ids, context=None):
        res = self.write(cr, uid, ids, {'state': 'checked'}, context=context)        
        return res

Also you have to add corresponding two "workflow.activity" xml:

and three "workflow.transition" records  xml:

Two buttons in sale order inherited xml:

Hope this may help you.

Don't forget to give groups for your "checked" button for sale_managers in above xml

Hi,

1) Redefine Existing state field:

state = fields.Selection([   

     ('draft', 'Quotation'),      

    ('sent', 'Quotation Sent'),    

    ('sale', 'Sale Order'),     

  ('pending', 'Pending'),

    ('done', 'Done'),  

    ('cancel', 'Cancelled'),  

      ], string='Status', readonly=True, copy=False, index=True, track_visibility='onchange', default='draft')

2) Redifine the field state in xml..and create new button and its action for proper working as per your requirements

thanks to all and add the status,just that when I click on the button to change the status pending

from quotation to sales order change meand buttons disappear confirming order.

And my status must be before the sale is confirmed.

How could resolve this?

Hello,

In the new API you can use selection_add parameter to append some new options to the selection field.

So you can do:

class SaleOrder(models.Model):
     _inherit = 'sale.order'
     state = fields.Selection(selection_add([('pending', 'Pending')])

You can check this documentation for more details ...

Hope this could hleps ...