Odoo 15: Related fields in an inherit module

Question

I'm trying to inherit Many2one fields ("project and task") in sale.order form view. I can see the fields but I can choose all task in my task field. I want to related it to project field because when I choose a project, I must see only that project's task. Also I want to see  task field just when I choose a project. I tried to do it like this;

class SaleOder(models.Model):
_inherit = "sale.order"
project_id = fields.Many2one(comodel_name="project.project", string="Project")
task_id =fields.Many

Niyas Raphy (Walnut IT) · Accepted Answer

Hi,
Here you have to set domain for the task_id field to filter and show only task related to selected project.

project_id = fields.Many2one( comodel_name = "project.project" , string = "Project" )
task_id = fields.Many2one( comodel_name = "project.task" , string = "Task" , domain = "[('project_id', '=', project_id)]" )
Thanks

Ahlem Mehri · Answer

Hi,
to be able to see only "
that project's task
", you have to add a domain:

for your "
Also I want to see  task field just when I choose a project
":

thanks.

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