Hello,

my goal is to add a new model that holds new data for some categories. Not all categories needs this data. So I think inherit is not the right way, becouse if I use inheritance, every time I create a new category it will create a new row in my osc_product_category table with empty data. I want that a new row is created only when e.g. osc_category_id is set.

I want that all the new fields are shown in the product categories form. But it's not working.

class osc_product_category(osv.osv):
    _name = 'osc.product.category'
    _description = "osCommerce Product Category"

    _columns = {
        'product_category_id': fields.many2one('product.category', 'Product Category', ondelete="cascade", select=True),
        'osc_category_id': fields.integer('osCommerce Category Id'),
        ...
    }

osc_product_category()

.

<record id="nfx_oscommerce_product_category_form_view" model="ir.ui.view">
    <field name="name">nfx_oscommerce.product.category.form</field>
    <field name="model">osc.product.category</field>
    <field name="inherit_id" ref="product.product_category_form_view"/>
    <field name="arch" type="xml">

        <xpath expr="//form/sheet" position="inside">
            <notebook>
                <page string="osCommerce">
                    <group>
                        <group>
                            <field name="osc_category_id"/>
                            ...
                        </group>
                    </group>
                </page>
            </notebook>
        </xpath>

    </field>
</record>

I get an exception that parent_id was not found... I don't understand why. parent_id is in product.category. I don't need it in my osc.product.category.

How can I inherit a view and add fields from another model?