Getting mixing apples and oranges error while inheriting res.users - odoo

Question

I am trying to inherit res.users in odoo 12. But I am getting mixing apples and oranges error. I want to create a new table having the fields of res.users models.
model.py
class SaleIndividual(models.Model):
_name = 'sale.individual'
_inherit = 'res.users'
individual_description = fields.Char()
view.xml
<odoo>
<record id="view_form_sale_custom_individual" model="ir.ui.view">
<field name="name">Individual Form</field>
<field name="model">sale.individual</field>
<field name="inherit_id" ref="auth_signup.res_users_view_form"/>
<field name="arch" type="xml">
<field name="login" position="after">
<field name="individual_description" />
</field>
</field>
</record>
</odoo>
error:
raise TypeError("Mixing apples and oranges: %s in %s" % (item, self))
TypeError: Mixing apples and oranges: sale.individual(<odoo.models.NewId object at 0x123018048>,) in res.users()

Answer 1

First Method:
If you want t inherit res users then please follow the below steps:
class ResUsers(models.Model):
_inherit = 'res.users'
individual_description = fields.Char()
view.xml
<odoo>
<record id="view_form_sale_custom_individual" model="ir.ui.view">
<field name="name">Individual Form</field>
<field name="model">res.users</field>
<field name="inherit_id" ref="auth_signup.res_users_view_form"/>
<field name="arch" type="xml">
<field name="login" position="after">
<field name="individual_description" />
</field>
</field>
Second Method:
if you want create new model then follow the steps below:
class SaleIndividual(models.Model):
_name = 'sale.individual'
_inherit = 'res.users'
individual_description = fields.Char()
Need to create a new view file with out inheriting res users view file for this case.
<odoo>
<record id="view_form_sale_custom_individual" model="ir.ui.view">
<field name="name">Individual Form</field>
<field name="model">sale.individual</field>
<field name="arch" type="xml">
<form>
<field name="individual_description" />
</form>
</field>