[FIX] text_element_base - auto-fill model_id on creation via One2many

text_element_accounting/models/account_move.py

@@ -12,7 +12,8 @@ class AccountMove(models.Model):
         domain=["|", ("model", "=", "account.move"), ("model", "=", False)]
     )
     text_element_custom_ids = fields.One2many(
-        domain=["|", ("model", "=", "account.move"), ("model", "=", False)]
+        domain=["|", ("model", "=", "account.move"), ("model", "=", False)],
+        context={"text_element_parent_model": "account.move"},
     )
 
     @api.depends("partner_id", "company_id")

text_element_base/models/text_element_custom.py

@@ -1,7 +1,8 @@
 # Copyright 2009-2023 Noviat
 # License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl).
 
-from odoo import fields, models
+from odoo import api, fields, models
+from odoo.exceptions import ValidationError
 
 
 class TextElementCustom(models.Model):
@@ -19,3 +20,35 @@ class TextElementCustom(models.Model):
     text_element_id = fields.Many2one(
         comodel_name="text.element", string="Text Element"
     )
+
+    @api.model
+    def default_get(self, fields_list):
+        res = super().default_get(fields_list)
+        if "model_id" in fields_list and not res.get("model_id"):
+            parent_model = self.env.context.get(
+                "text_element_parent_model"
+            ) or self.env.context.get("default_res_model")
+            if parent_model:
+                res["model_id"] = self.env["ir.model"]._get_id(parent_model)
+        return res
+
+    @api.model_create_multi
+    def create(self, vals_list):
+        parent_model = self.env.context.get("text_element_parent_model")
+        if parent_model:
+            model_id = self.env["ir.model"]._get_id(parent_model)
+            for vals in vals_list:
+                if not vals.get("model_id"):
+                    vals["model_id"] = model_id
+        return super().create(vals_list)
+
+    @api.constrains("model_id")
+    def _check_model_id(self):
+        for record in self:
+            if not record.model_id:
+                raise ValidationError(
+                    self.env._(
+                        "A custom text element must be linked to a model "
+                        "(field 'Applies to')."
+                    )
+                )

text_element_sale/models/sale_order.py

@@ -12,7 +12,8 @@ class SaleOrder(models.Model):
         domain=["|", ("model", "=", "sale.order"), ("model", "=", False)]
     )
     text_element_custom_ids = fields.One2many(
-        domain=["|", ("model", "=", "sale.order"), ("model", "=", False)]
+        domain=["|", ("model", "=", "sale.order"), ("model", "=", False)],
+        context={"text_element_parent_model": "sale.order"},
     )
 
     @api.depends("partner_id", "company_id")