Imho in a Tree-View attr functionality does not work since a Tree-View displays several objects. There would be a problem if some of the objects fulfill the attr-domain and some do not.

Its not possible to hide a column only for certain objects.

In Tree view, it doesn't hide a complete column when you use attrs like this

Because, I found it only hides the content in that column. So I tried to using

instead of above one. It hides the complete column in Tree view. I hope it will help you.

If you want to hide a column in the tree view simply look for that column (this is for practice) in the code and add some thing like group=base.group_system for admin configuration login view or base.group_erp_manager for admin access right or base.group_extended for extended view only or base.group_user for all employees. You can also create your own group and add the id of this group to the field

   e.g <field name="you_required_column_id" group="base.group_user"/>

you can add this in the view code for the tree of your module.

<field name="arch" type="xml">
        <tree string="the tree">

            <field name="date_register" group="base.group_system"/>
<!-- this should hide this field from anyone that does not have admin configuration access-->

if you want to hide a column from a specific group a way you can do that is to create a group and add the group to all the other groups by inheritance except the one you don't wish to give access to then add the id of the created field as above.

You can remove a column from a tree view, based on context or other conditions, by overriding fields view get:

    def fields_view_get(self, view_id=None, view_type='tree', toolbar=False, submenu=False):
        result = super(ThisModel, self).fields_view_get(view_id=view_id, view_type=view_type, toolbar=toolbar, submenu=submenu)
        if not self.env.context.get('show_the_column', False) and view_type == 'tree':
            doc = etree.fromstring(result['arch'])
            for field in doc.xpath('//field[@name="name_of_conditional_column"]'):
                field.set('invisible', '1')
                modifiers = json.loads(field.get('modifiers', '{}'))
                modifiers['tree_invisible'] = True
                modifiers['column_invisible'] = True
                field.set('modifiers', json.dumps(modifiers))
            result['arch'] = etree.tostring(doc)
        return result

In order to have tour changes when you do a modification,, you need to upgrade the module and update it..That way you will see the changes, else you wont have any

Hello

I have hide button in tree view using this code and its working fine for me

<button name="%(purchase.act_res_partner_2_supplier_invoices)d" icon="gtk-go-forward" type="action" attrs="{'invisible': ['|',('customer','=',True), ('interger_field','=',0)]}"/>

As far as I know it is possible.. What type of field is your group_name?? It is possible to hide it but if you want to hide it then their is a certain condition that trigger to become visible i think it is not possible.. :D