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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 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) 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') 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# - "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, 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.multi def _get_domain(self): """ override me to customize domains according exceptions cases """ self.ensure_one() return safe_eval(self.domain)
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_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')))
@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 _reverse_field(self): """Name of the many2many field from exception rule to self.
In order to take advantage of domain optimisation, exception rule model should have a many2many field to inherited object. The opposit relation already exists in the name of exception_ids
Example: class ExceptionRule(models.Model): _inherit = 'exception.rule'
model = fields.Selection( selection_add=[ ('sale.order', 'Sale order'), [...] ]) sale_ids = fields.Many2many( 'sale.order', string='Sales') [...] """
exception_obj = self.env['exception.rule'] reverse_fields = self.env['ir.model.fields'].search([ ['model', '=', 'exception.rule'], ['ttype', '=', 'many2many'], ['relation', '=', self[0]._name], ]) # ir.model.fields may contain old variable name # so we check if the field exists on exception rule return ([ field.name for field in reverse_fields if hasattr(exception_obj, field.name) ] or [None])[0]
@api.multi def detect_exceptions(self): """List all exception_ids applied on self
Exception ids are also written on records """
if not self: return [] exception_obj = self.env['exception.rule'] all_exceptions = exception_obj.sudo().search( [('rule_group', '=', self[0].rule_group)]) # TODO fix self[0] : it may not be the same on all ids in self model_exceptions = all_exceptions.filtered( lambda ex: ex.model == self._name) sub_exceptions = all_exceptions.filtered( lambda ex: ex.model != self._name)
reverse_field = self._reverse_field() if reverse_field: optimize = True else: optimize = False
exception_by_rec, exception_by_rule = self._detect_exceptions( model_exceptions, sub_exceptions, optimize)
all_exception_ids = [] for obj, exception_ids in exception_by_rec.iteritems(): obj.exception_ids = [(6, 0, exception_ids)] all_exception_ids += exception_ids for rule, exception_ids in exception_by_rule.iteritems(): rule[reverse_field] = [(6, 0, exception_ids.ids)] if exception_ids: all_exception_ids += [rule.id] return list(set(all_exception_ids))
@api.model def _exception_rule_eval_context(self, obj_name, rec): return {obj_name: rec, '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, 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, 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, optimize=False, ): """Find exceptions found on self.
@returns exception_by_rec: (record_id, exception_ids) exception_by_rule: (rule_id, record_ids) """
exception_by_rec = {} exception_by_rule = {} exception_set = set() python_rules = [] dom_rules = [] optim_rules = []
for rule in model_exceptions: if rule.exception_type == 'by_py_code': python_rules.append(rule) elif rule.exception_type == 'by_domain' and rule.domain: if optimize: optim_rules.append(rule) else: dom_rules.append(rule)
for rule in optim_rules: domain = rule._get_domain() domain.append(['ignore_exception', '=', False]) domain.append(['id', 'in', self.ids]) records_with_exception = self.search(domain) exception_by_rule[rule] = records_with_exception if records_with_exception: exception_set.add(rule.id)
if len(python_rules) or len(dom_rules) or sub_exceptions: for rec in self: for rule in python_rules: if ( not rec.ignore_exception and self._rule_eval(rule, rec.rule_group, rec) ): exception_by_rec.setdefault(rec, []).append(rule.id) exception_set.add(rule.id) for rule in dom_rules: # there is no reverse many2many, so this rule # can't be optimized, see _reverse_field domain = rule._get_domain() domain.append(['ignore_exception', '=', False]) domain.append(['id', '=', rec.id]) if self.search_count(domain): exception_by_rec.setdefault( rec, []).append(rule.id) exception_set.add(rule.id) if sub_exceptions: group_line = rec.rule_group + '_line' for obj_line in rec._get_lines(): for rule in sub_exceptions: if rule.id in exception_set: # 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 if rule.exception_type == 'by_py_code': if self._rule_eval( rule, group_line, obj_line ): exception_by_rec.setdefault( rec, []).append(rule.id) elif ( rule.exception_type == 'by_domain' and rule.domain ): # sub_exception are currently not optimizable domain = rule._get_domain() domain.append(('id', '=', obj_line.id)) if obj_line.search_count(domain): exception_by_rec.setdefault( rec, []).append(rule.id) return exception_by_rec, exception_by_rule
@implemented_by_base_exception def _get_lines(self): pass
def _default_get_lines(self): return []
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