[ADD] estate: Chapter 13 - add a link module.

Initial implementation of estate module with property management features

Author: yewentai

estate_account/__init__.py

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+from . import models

estate_account/__manifest__.py

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+{
+    "name": "Estate",
+    "version": "1.0",
+    "author": "Joyep",
+    "license": "LGPL-3",
+    "depends": ["base"],
+    "data": [
+        "data/ir.model.access.csv",
+        "views/estate_property_views.xml",
+        "views/estate_property_type_views.xml",
+        "views/estate_property_tag_views.xml",
+        "views/estate_menus.xml",
+        "views/inherited_users_views.xml",
+    ],
+    "installable": True,
+    "application": True,
+    "auto_install": False,
+}

estate_account/data/ir.model.access.csv

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+id,name,model_id:id,group_id:id,perm_read,perm_write,perm_create,perm_unlink
+access_estate_property_account,access_estate_property_account,model_estate_property,,1,0,0,0

estate_account/models/__init__.py

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+from . import (
+    estate_property,
+)

estate_account/models/estate_property.py

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+from odoo import fields, models
+from odoo.exceptions import UserError
+
+
+class EstateProperty(models.Model):
+    _inherit = "estate.property"
+
+    def action_set_sold(self):
+        # Check if the property is canceled
+        for record in self:
+            if record.status == "canceled":
+                msg = "A cancelled property cannot be set as sold."
+                raise UserError(msg)
+            record.status = "sold"
+
+        # Create invoice
+        self.env["account.move"].create(
+            {
+                "partner_id": self.partner_id.id,
+                "move_type": "out_invoice",
+                "invoice_line_ids": [
+                    (
+                        0,
+                        0,
+                        {
+                            "name": self.name,
+                            "quantity": 1,
+                            "price_unit": self.selling_price,
+                        },
+                    ),
+                    (
+                        0,
+                        0,
+                        {
+                            "name": "6% commission on selling price",
+                            "quantity": 1,
+                            "price_unit": self.selling_price * 0.06,
+                        },
+                    ),
+                    (
+                        0,
+                        0,
+                        {
+                            "name": "Administrative fees",
+                            "quantity": 1,
+                            "price_unit": 100.00,
+                        },
+                    ),
+                ],
+            }
+        )
+
+        return super(EstateProperty, self).action_set_sold()