How to Dynamically Populate Selection Values in an Odoo 17 Wizard-Tech Vanguard

How to dynamically generate selection field values in an Odoo wizard based on contextual data — such as the record from which the wizard is launched.

This is especially useful in cases where a user needs to pick from a filtered list related to the current model, like selecting layouts for a specific dashboard.

1. Define the Wizard Model

Beginning by creating a TransientModel wizard with a dynamic domain on the layout_select field. This ensures only related layouts are shown based on the dashboard_id. wizard/select_layout.py

from odoo import models, fields, api

class SelectMap(models.TransientModel):
    _name = 'dashboard.select.map.wizard'
    _description = 'Select Layout Wizard'

    dashboard_id = fields.Many2one(
        'indoor.dashboard',
        string="Dashboard Reference",
        required=True
    )

    layout_select = fields.Many2one(
        'indoor.dashboard.layout',
        string='Layout'
    )

    @api.onchange('dashboard_id')
    def _onchange_dashboard_id(self):
        if self.dashboard_id:
            return {
                'domain': {
                    'layout_select': [('dashboard_id', '=', self.dashboard_id.id)]
                }
            }

2. Create the XML View for the Wizard

Define the form view for our wizard in XML. This layout includes the layout_select field and two buttons: View and Cancel. wizard/select_layout.xml

<odoo>
   <record id="view_dashboard_select_map_wizard_wizard_form" model="ir.ui.view">
      <field name="name">view_dashboard_select_map_wizard_wizard_form</field>
      <field name="model">dashboard.select.map.wizard</field>
      <field name="arch" type="xml">
          <form>
              <group>
                  <field name="layout_select"  domain="[('dashboard_id','=', dashboard_id)]"  string="Layout" options="{'no_quick_create':True,'no_create_edit':True}" />
                  <field name="dashboard_id" invisible="1" />
                  
              </group>
              <footer>
                  <button string="View" type="object" name="btn_view" class="btn-primary" />
                  <button string="Cancel" class="btn-secondary" special="cancel" />
              </footer>
          </form>
      </field>
  </record>
</odoo>

3. Open the Wizard from the Main Model

Inside main model (indoor.dashboard), add a method that creates and opens the wizard. This is typically triggered by a button click. models/indoor_dashboard.py

class IndoorDashboard(models.Model):
    _name = 'indoor.dashboard'
    _description = 'Indoor Dashboard Management'

    name = fields.Char(string='Name', required=True, copy=False, readonly=True,
                       default=lambda self: self.env['ir.sequence'].next_by_code('indoor.dashboard.sequence') or 'New')
    
    title = fields.Char(string='Title')

    layout_ids = fields.One2many('indoor.dashboard.layout', 'dashboard_id', string='Layout')

    def btn_view(self):
        self.ensure_one()

        # Create the wizard with dashboard_id pre-filled
        wizard = self.env['dashboard.select.map.wizard'].create({
            'dashboard_id': self.id,
        })

        # Open the wizard with the record ID
        return {
            'type': 'ir.actions.act_window',
            'res_model': 'dashboard.select.map.wizard',
            'view_mode': 'form',
            'target': 'new',
            'res_id': wizard.id,
             'context': {
                    'default_dashboard_id': self.id
                }
        }