Odoo 9 context value missing in override method - odoo

Question

in odoo9 I override the search_read method. The super method works ok. With the data returned I want to make a filter, the filter is on the context, the value was asigned on the click of the button comming from the view.
<button name="status_instalacion" string="Instalación" type="action" icon="fa-wrench fa-2x" context="{'stage_id' : 1, 'current_id': active_id}"/>
The problem occurs when I query the context in the search_read method. It exists but doesn't have the values I placed
context on click of button:
self._context
{u'lang': u'en_US', u'stage_id': 1, u'tz': False, u'uid': 1, u'current_id': 40, u'tipo_validacion': u'Sistemas Cr\xedticos', u'sistema_critico': u'AGUA'}
the stage_id is the value I want
context on read_search:
self._context
{u'lang': u'en_US', u'bin_size': True, u'tipo_validacion': u'Sistemas Cr\xedticos', u'tz': False, u'uid': 1,
u'active_test': False, u'sistema_critico': u'AGUA'}
as you can see the 'stage_id' value is missing
Tried also assigning the value to a property of the class, but the value never changes it is always the initial value.
from logging import getLogger
from openerp import api, fields, models
_logger = getLogger(__name__)
class MgmtsystemSistemasEquipos(models.Model):
""" Equipos."""
_name = 'mgmtsystem.sistemas.equipos'
dmy = 99 # ---> this value never changes
def dummy(self): # ---> tried calling a function. not work
return self.dmy
def set_dummy(self, id): # ----> set the value
self.dmy = id or self.dmy
codigo = fields.Char(
string=u'Código',
help=u"Código equipo",
required=True,
size=30)
name = fields.Char(
string=u'Nombre equipo',
required=True,
readonly=False,
index=True,
help="Nombre corto equipo",
size=30)
stage_id = fields.Many2one(
'mgmtsystem.action.stage',
'Fase',
default=_default_stage,
readonly=True)
#api.multi
def status_instalacion(self):
import pudb
pu.db
# save value to variable dmy to retrieve later
id = self._context.get('stage_id')
self.set_dummy(id)
#api.model
def search_read(
self, domain=None, fields=None, offset=0,
limit=None, order=None):
import pudb
pu.db
# here the variable allways has the original value (99)
current_stage_id = self.dmy
current_stage_id = self.dummy()
current_stage_id = getattr(self, dmy)
res = super(MgmtsystemSistemasEquipos, self).search_read(
domain, fields, offset, limit, order)
current_id = res[0]['id']
valid_protocols_ids = self._get_ids(
current_stage_id, current_id,
'mgmtsystem_equipos_protocolos',
'mgmtsystem_equipos_protocolos_rel',
'protocolo_id')
# # remove ids
res[0]['protocolos_ids'] = valid_protocols_ids
res[0]['informes_ids'] = valid_informes_ids
res[0]['anexos_ids'] = valid_anexos_ids
return res
# #api.multi
def _get_ids(self, current_stage_id, current_id, model, model_rel, field_rel):
import pudb
pu.db
# in this method the value of the variable is allways the original
current_stage_id = self.dummy()
sql = """ select a.id from
%s as a
join %s as b
on a.id = b.%s where b.equipo_id = %s
and a.stage_id = %s; """ % (model, model_rel, field_rel,
current_id, current_stage_id)
import psycopg2
try:
self.env.cr.execute(sql)
except psycopg2.ProgrammingError, ex:
message = 'Error trying to download data from server. \n {0} \n {1}'.format(ex.pgerror, sql)
_logger.info(message)
return False
rows = self.env.cr.fetchall()
list_of_ids = []
for row in rows:
list_of_ids.append(row[0])
return list_of_ids
I don't know Python very well, and thats the cause of my misunderstanding of how to read the value of the variable.
But then again, Why is the context modified in the search_read method?.
Thank you.

Answer 1

You should try following.
#api.model
def search_read(self, domain=None, fields=None, offset=0, limit=None, order=None):
import pudb
pu.db
# Here you need to get the value from the context.
current_stage_id = self._context.get('stage_id', getattr(self, dmy))
res = super(MgmtsystemSistemasEquipos, self).search_read(domain=domain, fields=fields, offset=offset, limit=limit, order=order)
current_id = res[0]['id']
valid_protocols_ids = self._get_ids(
current_stage_id, current_id,
'mgmtsystem_equipos_protocolos',
'mgmtsystem_equipos_protocolos_rel',
'protocolo_id')
# # remove ids
res[0]['protocolos_ids'] = valid_protocols_ids
res[0]['informes_ids'] = valid_informes_ids
res[0]['anexos_ids'] = valid_anexos_ids
return res
In your code those lines won't work just because there is no recordset available in self (it's correct behaviour search_read must have #api.model decorator).
# here the variable allways has the original value (99)
current_stage_id = self.dmy
current_stage_id = self.dummy()
current_stage_id = getattr(self, dmy)
So just remove those and lines and apply some other logic to get data.