[ADD] estate: Implement property offers with computed fields and onchange

- Add estate.property.offer model with price, validity, and deadline fields
- Implement bidirectional compute/inverse for validity and date_deadline
- Add total_area computed field (living_area + garden_area) to estate.property
- Add best_price computed field to show highest offer price
- Add offers tab in property form view with inline list display
- Implement onchange for garden field to auto-set area (10) and orientation (North)
- Create estate_property_offer_views.xml with list and form views
- Add security access rules for estate.property.offer model
- Fix One2many/Many2one relationship between property and offers

Author: raibr

.DS_Store

@@ -1,7 +1,7 @@
 # -*- coding: utf-8 -*-
 # Part of Odoo. See LICENSE file for full copyright and licensing details.
 
-from odoo import fields, models
+from odoo import api, fields, models
 
 
 class EstateProperty(models.Model):
@@ -31,3 +31,27 @@ class EstateProperty(models.Model):
     property_type_id = fields.Many2one("estate.property.type", string="Property Type")
     tag_ids = fields.Many2many("estate.property.tag", string="Tags")
     offer_ids = fields.One2many("estate.property.offer", "property_id", string="Offers")
+    total_area = fields.Integer(compute="_compute_total_area")
+    best_price = fields.Float(compute="_compute_best_price", string="Best Offer Price")
+
+    @api.depends('living_area', 'garden_area')
+    def _compute_total_area(self):
+        for record in self:
+            record.total_area = record.living_area + record.garden_area
+
+    @api.depends('offer_ids.price')
+    def _compute_best_price(self):
+        for record in self:
+            if record.offer_ids:
+                record.best_price = max(record.offer_ids.mapped('price'))
+            else:
+                record.best_price = 0.0
+
+    @api.onchange('garden')
+    def _onchange_garden(self):
+        if self.garden:
+            self.garden_area = 10
+            self.garden_orientation = 'north'
+        else:
+            self.garden_area = 0
+            self.garden_orientation = False

estate/.DS_Store

@@ -1,13 +1,33 @@
 # -*- coding: utf-8 -*-
 # Part of Odoo. See LICENSE file for full copyright and licensing details.
 
-from odoo import fields, models
+from datetime import timedelta
+from odoo import api, fields, models
 
 
 class EstatePropertyOffer(models.Model):
     _name = "estate.property.offer"
     _description = "Real Estate Property Offer"
-    _order = "name"
+    _order = "price desc"
 
-    name = fields.Char(required=True)
+    price = fields.Float(required=True)
     property_id = fields.Many2one("estate.property", string="Property", required=True)
+    validity = fields.Integer(default=7, string="Validity (days)")
+    date_deadline = fields.Date(
+        compute="_compute_date_deadline",
+        inverse="_inverse_date_deadline",
+        store=True,
+        string="Deadline",
+    )
+
+    @api.depends("validity")
+    def _compute_date_deadline(self):
+        for record in self:
+            record.date_deadline = fields.Date.today() + timedelta(days=record.validity)
+        print("Computed deadlines2")
+
+    def _inverse_date_deadline(self):
+        for record in self:
+            if record.date_deadline:
+                record.validity = (record.date_deadline - fields.Date.today()).days
+        print("Inversed deadlines")

estate/models/estate_property.py

@@ -5,10 +5,12 @@
         <field name="name">estate.property.offer.view.tree</field>
         <field name="model">estate.property.offer</field>
         <field name="arch" type="xml">
-            <tree>
-                <field name="name"/>
+            <list>
+                <field name="price"/>
                 <field name="property_id"/>
-            </tree>
+                <field name="validity"/>
+                <field name="date_deadline"/>
+            </list>
         </field>
     </record>
 
@@ -20,8 +22,10 @@
             <form>
                 <sheet>
                     <group>
-                        <field name="name"/>
+                        <field name="price"/>
                         <field name="property_id"/>
+                        <field name="validity"/>
+                        <field name="date_deadline"/>
                     </group>
                 </sheet>
             </form>
@@ -32,6 +36,6 @@
     <record id="estate_property_offer_action" model="ir.actions.act_window">
         <field name="name">Property Offers</field>
         <field name="res_model">estate.property.offer</field>
-        <field name="view_mode">tree,form</field>
+        <field name="view_mode">list,form</field>
     </record>
 </odoo>

estate/models/estate_property_offer.py

@@ -38,6 +38,7 @@
                         </group>
                         <group>
                             <field name="expected_price"/>
+                            <field name="best_price"/>
                             <field name="selling_price"/>
                         </group>
                     </group>
@@ -52,8 +53,12 @@
                                 <field name="garden"/>
                                 <field name="garden_area"/>
                                 <field name="garden_orientation"/>
+                                <field name="total_area"/>
                             </group>
                         </page>
+                        <page string="Offers">
+                            <field name="offer_ids"/>
+                        </page>
                     </notebook>
                 </sheet>
             </form>