[ADD]mandates_bank_accounts_portal

partner_bank_account_portal/models/__init__.py

@@ -0,0 +1,2 @@
+
+from . import res_partner_bank

partner_bank_account_portal/models/res_partner_bank.py

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+# Copyright 2022 Elabore (https://elabore.coop)
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).
+
+from odoo import fields, models
+
+class res_partner_bank(models.Model):
+    _inherit = "res.partner.bank"
+
+    #count all mandate linked to the IBAN, even draft or canceled mandates
+    associated_mandate_count = fields.Integer("Associated mandate count", compute="_compute_associated_mandate_count")
+
+    def _compute_associated_mandate_count(self):
+        for record in self:
+            count = self.env["account.banking.mandate"].search_count(
+                [("partner_bank_id", "=", record.id)]
+            )
+            record.associated_mandate_count = count