There are 3 classes, sync.test.subject.a which has many2many relation with sync.test.subject.b which is inherited by sync.test.subject.c.
sync.test.subject.b's separated_chars field is populated through a compute function called _compute_separated_chars which is triggered by the change of sync.test.subject.b's chars field.
The role of sync.test.subject.c is basically to set chars by its own name so that _compute_separated_chars is triggered.
The problem is I can't delete leftover records that are related to a Many2many field (namely sync.test.subject.a leftover records) from inside the compute function because BEFORE the function is executed the field is already emptied by the system so I can't get the ids. I can't even use temporary field to store sync.test.subject.a ids because any changes that are not related to separated_chars won't be committed by the system from inside the compute function (By any changes, I mean really ANY changes either to other fields from the same model or other changes to other models won't be committed). How do I solve this?
Models:
from openerp import models, fields, api, _
class sync_test_subject_a(models.Model):
_name = "sync.test.subject.a"
name = fields.Char('Name')
sync_test_subject_a()
class sync_test_subject_b(models.Model):
_name = "sync.test.subject.b"
chars = fields.Char('Characters')
separated_chars = fields.Many2many('sync.test.subject.a',string='Separated Name', store=True, compute='_compute_separated_chars')
@api.one
@api.depends('chars')
def _compute_separated_chars(self):
a_model = self.env['sync.test.subject.a']
if not self.chars:
return
self.separated_chars.unlink()
#DELETE LEFTOVER RECORDS FROM a_model
for character in self.chars:
self.separated_chars += a_model.create({'name': character})
sync_test_subject_b()
class sync_test_subject_c(models.Model):
_name = "sync.test.subject.c"
_inherit = "sync.test.subject.b"
name = fields.Char('Name')
@api.one
def action_set_char(self):
self.chars = self.name
sync_test_subject_c()
Views:
<?xml version="1.0" encoding="UTF-8"?>
<openerp>
<data>
<!-- Top menu item -->
<menuitem name="Testing Module"
id="testing_module_menu"
sequence="1"/>
<menuitem id="sync_test_menu" name="Synchronization Test" parent="testing_module_menu" sequence="1"/>
<!--Expense Preset View-->
<record model="ir.ui.view" id="sync_test_subject_c_form_view">
<field name="name">sync.test.subject.c.form.view</field>
<field name="model">sync.test.subject.c</field>
<field name="type">form</field>
<field name="arch" type="xml">
<form string="Sync Test" version="7.0">
<header>
<div class="header_bar">
<button name="action_set_char" string="Set Name To Chars" type="object" class="oe_highlight"/>
</div>
</header>
<sheet>
<group>
<field string="Name" name="name" class="oe_inline"/>
<field string="Chars" name="chars" class="oe_inline"/>
<field string="Separated Chars" name="separated_chars" class="oe_inline"/>
</group>
</sheet>
</form>
</field>
</record>
<record model="ir.ui.view" id="sync_test_subject_c_tree_view">
<field name="name">sync.test.subject.c.tree.view</field>
<field name="model">sync.test.subject.c</field>
<field name="type">tree</field>
<field name="arch" type="xml">
<tree string="Class">
<field string="Name" name="name"/>
</tree>
</field>
</record>
<record model="ir.ui.view" id="sync_test_subject_c_search">
<field name="name">sync.test.subject.c.search</field>
<field name="model">sync.test.subject.c</field>
<field name="type">search</field>
<field name="arch" type="xml">
<search string="Sync Test Search">
<field string="Name" name="name"/>
</search>
</field>
</record>
<record id="sync_test_subject_c_action" model="ir.actions.act_window">
<field name="name">Sync Test</field>
<field name="res_model">sync.test.subject.c</field>
<field name="view_type">form</field>
<field name="domain">[]</field>
<field name="context">{}</field>
<field name="view_id" eval="sync_test_subject_c_tree_view"/>
<field name="search_view_id" ref="sync_test_subject_c_search"/>
<field name="target">current</field>
<field name="help">Synchronization Test</field>
</record>
<menuitem action="sync_test_subject_c_action" icon="STOCK_JUSTIFY_FILL" sequence="1"
id="sync_test_subject_c_action_menu" parent="testing_module.sync_test_menu"
/>
</data>
</openerp>
I think this behavior is caused by a lazy implementation by Odoo to handle chain computed field triggers instead of handling the triggers correctly (sequentially based on the dependencies) they just update EVERY computed fields EVERYTIME there are changes to EVERY OTHER FIELD. And because of that they restrict any update to any other field from inside the compute function. Because if they don't it will blow up with recursive compute function calling.
