[REF] mrp_attachment_mgmt: Avoid code duplication for attachment view

- Put the method on product, and call it from all the places.
- Remove excessive method fragmentation w/o gain.
- Replace action read by proper `_for_xml_id` call.

mrp_attachment_mgmt/models/mrp_bom.py

@@ -1,4 +1,5 @@
 # Copyright 2022 Tecnativa - Víctor Martínez
+# Copyright 2023 Tecnativa - Pedro M. Baeza
 # License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
 from odoo import api, models
 
@@ -6,22 +7,6 @@ from odoo import api, models
 class MrpBom(models.Model):
     _inherit = "mrp.bom"
 
-    def _action_see_bom_documents_products(self, products):
-        domain = [
-            # ("res_field", "=", False),
-            "|",
-            "&",
-            ("res_model", "=", "product.product"),
-            ("res_id", "in", products.ids),
-            "&",
-            ("res_model", "=", "product.template"),
-            ("res_id", "in", products.mapped("product_tmpl_id").ids),
-        ]
-        res = self.env.ref("base.action_attachment").read()[0]
-        ctx = {"create": False, "edit": False}
-        res.update({"domain": domain, "context": ctx})
-        return res
-
     @api.model
     def _get_components_ids(self, product_tmpl=None, product=None, recursive=False):
         """Gets an objet with the ids of the components, within two arrays:
@@ -40,12 +25,9 @@ class MrpBom(models.Model):
                 product_ids.extend(subcomponents)
         return product_ids
 
-    def _action_see_bom_documents(self, product_tmpl=None, product=None):
-        product_ids = self._get_components_ids(product_tmpl, product, True)
-        products = self.env["product.product"].search([("id", "in", product_ids)])
-        return self._action_see_bom_documents_products(products)
-
     def action_see_bom_documents(self):
-        return self._action_see_bom_documents(
-            product_tmpl=self.product_tmpl_id, product=self.product_id
+        product_ids = self._get_components_ids(
+            self.product_tmpl_id, self.product_id, True
         )
+        products = self.env["product.product"].search([("id", "in", product_ids)])
+        return products._action_show_attachments()

mrp_attachment_mgmt/models/mrp_workorder.py

@@ -1,4 +1,5 @@
 # Copyright 2021 Tecnativa - Víctor Martínez
+# Copyright 2023 Tecnativa - Pedro M. Baeza
 # License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
 from odoo import _, models
 from odoo.exceptions import UserError
@@ -7,20 +8,6 @@ from odoo.exceptions import UserError
 class MrpWorkorder(models.Model):
     _inherit = "mrp.workorder"
 
-    def _action_see_workorder_attachments_products(self, products):
-        domain = [
-            "|",
-            "&",
-            ("res_model", "=", "product.product"),
-            ("res_id", "in", products.ids),
-            "&",
-            ("res_model", "=", "product.template"),
-            ("res_id", "in", products.mapped("product_tmpl_id").ids),
-        ]
-        action = self.env.ref("base.action_attachment").read()[0]
-        action.update({"domain": domain})
-        return action
-
     def action_see_workorder_attachments(self):
         error = []
         for product in self.mapped("product_id"):
@@ -33,6 +20,4 @@ class MrpWorkorder(models.Model):
             raise UserError(
                 _("%d Product(s) without drawing:\n%s") % (len(error), "\n".join(error))
             )
-        return self._action_see_workorder_attachments_products(
-            self.mapped("product_id")
-        )
+        return self.product_id._action_show_attachments()

mrp_attachment_mgmt/models/product.py

@@ -1,4 +1,5 @@
 # Copyright 2022 Tecnativa - Víctor Martínez
+# Copyright 2023 Tecnativa - Pedro M. Baeza
 # License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
 from odoo import fields, models
 
@@ -7,13 +8,28 @@ class ProductTemplate(models.Model):
     _inherit = "product.template"
 
     def action_see_bom_documents(self):
-        first_bom = fields.first(self.bom_ids)
-        return first_bom._action_see_bom_documents(self)
+        return fields.first(self.bom_ids).action_see_bom_documents()
 
 
 class ProductProduct(models.Model):
     _inherit = "product.product"
 
     def action_see_bom_documents(self):
-        first_bom = fields.first(self.bom_ids)
-        return first_bom._action_see_bom_documents(self.product_tmpl_id, self)
+        return fields.first(self.bom_ids).action_see_bom_documents()
+
+    def _action_show_attachments(self):
+        """Returns the action to show the attachments linked to the products
+        recordset or to their templates.
+        """
+        domain = [
+            "|",
+            "&",
+            ("res_model", "=", "product.product"),
+            ("res_id", "in", self.ids),
+            "&",
+            ("res_model", "=", "product.template"),
+            ("res_id", "in", self.product_tmpl_id.ids),
+        ]
+        action = self.env["ir.actions.actions"]._for_xml_id("base.action_attachment")
+        action.update({"domain": domain})
+        return action