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###################################################################################
#
# Copyright (C) 2018 MuK IT GmbH
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as
# published by the Free Software Foundation, either version 3 of the
# License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
###################################################################################
import logging
from odoo import api, models, fields
from odoo.osv import expression
from odoo.addons.muk_utils.tools import utils
_logger = logging.getLogger(__name__)
class Base(models.AbstractModel):
_inherit = 'base'
#----------------------------------------------------------
# Helper Methods
#----------------------------------------------------------
def _check_parent_field(self):
if self._parent_name not in self._fields:
raise TypeError("The parent (%s) field does not exist." % self._parent_name)
def _build_search_childs_domain(self, parent_id, domain=[]):
self._check_parent_field()
parent_domain = [[self._parent_name, '=', parent_id]]
return expression.AND([parent_domain, domain]) if domain else parent_domain
#----------------------------------------------------------
# Security
#----------------------------------------------------------
@api.multi
def _filter_access(self, operation):
if self.check_access_rights(operation, False):
return self._filter_access_rules(operation)
return self.env[self._name]
@api.multi
def _filter_access_ids(self, operation):
return self._filter_access(operation).ids
@api.multi
def check_access(self, operation, raise_exception=False):
try:
access_right = self.check_access_rights(operation, raise_exception)
access_rule = self.check_access_rule(operation) is None
return access_right and access_rule
except AccessError:
if raise_exception:
raise
return False
#----------------------------------------------------------
# Hierarchy Methods
#----------------------------------------------------------
@api.model
def search_parents(self, domain=[], order=None):
""" This method finds the top level elements of the hierarchy for a given search query.
:param domain: a search domain <reference/orm/domains> (default: empty list)
:param order: a string to define the sort order of the query (default: none)
:returns: the top level elements for the given search query
"""
return self.browse(self._search_parents(domain=domain, order=order))
@api.model
def search_read_parents(self, domain=[], fields=None, order=None):
""" This method finds the top level elements of the hierarchy for a given search query.
:param domain: a search domain <reference/orm/domains> (default: empty list)
:param fields: a list of fields to read (default: all fields of the model)
:param order: a string to define the sort order of the query (default: none)
:returns: the top level elements for the given search query
"""
records = self.search_parents(domain=domain, order=order)
if not records:
return []
if fields and fields == ['id']:
return [{'id': record.id} for record in records]
result = records.read(fields)
if len(result) <= 1:
return result
index = {vals['id']: vals for vals in result}
return [index[record.id] for record in records if record.id in index]
@api.model
def _search_parents(self, domain=[], order=None):
self._check_parent_field()
self.check_access_rights('read')
if expression.is_false(self, domain):
return []
query = self._where_calc(domain)
self._apply_ir_rules(query, 'read')
from_clause, where_clause, where_clause_arguments = query.get_sql()
parent_where = where_clause and (" WHERE %s" % where_clause) or ''
parent_query = 'SELECT "%s".id FROM ' % self._table + from_clause + parent_where
no_parent_clause ='"{table}"."{field}" IS NULL'.format(
table=self._table,
field=self._parent_name
)
no_access_clause ='"{table}"."{field}" NOT IN ({query})'.format(
table=self._table,
field=self._parent_name,
query=parent_query
)
parent_clause = '({0} OR {1})'.format(
no_parent_clause,
no_access_clause
)
order_by = self._generate_order_by(order, query)
from_clause, where_clause, where_clause_params = query.get_sql()
where_str = (
where_clause and
(" WHERE %s AND %s" % (where_clause, parent_clause)) or
(" WHERE %s" % parent_clause)
)
query_str = 'SELECT "%s".id FROM ' % self._table + from_clause + where_str + order_by
complete_where_clause_params = where_clause_params + where_clause_arguments
self._cr.execute(query_str, complete_where_clause_params)
return utils.uniquify_list([x[0] for x in self._cr.fetchall()])
@api.model
def search_childs(self, parent_id, domain=[], offset=0, limit=None, order=None, count=False):
""" This method finds the direct child elements of the parent record for a given search query.
:param parent_id: the integer representing the ID of the parent record
:param domain: a search domain <reference/orm/domains> (default: empty list)
:param offset: the number of results to ignore (default: none)
:param limit: maximum number of records to return (default: all)
:param order: a string to define the sort order of the query (default: none)
:param count: counts and returns the number of matching records (default: False)
:returns: the top level elements for the given search query
"""
domain = self._build_search_childs_domain(parent_id, domain=domain)
return self.search(domain, offset=offset, limit=limit, order=order, count=count)
@api.model
def search_read_childs(self, parent_id, domain=[], fields=None, offset=0, limit=None, order=None):
""" This method finds the direct child elements of the parent record for a given search query.
:param parent_id: the integer representing the ID of the parent record
:param domain: a search domain <reference/orm/domains> (default: empty list)
:param fields: a list of fields to read (default: all fields of the model)
:param offset: the number of results to ignore (default: none)
:param limit: maximum number of records to return (default: all)
:param order: a string to define the sort order of the query (default: none)
:returns: the top level elements for the given search query
"""
domain = self._build_search_childs_domain(parent_id, domain=domain)
return self.search_read(domain=domain, fields=fields, offset=offset, limit=limit, order=order)