[14.0][FIX] payment_environment: Fix state usage

As state field is now managed as server environment fields, the field is considered as a computed fields.
Then, we need to define a custom search function to be able to search on this field.

payment_environment/models/payment_acquirer.py

@@ -2,7 +2,8 @@
 # @author Iván Todorovich <ivan.todorovich@gmail.com>
 # License LGPL-3.0 or later (https://www.gnu.org/licenses/lgpl.html)
 
-from odoo import models
+from odoo import fields, models
+from odoo.osv import expression
 
 
 class PaymentAcquirer(models.Model):
@@ -21,3 +22,29 @@ class PaymentAcquirer(models.Model):
         }
         acquirer_fields.update(base_fields)
         return acquirer_fields
+
+    state = fields.Selection(
+        search="_search_state",
+    )
+
+    def _search_state(self, operator, value):
+        """
+        As state field is now managed as server environment fields,
+        the field is considered as a computed fields.
+        Then, we need to define a custom search function
+        to be able to search on this field.
+
+        We don't want to cover all cases,
+        just search implemented in core function
+        to display the acquirers when generating the payment link.
+
+        See module payment in controller/portal.py function pay()
+
+        Used domain is: ('state', 'in', ['enabled', 'test'])
+        """
+        if operator == "in" and isinstance(value, list):
+            valid_acquirers = self.search([]).filtered_domain([("state", "in", value)])
+            if valid_acquirers:
+                return [("id", "in", valid_acquirers.ids)]
+
+        return expression.FALSE_DOMAIN