Hi everyone,

I’m on Odoo 17 and I created a very simple custom widget that extends CharField and renders a plain <input>.

The widget works in isolation, but when I use it like this:

<field name="father_name" widget="reusable_input"/>

the form crashes with:

OwlError: Cannot read properties of undefined (reading 'name')
    at InnerGroup.template

If I remove the widget attribute (or remove the field entirely), the form loads normally.

Here is the widget:

import { registry } from "@web/core/registry";
import { CharField } from "@web/views/fields/char/char_field";

export class ReusableInput extends CharField {
    onInput(ev) {
        this.props.update(ev.target.value);
    }
}

ReusableInput.template = "school_fee_management.reusable_input";
registry.category("fields").add("reusable_input", ReusableInput);

And the template:

<t t-name="school_fee_management.reusable_input">
    <input type="text"
           t-att-value="props.value"
           t-on-input="onInput"/>
</t>

XML:

<group string="Parent Contact">
    <field name="father_name" widget="reusable_input"/>
    <field name="phone"/>
</group>

Has anyone seen this InnerGroup error when using custom widgets in Odoo 17?

What extra metadata or props does the widget need so InnerGroup doesn’t break?

Thanks in advance.