Hello everybody!!!

I want toadd a colum in the dashboard of sale.

I have tried this but it doesnt work :/

class sale_report(osv.osv):

    _inherit = 'sale.report'

    _columns = {

        'product_commission': fields.float('# Commission Price', readonly=True),
    }


    def _select(self):
        select_str = """
            WITH currency_rate (currency_id, rate, date_start, date_end) AS (
                    SELECT r.currency_id, r.rate, r.name AS date_start,
                        (SELECT name FROM res_currency_rate r2
                        WHERE r2.name > r.name AND
                            r2.currency_id = r.currency_id
                         ORDER BY r2.name ASC
                         LIMIT 1) AS date_end
                    FROM res_currency_rate r
                )
             SELECT min(l.id) as id,
                    l.product_id as product_id,
                    t.uom_id as product_uom,
                    sum(l.product_uom_qty * l.price_unit / cr.rate * (100.0-l.discount) / 100.0) as product_commission,
                    sum(l.product_uom_qty / u.factor * u2.factor) as product_uom_qty,
                    sum(l.product_uom_qty * l.price_unit / cr.rate * (100.0-l.discount) / 100.0) as price_total,
                    count(*) as nbr,
                    s.date_order as date,
                    s.date_confirm as date_confirm,
                    s.partner_id as partner_id,
                    s.user_id as user_id,
                    s.company_id as company_id,
                    extract(epoch from avg(date_trunc('day',s.date_confirm)-date_trunc('day',s.create_date)))/(24*60*60)::decimal(16,2) as delay,
                    l.state,
                    t.categ_id as categ_id,
                   
                    s.pricelist_id as pricelist_id,
                    s.project_id as analytic_account_id,
                    s.section_id as section_id
        """
        return select_str

    def _from(self):
        from_str = """
                sale_order_line l
                      join sale_order s on (l.order_id=s.id)
                        left join product_product p on (l.product_id=p.id)
                            left join product_template t on (p.product_tmpl_id=t.id)
                    left join product_uom u on (u.id=l.product_uom)
                    left join product_uom u2 on (u2.id=t.uom_id)
                    left join product_pricelist pp on (s.pricelist_id = pp.id)
                    join currency_rate cr on (cr.currency_id = pp.currency_id and
                        cr.date_start <= coalesce(s.date_order, now()) and
                        (cr.date_end is null or cr.date_end > coalesce(s.date_order, now())))
        """
        return from_str

    def _group_by(self):
        group_by_str = """
            GROUP BY l.product_id,
                    l.order_id,
                    t.uom_id,
                    t.categ_id,
                    s.date_order,
                    s.date_confirm,
                    s.partner_id,
                    s.user_id,
                    s.company_id,
                    l.state,
                    s.pricelist_id,
                    s.project_id,
                    s.section_id
        """
        return group_by_str

    def init(self, cr):
        # self._table = sale_report
        tools.drop_view_if_exists(cr, self._table)
        cr.execute("""CREATE or REPLACE VIEW %s as (
            %s
            FROM ( %s )
            %s
            )""" % (self._table, self._select(), self._from(), self._group_by()))
sale_report()

Can anyone help me please.

I got this error :

2017-03-25 22:14:24,275 19102 ERROR company_test openerp.http: Exception during JSON request handling.
Traceback (most recent call last):
  File "/opt/openerp/openerp/http.py", line 544, in _handle_exception
    return super(JsonRequest, self)._handle_exception(exception)
  File "/opt/openerp/openerp/http.py", line 581, in dispatch
    result = self._call_function(**self.params)
  File "/opt/openerp/openerp/http.py", line 317, in _call_function
    return checked_call(self.db, *args, **kwargs)
  File "/opt/openerp/openerp/service/model.py", line 118, in wrapper
    return f(dbname, *args, **kwargs)
  File "/opt/openerp/openerp/http.py", line 314, in checked_call
    return self.endpoint(*a, **kw)
  File "/opt/openerp/openerp/http.py", line 810, in __call__
    return self.method(*args, **kw)
  File "/opt/openerp/openerp/http.py", line 410, in response_wrap
    response = f(*args, **kw)
  File "/opt/openerp/addons/web/controllers/main.py", line 944, in call_kw
    return self._call_kw(model, method, args, kwargs)
  File "/opt/openerp/addons/web/controllers/main.py", line 936, in _call_kw
    return getattr(request.registry.get(model), method)(request.cr, request.uid, *args, **kwargs)
  File "/opt/openerp/openerp/api.py", line 268, in wrapper
    return old_api(self, *args, **kwargs)
  File "/opt/openerp/openerp/models.py", line 2148, in read_group
    cr.execute(query, where_clause_params)
  File "/opt/openerp/openerp/sql_db.py", line 158, in wrapper
    return f(self, *args, **kwargs)
  File "/opt/openerp/openerp/sql_db.py", line 234, in execute
    res = self._obj.execute(query, params)
ProgrammingError: column sale_report.product_commission does not exist LINE 2: ...m("sale_report"."price_total") AS price_total,sum("sale_repo...