Odoo Server Error Expected singleton: gc.level(24, 25) for One2many field

one2many odoo12

2 Svar

6048 Vyer

Geraldine Maba

When I select 2 values in my one2many fields, i get this error. How can i correct it?

This is my code

class Level(models.Model):
    _name = 'gc.level'

    name = fields.Char(string='Degree', required=True)
    note = fields.Integer(string="Note", required=True)
    description = fields.Text(string="Description")
    critere_id = fields.Many2one('gc.criteria', string="Criteria")



class Criteria(models.Model):
    _name = 'gc.criteria'

    name = fields.Char(string='Critère', required=True)
    levels_ids = fields.One2many('gc.level', 'critere_id', string="Degree")

Cybrosys Techno Solutions Pvt.Ltd

Bästa svar

Hi,

Please try following code,
Models → .py file

from odoo import models, fields


class Level(models.Model):
    _name = 'gc.level'
    name = fields.Char(string='Degree', required=True)
    note = fields.Integer(string="Note", required=True)
    description = fields.Text(string="Description")
    critere_id = fields.Many2one('gc.criteria', string="Criteria")


class Criteria(models.Model):
    _name = 'gc.criteria'
    name = fields.Char(string='Critère')
    levels_ids = fields.One2many('gc.level', 'critere_id', string="Degree")

Views → .xml file

<?xml version="1.0" encoding="utf-8"?>
<odoo>
    <data>
        <record id="view_gc_criteria_form" model="ir.ui.view">
            <field name="name">gc.criteria.form</field>
            <field name="model">gc.criteria</field>
            <field name="arch" type="xml">
                <form>
                    <sheet>
                        <field name="name"/>
                        <div>
                            <group>
                                <field name="levels_ids">
                                    <field name="name"/>
                                    <field name="note"/>
                                    <field name="description"/>
                                    <field name="critere_id" invisible="1"/>
                                </field>
                            </group>
                        </div>
                    </sheet>
                </form>
            </field>
        </record>
        <record id="gc_criteria_tree_view" model="ir.ui.view">
            <field name="name">gc.criteria.tree</field>
            <field name="model">gc.criteria</field>
            <field eval="8" name="priority"/>
            <field name="arch" type="xml">
                <tree string="Test Email">
                    <field name="name" string="Reference"/>
                    <field name="levels_ids"/>
                </tree>
            </field>
        </record>
        <record id="action_gc_criteria_form" model="ir.actions.act_window">
            <field name="name">Gc Criteria</field>
            <field name="res_model">gc.criteria</field>
            <field name="view_mode">tree,kanban,form</field>
        </record>
        <menuitem action="action_gc_criteria_form" name="Gc Criteria"
                  id="menu_action_gc_criteria" string="Gc Criteria" parent="parent_module.menu_id" sequence="4"/>
    </data>
</odoo>

Security → .csv file

id,name,model_id:id,group_id:id,perm_read,perm_write,perm_create,perm_unlink
access_gc_criteria,test_email.gc_criteria,model_gc_criteria,base.group_user,1,1,1,1
access_gc_level,test_email.gc_level,model_gc_level,base.group_user,1,1,1,1

Regards

Prakash

Based on above error example,

record = gc.level(24, 25) //gc.level object multiple records. if you cannot access directly object.name

print(record.name ) // Cannot get value in that case Singleton Error throw.

Solution to fix:

record = gc.level(24, 25)

for rec in record:

print("Name", rec.name)

Check you code if any validation applied, for multiple records value access use for loop to avoid singleton error.

Njuter du av diskussionen? Läs inte bara, delta också!

Skapa ett konto idag för att ta del av exklusiva funktioner och engagera dig i vår fantastiska community!

Registrera dig

Relaterade inlägg	Svar	Vyer
Access One2many fields values? one2many odoo12	1 sep. 23	5649
The operation cannot be completed: - Create/update: a mandatory field is not set. - Delete: another model requires the record being deleted. If possible, archive it instead. Model: Pemesanan Bahan Detail (restaurant.pemesanan_bahan_detail), Field: Bahan (bahan_id one2many odoo12	1 sep. 21	29063
How to sum column for each section in One2many field one2many sum odoo12	1 jan. 23	4580
Getting self records for the current model. Löst one2many records odoo12	1 juni 22	8844
How to implement search box in odoo12 One2many tree view? form one2many odoo12	1 juni 22	4815

Denna fråga har flaggats

Njuter du av diskussionen? Läs inte bara, delta också!