Hello,
I think I'm using the Model. __post_setup__ class not correctly, but how
I'm using it is working in Tryton-3.6.5 but not in Tryton-4.0.0 and maybe
there are other ways to do it.
What I'm trying to do, is to build an IOT-platform into Tryton where agents
can connect to and update several values they allowed to change. To
minimize database-queries and updating database-records or inserting new
ones, I build a dict which lives in memory. The agents send the new values
in and Tryton will update the values in the dict, and a cron-job will
archive those values into the database at certain moments. The new values
are also used to trigger events like sending mail, executing scripts etc.
To create the dict in memory I'm using the __post_setup__ class to populate
the dict with the several values.
@classmethod
def __post_setup__(cls):
super(Trigger, cls).__post_setup__()
# get the triggers
triggers = cls.search( [('id', '>', 0 )] )
if triggers:
# Build the datastructure in memory
for trigger in cls.browse( triggers ):
sensors = []
on_activate = []
on_deactivate = []
# get the sensors and conditions
for sensor in trigger.sensor:
if len(sensor.condition) > 2:
sensors.append({
"id" : sensor.id,
"sensor" : sensor.sensor.id,
"condition" : sensor.condition,
})
# only add the trigger to the list when there are
# sensors and conditions
if len(sensors):
MEM_TRIGGERS.append({
"id" : trigger.id,
"name" : trigger.name,
"sequence" : trigger.sequence,
"min_delay" : trigger.minimum_time_delay,
"min_active" : trigger.minimum_time_active,
"when" : datetime.datetime.utcnow(),
"activated" : trigger.activated,
"enabled" : trigger.enabled,
"sensors" : sensors
})
I have extended the ir.trigger with
sensor = fields.One2Many('iot.triggersensors', 'trigger', 'Sensor')
And the iot.triggersensors
class TriggerSensor(ModelSQL, ModelView):
"TriggerSensor"
__name__ = 'iot.triggersensors'
name = fields.Char('Name')
trigger = fields.Many2One('ir.trigger', 'Trigger',
domain=[('on_sensor','=',True)], ondelete='CASCADE')
condition = fields.Char('Condition')
This is working in Tryton version 3.65, but in 4.0.0 I get
File "/home/ed/ERP/iot/trytond-4.0.0/trytond/pool.py", line 229, in setup
cls.__post_setup__()
File "/home/ed/ERP/iot/trytond-4.0.0/trytond/modules/iot/iot.py", line
1173, in __post_setup__
for sensor in trigger.sensor:
File "/home/ed/ERP/iot/trytond-4.0.0/trytond/model/modelstorage.py", line
1352, in __getattr__
read_data = self.read(list(ids), ffields.keys())
File "/home/ed/ERP/iot/trytond-4.0.0/trytond/model/modelsql.py", line
744, in read
getter_result = field.get(ids, cls, fname, values=result)
File "/home/ed/ERP/iot/trytond-4.0.0/trytond/model/fields/one2many.py",
line 86, in get
field = Relation._fields[self.field]
AttributeError: type object 'iot.triggersensors' has no attribute '_fields'
So my question is, are there other methods to accomplish this (after the
Tryton-server is started create a dict into memory)? or is this a bug in
Tryton-4.0.0?
Regards,
Ed
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