How can I add a chatter for many2many fields (tags) in Odoo 16?

I want to add chatter for Tags. But odoo does not support tracking of many2many fields. What should i do?

Any Suggestions.

I tried to put tracking=true on tag_ids field but it does not work.

I am stuck here. Please give your suggestions.

You can override the _track_mail function to track x2many fields.

Check the code just after # Many2many tracking comment in the project module

Example:

if len(changes) > len(tracking_value_ids):
    for changed_field in changes:
        if tracked_fields[changed_field]['type'] in ['one2many', 'many2many']:
            field = self.env['ir.model.fields']._get(self._name, changed_field)
            vals = {
                'field': field.id,
                'field_desc': field.field_description,
                'field_type': field.ttype,
                'tracking_sequence': field.tracking,
                'old_value_char': ', '.join(initial_values[changed_field].mapped('name')),
                'new_value_char': ', '.join(self[changed_field].mapped('name')),
            }
            tracking_value_ids.append(Command.create(vals))