ValueError应为singleton many2many字段

Question

professor class

｛#--编码：utf-8--从odoo导入字段、模型、api从日期时间导入日期时间

class GiProfesseur(models.Model):
_name = "gi.professeur"
_inherit = ['mail.thread']
_description = "Professeur du département de Genie Industriel"
_rec_name = 'combination'
nom = fields.Char(string='Nom', required=True)
prenom = fields.Char(string='Prenom', required=True)
numero_de_carte_nationale = fields.Char(string='Numéro de carte nationale',     required=True)
sexe = fields.Selection([('Masculin','Masculin'),('Féminin','Féminin')], required=True)
date_de_naissance = fields.Date('Date de naissance' , required=True)
Wilaya_de_residence = fields.Char(string='Wilaya de naissance', required=True)
adresse = fields.Text(string='Adresse')
specialite = fields.Many2many('gi.specialite', string="Spécialité", required=True)
classroom = fields.Many2many('gi.classroom', string="Groupe")
grade = fields.Char(string='Grade',)
position = fields.Text(string='Position')
date_recruitment = fields.Date("Date de recruitment", required=True, readonly=True, default=datetime.now().date())
adresse_Email = fields.Text(string='Adresse E-mail', required=True)
telephone = fields.Char(string='Téléphone', required=True)
image = fields.Binary(string='Image')
combination = fields.Char(string='Combination', compute='_compute_fields_combination')
@api.depends('nom', 'prenom')
def _compute_fields_combination(self):
for Professeur in self:
Professeur.combination = Professeur.nom + ' ' + Professeur.prenom}

classroom class

｛#--编码：utf-8--从odoo导入字段、模型、api、_

class GiClass(models.Model):
_name = "gi.classroom"
_inherit = ['mail.thread']
_description = "les classroom du département de Genie Industriel"
_rec_name = 'nom'
nom = fields.Char(string='Code du grupe', required=True)
etudiants = fields.One2many('gi.etudiant', 'classroom', string='Etudiants')
professeurs = fields.One2many('gi.professeur', 'classroom', string='Professeurs')
cours = fields.One2many('gi.cours', 'classroom', string='Etudiants')
examens = fields.One2many('gi.cours', 'classroom', string='Examens')
num = fields.Char(string='Numéro du classroom', required=True)}

当我在教授班上增加两到三个教室时

classroom = fields.Many2many('gi.classroom', string="Groupe")

我收到这个错误

ValueError: Expected singleton: gi.classroom(12, 13)

Answer 1

在gi.professeur模型中：您希望与gi.classroom有许多关系。

但在您的gi.classroom模型中：您与gi.professeur有任何关系。

---

要使其一致，您必须更改

professeurs = fields.One2many('gi.professeur', 'classroom', string='Professeurs')

至

professeurs = fields.Many2many('gi.professeur', 'classroom', string='Professeurs')

在您的gi.classroom模型中。

或

更改

classroom = fields.Many2many('gi.classroom', string="Groupe")

至

classroom = fields.Many2one('gi.classroom', string="Groupe")

在您的gi.professeur模型中。

Tl；博士

您必须使gi.classroom和gi.professeur的关系保持一致。