[MIG] web_m2x_options_manager: Migration to 15.0

- Fix postprocess inherit (removed from v15), and use _postprocess_tag_field
for create/edit options: In v14 it worked with inheriting the "postprocess"
method because in each recursive call it passed a section of the view, in the
way that it went through all the child nodes of the root node, and passed through
the fields, and now in v15 the method "_postprocess_view "it just does the while,
and we never go through the nodes.

- Fix pylint errors: xml-deprecated-tree-attributte, attribute-string-redundant,
translation-positional-used

web_m2x_options_manager/models/ir_ui_view.py

@@ -7,10 +7,10 @@ from odoo import models
 class IrUiView(models.Model):
     _inherit = "ir.ui.view"
 
-    def postprocess(self, node, current_node_path, editable, name_manager):
-        res = super().postprocess(node, current_node_path, editable, name_manager)
+    def _postprocess_tag_field(self, node, name_manager, node_info):
+        res = super()._postprocess_tag_field(node, name_manager, node_info)
         if node.tag == "field":
-            mname = name_manager.Model._name
+            mname = name_manager.model._name
             fname = node.attrib["name"]
             field = self.env[mname]._fields.get(fname)
             if field and field.type in ("many2many", "many2one"):

web_m2x_options_manager/models/m2x_create_edit_option.py

@@ -36,7 +36,6 @@ class M2xCreateEditOption(models.Model):
         compute="_compute_model_name",
         inverse="_inverse_model_name",
         store=True,
-        string="Model Name",
     )
 
     option_create = fields.Selection(
@@ -125,8 +124,12 @@ class M2xCreateEditOption(models.Model):
     def _check_field_in_model(self):
         for opt in self:
             if opt.field_id.model_id != opt.model_id:
-                msg = _("'%s' is not a valid field for model '%s'!")
-                raise ValidationError(msg % (opt.field_name, opt.model_name))
+                msg = _(
+                    "%(field)s is not a valid field for model %(model)s!",
+                    field=opt.field_name,
+                    model=opt.model_name,
+                )
+                raise ValidationError(msg)
 
     @api.constrains("field_id")
     def _check_field_type(self):