Hello everyone, I hope you are well.

I am trying to code groups in a custom way, looking for this group to have access to the Purchase button of the Contacts form view. For now I have the following group associated with the Purchases category:

       record id="group_custom_purchase_order_user" model="res.groups"

            field name="name" Usuario (Ventas) /field

            field name="category_id" ref="base.module_category_inventory_purchase" /

       /record

And its associated permissions, which is only one to consult the purchase order model:

id,name,model_id:id,group_id:id,perm_read,perm_write,perm_create,perm_unlink

access_custom_purchase_user,access custom purchase user,purchase.model_purchase_order,group_custom_purchase_order_user,1,0,0,0

I try to assign the view for the group as follows:

      record id="view_partner_form_purchase_custom" model="ir.ui.view"

            field name="name" res.partner.form.purchase.custom /field

            field name="model" res.partner /field

            field name="inherit_id" ref="purchase.res_partner_view_purchase_buttons" /

            field name="groups_id" eval="[(4, ref('customer_roles.group_custom_purchase_order_user'))]"/

      /record

But when compiling the module, it gives me the following error:

Traceback (most recent call last):

  File "/home/odoo/src/odoo/odoo/modules/registry.py", line 87, in new

    odoo.modules.load_modules(registry, force_demo, status, update_module)

  File "/home/odoo/src/odoo/odoo/modules/loading.py", line 470, in load_modules

    processed_modules += load_marked_modules(cr, graph,

  File "/home/odoo/src/odoo/odoo/modules/loading.py", line 363, in load_marked_modules

    loaded, processed = load_module_graph(

  File "/home/odoo/src/odoo/odoo/modules/loading.py", line 244, in load_module_graph

    env['ir.ui.view']._validate_module_views(module_name)

  File "/home/odoo/src/odoo/odoo/addons/base/models/ir_ui_view.py", line 2087, in _validate_module_views

    view._check_xml()

  File "/home/odoo/src/odoo/odoo/addons/base/models/ir_ui_view.py", line 428, in _check_xml

    view_arch = etree.fromstring(view.arch)

  File "src/lxml/etree.pyx", line 3235, in lxml.etree.fromstring

  File "src/lxml/parser.pxi", line 1876, in lxml.etree._parseMemoryDocument

  File "src/lxml/parser.pxi", line 1757, in lxml.etree._parseDoc

  File "src/lxml/parser.pxi", line 1068, in lxml.etree._BaseParser._parseUnicodeDoc

  File "src/lxml/parser.pxi", line 601, in lxml.etree._ParserContext._handleParseResultDoc

  File "src/lxml/parser.pxi", line 711, in lxml.etree._handleParseResult

  File "src/lxml/parser.pxi", line 640, in lxml.etree._raiseParseError

  File "", line 1

lxml.etree.XMLSyntaxError: Document is empty, line 1, column 1

If anyone can help me associate the views with a custom group, I would be super grateful. And any support material for this purpose would also be ideal.

PDT: I had to delete the opening and closing of each xml tag because the post was not taking the content well