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base_exception.py
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base_exception.py
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# -*- coding: utf-8 -*-
# © 2011 Raphaël Valyi, Renato Lima, Guewen Baconnier, Sodexis
# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
import time
from odoo import api, models, fields, _
from odoo.exceptions import UserError, ValidationError
from odoo.tools.safe_eval import safe_eval
from odoo import osv
class ExceptionRule(models.Model):
_name = 'exception.rule'
_description = "Exception Rules"
_order = 'active desc, sequence asc'
name = fields.Char('Exception Name', required=True, translate=True)
description = fields.Text('Description', translate=True)
sequence = fields.Integer(
string='Sequence',
help="Gives the sequence order when applying the test")
model = fields.Selection(
selection=[],
string='Apply on', required=True)
exception_type = fields.Selection(
selection=[('by_domain', 'By domain'),
('by_py_code', 'By python code')],
string='Exception Type', required=True, default='by_py_code',
help="By python code: allow to define any arbitrary check\n"
"By domain: limited to a selection by an odoo domain:\n"
" performance can be better when exceptions "
" are evaluated with several records")
domain = fields.Char('Domain')
active = fields.Boolean('Active', default=True)
code = fields.Text(
'Python Code',
help="Python code executed to check if the exception apply or "
"not. The code must apply failed = True to apply the "
"exception.",
default="""
# Python code. Use failed = True to block the base.exception.
# You can use the following variables :
# - self: ORM model of the record which is checked
# - object: same as order or line, browse_record of the base.exception or
# base.exception line
# - pool: ORM model pool (i.e. self.pool, deprecated in new api)
# - obj: same as object
# - env: ORM model pool (i.e. self.env)
# - time: Python time module
# - cr: database cursor
# - uid: current user id
# - context: current context
""")
@api.constrains('exception_type', 'domain', 'code')
def check_exception_type_consistency(self):
for rule in self:
if ((rule.exception_type == 'by_py_code' and not rule.code) or
(rule.exception_type == 'by_domain' and not rule.domain)):
raise ValidationError(
_("There is a problem of configuration, python code or "
"domain is missing to match the exception type.")
)
@api.multi
def _get_domain(self):
""" override me to customize domains according exceptions cases """
self.ensure_one()
return safe_eval(self.domain)
class BaseExceptionMethod(models.AbstractModel):
_name = 'base.exception.method'
@api.multi
def _get_main_records(self):
"""
Used in case we check exception on a record but write these
exceptions on a parent record. Typical example is with
sale.order.line. We check exceptions on some sale order lines but
write these exceptions on the sale order, so they are visible.
"""
return self
@api.multi
def _reverse_field(self):
raise NotImplementedError()
def _rule_domain(self):
"""Filter exception.rules.
By default, only the rules with the correct model
will be used.
"""
return [('model', '=', self._name)]
@api.multi
def detect_exceptions(self):
"""List all exception_ids applied on self
Exception ids are also written on records
"""
rules = self.env['exception.rule'].sudo().search(
self._rule_domain())
all_exception_ids = []
for rule in rules:
records_with_exception = self._detect_exceptions(rule)
reverse_field = self._reverse_field()
main_records = self._get_main_records()
commons = main_records & rule[reverse_field]
to_remove = commons - records_with_exception
to_add = records_with_exception - commons
to_remove_list = [(3, x.id, _) for x in to_remove]
to_add_list = [(4, x.id, _) for x in to_add]
rule.write({reverse_field: to_remove_list + to_add_list})
if records_with_exception:
all_exception_ids.append(rule.id)
return all_exception_ids
@api.model
def _exception_rule_eval_context(self, rec):
return {'self': self.pool.get(rec._name),
'object': rec,
'obj': rec,
'pool': self.pool,
'env': self.env,
'cr': self.env.cr,
'uid': self.env.uid,
'user': self.env.user,
'time': time,
# copy context to prevent side-effects of eval
'context': self.env.context.copy()}
@api.model
def _rule_eval(self, rule, rec):
expr = rule.code
space = self._exception_rule_eval_context(rec)
try:
safe_eval(expr,
space,
mode='exec',
nocopy=True) # nocopy allows to return 'result'
except Exception, e:
raise UserError(
_('Error when evaluating the exception.rule '
'rule:\n %s \n(%s)') % (rule.name, e))
return space.get('failed', False)
@api.multi
def _detect_exceptions(self, rule):
if rule.exception_type == 'by_py_code':
return self._detect_exceptions_by_py_code(rule)
elif rule.exception_type == 'by_domain':
return self._detect_exceptions_by_domain(rule)
@api.multi
def _get_base_domain(self):
return [('ignore_exception', '=', False), ('id', 'in', self.ids)]
@api.multi
def _detect_exceptions_by_py_code(self, rule):
"""
Find exceptions found on self.
"""
domain = self._get_base_domain()
records = self.search(domain)
records_with_exception = self.env[self._name]
for record in records:
if self._rule_eval(rule, record):
records_with_exception |= record
return records_with_exception
@api.multi
def _detect_exceptions_by_domain(self, rule):
"""
Find exceptions found on self.
"""
base_domain = self._get_base_domain()
rule_domain = rule._get_domain()
domain = osv.expression.AND([base_domain, rule_domain])
return self.search(domain)
class BaseException(models.AbstractModel):
_inherit = 'base.exception.method'
_name = 'base.exception'
_order = 'main_exception_id asc'
main_exception_id = fields.Many2one(
'exception.rule',
compute='_compute_main_error',
string='Main Exception',
store=True)
exception_ids = fields.Many2many(
'exception.rule',
string='Exceptions')
ignore_exception = fields.Boolean('Ignore Exceptions', copy=False)
@api.depends('exception_ids', 'ignore_exception')
def _compute_main_error(self):
for obj in self:
if not obj.ignore_exception and obj.exception_ids:
obj.main_exception_id = obj.exception_ids[0]
else:
obj.main_exception_id = False
@api.multi
def _popup_exceptions(self):
action = self._get_popup_action()
action = action.read()[0]
action.update({
'context': {
'active_model': self._name,
'active_id': self.ids[0],
'active_ids': self.ids
}
})
return action
@api.model
def _get_popup_action(self):
action = self.env.ref('base_exception.action_exception_rule_confirm')
return action
@api.multi
def _check_exception(self):
"""
This method must be used in a constraint that must be created in the
object that inherits for base.exception.
for sale :
@api.constrains('ignore_exception',)
def sale_check_exception(self):
...
...
self._check_exception
"""
exception_ids = self.detect_exceptions()
if exception_ids:
exceptions = self.env['exception.rule'].browse(exception_ids)
raise ValidationError('\n'.join(exceptions.mapped('name')))