[IMP] beesdoo_account: check if user has group AND amount is < 0

beesdoo_account/models/account_invoice.py

@@ -1,4 +1,5 @@
 from odoo import api, fields, models, _
+from odoo.tools import float_compare
 from odoo.exceptions import UserError
 
 
@@ -7,16 +8,23 @@ class AccountInvoice(models.Model):
 
     @api.multi
     def action_invoice_open(self):
+        to_open_invoices = self.filtered(lambda inv: inv.state != "open")
         if self.user_has_groups(
             "beesdoo_account." "group_validate_invoice_negative_total_amount"
+        ) and to_open_invoices.filtered(
+            lambda inv: float_compare(
+                inv.amount_total,
+                0.0,
+                precision_rounding=inv.currency_id.rounding,
+            )
+            == -1
         ):
-            return self.action_invoice_negative_amount_open()
+            return self.action_invoice_negative_amount_open(to_open_invoices)
         return super(AccountInvoice, self).action_invoice_open()
 
     @api.multi
-    def action_invoice_negative_amount_open(self):
-        """Identical to action_invoice_open without UserError on an invoice with a negative total amount"""
-        to_open_invoices = self.filtered(lambda inv: inv.state != "open")
+    def action_invoice_negative_amount_open(self, to_open_invoices):
+        """Similar to action_invoice_open without UserError on an invoice with a negative total amount"""
         if to_open_invoices.filtered(lambda inv: not inv.partner_id):
             raise UserError(
                 _(