In which case we use the attribute _auto = False
in our classes ?
It seems that its use has changed in v7.
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Hello,
_auto is a Predefined field that determines whether a corresponding PostgreSQL table must be generated automatically from the object. Setting _auto to False can be useful in case of OpenERP objects generated from PostgreSQL views. See the âDocumentâ for more details.
Thanks,
Serpent Consulting Services.
The parameter _auto=False
to the OpenERP object is used, so no table corresponding to the _columns
dictionary is created automatically. For getting values add a method init(self, cr)
that creates a PostgreSQL View matching the fields declared in _columns
. And also all fields in the _columns
dictionary must have a flag readonly=True
.
For example:
class report_crm_case_user(osv.osv):
_name = "report.crm.case.user"
_description = "Cases by user and section"
_auto = False
_columns = {
'name': fields.date('Month', readonly=True),
'user_id':fields.many2one('res.users', 'User', readonly=True, relate=True),
'section_id':fields.many2one('crm.case.section', 'Section', readonly=True, relate=True),
'amount_revenue': fields.float('Est.Revenue', readonly=True),
'amount_costs': fields.float('Est.Cost', readonly=True),
'amount_revenue_prob': fields.float('Est. Rev*Prob.', readonly=True),
'nbr': fields.integer('# of Cases', readonly=True),
'probability': fields.float('Avg. Probability', readonly=True),
'state': fields.selection(AVAILABLE_STATES, 'State', size=16, readonly=True),
'delay_close': fields.integer('Delay to close', readonly=True),
}
_order = 'name desc, user_id, section_id'
def init(self, cr):
cr.execute("""
create or replace view report_crm_case_user as (
select
min(c.id) as id,
substring(c.create_date for 7)||'-01' as name,
c.state,
c.user_id,
c.section_id,
count(*) as nbr,
sum(planned_revenue) as amount_revenue,
sum(planned_cost) as amount_costs,
sum(planned_revenue*probability)::decimal(16,2) as amount_revenue_prob,
avg(probability)::decimal(16,2) as probability,
to_char(avg(date_closed-c.create_date), 'DD"d" `HH24:MI:SS') as delay_close
from
crm_case c
group by substring(c.create_date for 7), c.state, c.user_id, c.section_id
)""")
report_crm_case_user()
You can find the applications of _auto=False in the Sales Analysis report in Reporting tab of OpenERP and the code in report folder in sales module.
I would say that in 99.99% of the cases you won't need it.