Hi.

The solution is:

In the file /addons/web/static/src/js/view_form.js

Replace the lines:

if (! no_recurse) {
        var dataset = new instance.web.DataSetStatic(this, this.field.relation, self.build_context());
        this.alive(dataset.name_get([self.get("value")])).done(function(data) {
            self.display_value["" + self.get("value")] = data[0][1];
            self.render_value(true);
        });
    }

By:

if (! no_recurse) {
        var dataset = new instance.web.DataSetStatic(this, this.field.relation, self.build_context());
        this.alive(dataset.name_get([self.get("value")])).done(function(data) {
            if(typeof data[0] != "undefined" && data[0] != null && data[0].length > 0){
                self.display_value["" + self.get("value")] = data[0][1];
                self.render_value(true);
            }
            else {
               return false;
            }
        });

}

Usually this error comes when you try to pass an non existing id to a many2many/many2one field.

This error occurs in Chrome Browser when you read a property or call a method on an undefined object . Uncaught TypeError: Cannot read property of undefined error is probably easiest to understand from the perspective of undefined, since undefined is not considered an object type at all (but its own undefined type instead), and properties can only belong to objects within JavaScript. There are a few variations of this error depending on the property you are trying to access. Sometimes instead of undefined it will say null.

http://net-informations.com/js/iq/unerror.htm

You could get the real reason with a small js print to debug.

Go to \addons/web/static/src/js/view_form.js#L533  and add the following lines:

console.log("FIELDNAME "+fieldname);
console.log(self.fields);

After reproduce the error and then check on your browser developer tools console to see the problem.

For chrome use right-click and inspect option and see the console.

Answer by @oscarolar

If using nginx, read this post >>

http://www.developpez.net/forums/d1498867/logiciels/solutions-d-entreprise/erp/odoo-ex-openerp/v8-importation-csv-error-cannot-read-property-1-of-undefined/

I am also getting this same error when creating a new product from the point of sale menu. When I create a new product from anywhere else (like purchase menu) I do not get this error.

It happens for all users for me.

I have tried setting defaults in debug mode but that doesn't seem to find this 'undefined ' field.

The only thing I might be able to attribute this to is deleting the others category from point of sale categories (but it recreates it automatically).

This is happening also with my when I access the Products form and click on Create. Following the instructions I found 5 property values on product form: 3 for stock counter parts (property_stock_procurement, property_stock_production and property_stock_inventory) and 2 for accounting (property_account_income and property_account_expense). All 5 property values are defined on settings / parameters / configuration parameters. Any idea please?

I am getting this error when trying to add a customer invoice. The error appears when I try to add an invoice line, it gives this error and does not allow me to add an invoice line.

I checked the property fields as suggested and all fields seems to be there. The system is a fresh install with a custom chart of accounts. Account payable and receivable are available for the customer. Also income and expense accounts are available for the product.

Please help.

UPDATE: The issue is now fixed. There was not default account set for the generic properties of receivable, payable, expense and income accounts. Thank you so much for your help.