Odoo 10 - Form view opened in edit mode - odoo

Question

I'm developing on Odoo 10.
I created a dynamic form view which search and display a product from its barcode, but I've got a problem.
Since the view has no initial record to display it is opened in edit mode, and that's ok, because I want to type the 'barcode' field.
But, after the product is displayed, when I exit from that view the 'can_be_discarded' function is fired, opening the confirm dialog.
Have I to create a new view type inheriting from FormView or is there a way to workaround this problem?
The view is a classic form view, with nothing special.
Here's the server code instead.
class ProductFromBarcode(models.TransientModel):
_name = 'levelprime_product_general_status.product_from_barcode'
_inherits = { 'product.product': 'product_id' }
product_id = fields.Many2one(
comodel_name='product.product',
store=False)
product_barcode = fields.Integer(help='Insert the barcode to search '
'the correspondent product',
store=False)
#api.onchange('product_barcode')
def on_barcode_changed(self):
if self.product_barcode != 0:
self.product_id = self.get_product_from_barcode(self.product_barcode)
#api.model
def get_product_from_barcode(self, barcode):
r = self.env['product.product'].search([('barcode', '=', barcode)])
if r:
return r

Answer 1

Ok, I think I'm in the right way, there are some rendering problem to solve, but the main behavior is what I was searching for.
I created a new type of view which inherit from the 'FormView' one and override the 'can_be_discarded' method to not execute controls about the data changes.
JS
odoo.define('levelprime_product_general_status.readonly_formview', function(require) {
'use strict'
var core = require('web.core')
var FormView = require('web.FormView')
var ReadOnly_FormView = FormView.extend({
init: function() {
this._super.apply(this, arguments)
},
start: function() {
this._super.apply(this, arguments)
},
can_be_discarded: function() {
return $.Deferred().resolve()
}
})
core.view_registry.add('readonly_form', ReadOnly_FormView)
return ReadOnly_FormView
})
PY
class ViewExtension(models.Model):
_inherit = 'ir.ui.view'
type = fields.Selection(selection_add=[
('readonly_form', 'ReadOnly Form Version')])
Then you can simply use the tag in the xml.

Answer 2

You have used _inherits = { 'product.product': 'product_id' } in your wizard.
When using _inherits you will do a kind of polymorphic model in the database way.
For example product.product inherits product.template or res.users inherits res.partner.
This mean we create a model that gets the know how of a Model but adds aditional data/columns in a new database table. So when you create a user, all partner data is stored in res_partner table (and a partner is created) and all user related info is stored in res_users table.
In your code when wizard (levelprime_product_general_status.product_from_barcode) record will create then all product.product/product.template fields are required,due to that reason you are getting this type of error.
You can check difference between _inherit & _inherits from following link.
https://www.odoo.com/forum/how-to/developers-13/the-different-openerp-model-inheritance-mechanisms-what-s-the-difference-between-them-and-when-should-they-be-used-46
You need to follow following code.
class ProductFromBarcode(models.TransientModel):
_name = 'levelprime_product_general_status.product_from_barcode'
product_id= fields.Many2one(comodel_name='product.product',string="Product")
product_barcode = fields.Char(help='Insert the barcode to search '
'the correspondent product',
"Barcode")
#api.onchange('product_barcode')
def on_barcode_changed(self):
if self.product_barcode:
self.product_id = self.get_product_from_barcode(self.product_barcode)
#api.model
def get_product_from_barcode(self,barcode):
r = self.env['product.product'].search([('barcode', '=', barcode)])
if r:
return r
else:
return False
In above code just create wizard & add two fields.
This may help you.

Answer 3

from what you are saying you are using inherits to show the information of the product selected by the barcode remove it and use related field:
add the fields that you are showing on the form view to you model
name = fields.Char(related='product_id.name', readonly=True)
Now you can use name on your view it's like compute field or proxy.
you can make them readonly if you want to display them.