In the Python model, create a computed field that checks if the current user is in the specified group.

from odoo import models, fields

class YourModel(models.Model):

    _name = 'your.model'

    # Other fields

    item_line_ids = fields.One2many('item.line', 'your_model_id')

    is_not_in_group = fields.Boolean(compute='_compute_is_not_in_group', store=False)

    def _compute_is_not_in_group(self):

        for record in self:

            # Replace 'your_module.group_name' with the actual external ID of your group

            record.is_not_in_group = not self.env.user.has_group('your_module.group_name')

Thanks it works for me, I was trying to avoid computed fields but after some research I think is the solution.

You can create a new computed field which will be a boolean type.  This field will compute whether the user belongs to that group or not. Use this field in the read-only attribute of any field.

Hi,

To make a field read-only for users who do not belong to a specified group:

is_boolean_field = fields.Boolean(compute="_compute_is_boolean_field")

def _compute_is_boolean_field(self):

        for record in self:

            if not record.env.user.has_group("Provide the group that you want the restriction"):

                 record.is_boolean_field = True

            else:

                record.is_boolean_field = False

xml:

<page string="Item">

    <field name="item_line_ids">

        <tree editable="bottom">

            <field name="document_name" column_invisible="True"/>

            <field name="name"  readonly="True"/>

            <field name="number_of_pages" readonly="True"/>

            <field name="document" widget="binary" filename="document_name"/>

            <field name="state"/>

            <field name="comment"

                   readonly="is_boolean_field == True"/>

        </tree>

    </field>

</page>

Hope it helps