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# -*- coding: utf-8 -*-# © 2011 Raphaël Valyi, Renato Lima, Guewen Baconnier, Sodexis# © 2017 Akretion (http://www.akretion.com)# Mourad EL HADJ MIMOUNE <mourad.elhadj.mimoune@akretion.com># License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
import timefrom functools import wraps
from odoo import api, models, fields, _from odoo.exceptions import UserError, ValidationErrorfrom odoo.tools.safe_eval import safe_eval
def implemented_by_base_exception(func): """Call a prefixed function based on 'namespace'.""" @wraps(func) def wrapper(cls, *args, **kwargs): fun_name = func.__name__ fun = '_%s%s' % (cls.rule_group, fun_name) if not hasattr(cls, fun): fun = '_default%s' % (fun_name) return getattr(cls, fun)(*args, **kwargs) return wrapper
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") rule_group = fields.Selection( selection=[], help="Rule group is used to group the rules that must validated " "at same time for a target object. Ex: " "validate sale.order.line rules with sale order rules.", required=True) model = fields.Selection( selection=[], string='Apply on', required=True) active = fields.Boolean('Active') next_state = fields.Char( 'Next state', help="If we detect exception we set de state of object (ex purchase) " "to the next_state (ex 'to approve'). If there are more than one " "exception detected and all have a value for next_state, we use" "the exception having the smallest sequence value") code = fields.Text( 'Python Code', help="Python code executed to check if the exception apply or " "not. The code must apply block = 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# - "rule_group" or "rule_group_"line:# browse_record of the base.exception or# base.exception line (ex rule_group = sale for sale order)# - object: same as order or line, browse_record of the base.exception or# base.exception line# - pool: ORM model pool (i.e. self.pool)# - time: Python time module# - cr: database cursor# - uid: current user id# - context: current context""")
@api.constrains('next_state') def _check_next_state_value(self): """ Ensure that the next_state value is in the state values of
destination model """
for rule in self: if rule.next_state: select_vals = self.env[ rule.model].fields_get()[ 'state']['selection'] if rule.next_state\ not in [s[0] for s in select_vals]: raise ValidationError( _('The value "%s" you chose for the "next state" ' 'field state of "%s" is wrong.' ' Value must be in this list %s') % (rule.next_state, rule.model, select_vals) )
class BaseException(models.AbstractModel): _name = 'base.exception'
_order = 'main_exception_id asc'
main_exception_id = fields.Many2one( 'exception.rule', compute='_compute_main_error', string='Main Exception', store=True) rule_group = fields.Selection( [], readonly=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_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')))
@api.multi def test_exceptions(self): """
Condition method for the workflow from draft to confirm """
if self.detect_exceptions(): return False return True
@api.multi def detect_exceptions(self): """returns the list of exception_ids for all the considered base.exceptions
"""
if not self: return [] exception_obj = self.env['exception.rule'] all_exceptions = exception_obj.sudo().search( [('rule_group', '=', self[0].rule_group)]) model_exceptions = all_exceptions.filtered( lambda ex: ex.model == self._name) sub_exceptions = all_exceptions.filtered( lambda ex: ex.model != self._name)
all_exception_ids = [] for obj in self: if obj.ignore_exception: continue exception_ids = obj._detect_exceptions( model_exceptions, sub_exceptions) obj.exception_ids = [(6, 0, exception_ids)] all_exception_ids += exception_ids return all_exception_ids
@api.model def _exception_rule_eval_context(self, obj_name, rec): user = self.env['res.users'].browse(self._uid) return {obj_name: rec, 'self': self.pool.get(rec._name), 'object': rec, 'obj': rec, 'pool': self.pool, 'cr': self._cr, 'uid': self._uid, 'user': user, 'time': time, # copy context to prevent side-effects of eval 'context': self._context.copy()}
@api.model def _rule_eval(self, rule, obj_name, rec): expr = rule.code space = self._exception_rule_eval_context(obj_name, rec) try: safe_eval(expr, space, mode='exec', nocopy=True) # nocopy allows to return 'result' except Exception as 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, model_exceptions, sub_exceptions): self.ensure_one() exception_ids = [] next_state_rule = False for rule in model_exceptions: if self._rule_eval(rule, self.rule_group, self): exception_ids.append(rule.id) if rule.next_state: if not next_state_rule: next_state_rule = rule elif next_state_rule and\ rule.sequence < next_state_rule.sequence: next_state_rule = rule if sub_exceptions: for obj_line in self._get_lines(): for rule in sub_exceptions: if rule.id in exception_ids: # we do not matter if the exception as already been # found for an line of this object # (ex sale order line if obj is sale order) continue group_line = self.rule_group + '_line' if self._rule_eval(rule, group_line, obj_line): exception_ids.append(rule.id) # set object to next state if next_state_rule: self.state = next_state_rule.next_state return exception_ids
@implemented_by_base_exception def _get_lines(self): pass
def _default_get_lines(self): return []
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