[IMP] fleet: Make the image readonly on the vehicle and model

Currently when user change the image on a vehicle, it change it
for the car manufacturer and the goal of this image is to recognize
the manufacturer of the vehicle.

After this commit is applied, the model and vehicle image will be
fixed as per the selected brand image. user will not be able to
change from the vehicle and model.

closes odoo/odoo#44153

Taskid: 2168922
Closes: #44153
Signed-off-by: Yannick Tivisse (yti) <yti@odoo.com>

addons/fleet/models/fleet_vehicle.py

@@ -78,7 +78,7 @@ class FleetVehicle(models.Model):
     horsepower_tax = fields.Float('Horsepower Taxation')
     power = fields.Integer('Power', help='Power in kW of the vehicle')
     co2 = fields.Float('CO2 Emissions', help='CO2 emissions of the vehicle')
-    image_128 = fields.Image(related='model_id.image_128', readonly=False)
+    image_128 = fields.Image(related='model_id.image_128', readonly=True)
     contract_renewal_due_soon = fields.Boolean(compute='_compute_contract_reminder', search='_search_contract_renewal_due_soon',
         string='Has Contracts to renew', multi='contract_info')
     contract_renewal_overdue = fields.Boolean(compute='_compute_contract_reminder', search='_search_get_overdue_contract_reminder',

addons/fleet/models/fleet_vehicle_model.py

@@ -14,7 +14,7 @@ class FleetVehicleModel(models.Model):
     vendors = fields.Many2many('res.partner', 'fleet_vehicle_model_vendors', 'model_id', 'partner_id', string='Vendors')
     manager_id = fields.Many2one('res.users', 'Fleet Manager', default=lambda self: self.env.uid,
                                  domain=lambda self: [('groups_id', 'in', self.env.ref('fleet.fleet_group_manager').id)])
-    image_128 = fields.Image(related='brand_id.image_128', readonly=False)
+    image_128 = fields.Image(related='brand_id.image_128', readonly=True)
     active = fields.Boolean(default=True)
 
     @api.depends('name', 'brand_id')