ODOO-如何過濾包含零項目的Many2Many字段

Question

如何過濾Odoo Many2Many字段包含零個項目。

示例：我正在嘗試篩選具有0個關注者的任務（message_follower_ids）。

[['message_follower_ids'，'='，False]]不返回任何結果，但是應該有很多結果。

Odoo版本：8.0

坦率

Answer 1

message_follower_ids是一個計算字段。

如果要按任何計算字段進行搜索，則必須在舊api中編寫它的搜索方法，即fnct_search，然后可以返回domain。

在您的情況下，message_follower_ids是一個計算對象，還具有fnct_search方法。 因此，只要您在右上角的搜索欄中搜索關注者，該方法就會調用並返回域，您將獲得過濾列表。

但是在那fnct_search中，您需要進行更改以實現您的需求。

像這樣。

class mail_thread(osv.AbstractModel):
    _inherit = 'mail.thread'    

    def _get_followers(self, cr, uid, ids, name, arg, context=None):
        fol_obj = self.pool.get('mail.followers')
        fol_ids = fol_obj.search(cr, SUPERUSER_ID, [('res_model', '=', self._name), ('res_id', 'in', ids)])
        res = dict((id, dict(message_follower_ids=[], message_is_follower=False)) for id in ids)
        user_pid = self.pool.get('res.users').read(cr, uid, [uid], ['partner_id'], context=context)[0]['partner_id'][0]
        for fol in fol_obj.browse(cr, SUPERUSER_ID, fol_ids):
            res[fol.res_id]['message_follower_ids'].append(fol.partner_id.id)
            if fol.partner_id.id == user_pid:
                res[fol.res_id]['message_is_follower'] = True
        return res

    def _search_followers(self, cr, uid, obj, name, args, context):
        """Search function for message_follower_ids

        Do not use with operator 'not in'. Use instead message_is_followers
        """
        fol_obj = self.pool.get('mail.followers')
        res = []
        for field, operator, value in args:
            assert field == name
            # TOFIX make it work with not in
            assert operator != "not in", "Do not search message_follower_ids with 'not in'"
            fol_ids = fol_obj.search(cr, SUPERUSER_ID, [('res_model', '=', self._name), ('partner_id', operator, value)])
            if not fol_ids and operator == '=' and value==False:
                fol_ids = fol_obj.search(cr, SUPERUSER_ID, [('res_model', '=', self._name), ('partner_id', '!=', value)])
                res_ids = [fol.res_id for fol in fol_obj.browse(cr, SUPERUSER_ID, fol_ids)]
                res.append(('id', 'not in', res_ids))
            else:
                res_ids = [fol.res_id for fol in fol_obj.browse(cr, SUPERUSER_ID, fol_ids)]
                res.append(('id', 'in', res_ids))
        return res

    _columns = {
        'message_follower_ids': fields.function(_get_followers,fnct_search=_search_followers),
    }

還需要在依賴列表中添加郵件模塊。