sorry, but my message was truncated.

I'd like a boolean_toggle field that is set to true if warranty date - current date is less than 2 years.

You can try something like this:

1. define your field:

from odoo.tools import relativedelta

toggle_field = fields.Boolean(string="Your Toggle field", compute="_compute_toggle_field", store=True)

2. Create a compute method for your field

@api.depends("warranty_date")

def _compute_toggle_field(self):

​for r in self:

​ ​if r.warranty_date and (r.warranty_date - fields.Date.today()

​ ​ ​r.toggle_field = True

​ ​else:

​ ​ ​r.toggle_field = False

3. Finally bring your field to the xml file

Hope this help