Add oca-purchase submodule with 96 purchase modules moved from oca-workflow-process

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

odoo-bringout-oca-purchase-workflow-purchase_security/purchase_security/models/purchase_order.py

@@ -0,0 +1,54 @@
+# © 2023 Solvos Consultoría Informática (<http://www.solvos.es>)
+# Copyright 2023 Tecnativa - Stefan Ungureanu
+# Copyright 2023 Tecnativa - Pedro M. Baeza
+# Copyright 2024 Tecnativa - Víctor Martínez
+# License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl).
+
+from odoo import api, fields, models
+
+
+class PurchaseOrder(models.Model):
+    _inherit = "purchase.order"
+
+    is_user_id_editable = fields.Boolean(
+        compute="_compute_is_user_id_editable",
+    )
+    team_id = fields.Many2one(
+        "purchase.team",
+        string="Team",
+        index=True,
+        auto_join=True,
+        compute="_compute_team_id",
+        store=True,
+        readonly=False,
+    )
+
+    def _compute_is_user_id_editable(self):
+        is_user_id_editable = self.env.user.has_group(
+            "purchase.group_purchase_manager"
+        ) or not self.env.user.has_group("purchase_security.group_purchase_own_orders")
+        self.is_user_id_editable = is_user_id_editable
+
+    @api.depends("user_id")
+    def _compute_team_id(self):
+        """When a user is assigned, the first team which the user belongs to is
+        assigned, and if no one, the first purchase team.
+        """
+        first_team = self.env["purchase.team"].search([], limit=1)
+        for record in self:
+            record.team_id = record.user_id.purchase_team_ids[:1] or first_team
+
+    @api.onchange("partner_id")
+    def onchange_partner_id(self):
+        res = super().onchange_partner_id()
+        if self.partner_id:
+            partner = self.partner_id.commercial_partner_id
+            if not self.env.context.get("default_user_id"):
+                self.user_id = partner.purchase_user_id or self.env.user
+            if not self.env.context.get("default_team_id"):
+                self.team_id = (
+                    partner.purchase_team_id
+                    or self.user_id.purchase_team_ids[:1]
+                    or self.env["purchase.team"].search([], limit=1)
+                )
+        return res