Hi Hery,

You can refer to this:

in V16

<field name="categ_ids" attrs="{'invisible': [('categ_ids', '=', [])]}"/>

in V17

<field name="categ_ids" invisible="not categ_ids" options="{'icon': 'fa fa-tag', 'color_field': 'color'}"/>

Hope it helps

try this way:

field name="your_field_name" invisible="['|', ('assignment_ids', '=', False), ('assignment_ids', '=', [(6, 0, [])])]"/>

In Odoo 17, the equivalent attribute for attrs="{'invisible': [('one2many_field', '=', [])]}" is attrs="{'invisible': [('one2many_field', '=', [(6, 0, [])])]}". This notation (6, 0, []) represents an empty list for a one2many field.