[ADD] real_estate: add offer status buttons and state transitions on properties

This commit introduces action buttons to accept or refuse offers in the
real_estate module. When an offer is accepted, the property’s selling price,
buyer, and state are updated accordingly. Other offers are automatically refused
to ensure only one offer is accepted per property.

Also added:
- 'state' field on properties to manage lifecycle (new, offer_received, sold,
cancelled)
- Computed best price field from offers
- Validity-based deadline logic using compute/inverse methods on offers
- Safeguards preventing sale of cancelled properties and cancellation of sold
ones

Author: prbo-odoo

real_estate/__manifest__.py

@@ -10,6 +10,9 @@
     'data': [
     'security/ir.model.access.csv',
     'views/estate_property_views.xml',
+    'views/estate_property_type_view.xml', 
+    'views/estate_property_tag_view.xml',
+    'views/estate_property_offer_view.xml',
     'views/estate_menus.xml'
 ]
 }

real_estate/models/__init__.py

@@ -1 +1,4 @@
 from . import estate_property
+from . import estate_property_type
+from . import estate_property_tag
+from . import estate_property_offer

real_estate/models/estate_property.py

@@ -1,10 +1,12 @@
-from odoo import fields, models
+from odoo import fields, models, api
 from datetime import date, timedelta
+from odoo.exceptions import UserError
 
 class estate_property(models.Model):
     _name = "estate.property"
     _description = "Test Model"
 
+
     name = fields.Char(required=True)
     description = fields.Text()
     postcode = fields.Char()
@@ -15,12 +17,17 @@ class estate_property(models.Model):
     )
     expected_price = fields.Float(required=True)
     selling_price = fields.Float(readonly=True, copy=False)
+
+    best_price = fields.Float(compute="_compute_best_price")
+
     bedrooms = fields.Integer(default=2)
-    living_area = fields.Integer()
+
     facades = fields.Integer()
     garage = fields.Boolean()
     garden = fields.Boolean()
-    garden_area = fields.Integer()
+    living_area = fields.Float()
+    garden_area = fields.Float()
+    total_area = fields.Float(compute="_compute_total_area")
     garden_orientation = fields.Selection(
         string='Garden Orientation',
         selection=[('north', 'North'), ('south', 'South'),
@@ -40,6 +47,49 @@ class estate_property(models.Model):
     copy=False,
     default='new'
 )
+    property_type = fields.Many2one("estate.property.type", string="Property Type", default=None)
+    buyer = fields.Many2one("res.partner", string="Buyer", copy=False)
+    seller = fields.Many2one("res.partner", string="Salesperson", default=lambda self: self.env.user)
+    tag_ids = fields.Many2many("estate.property.tag", string="Tags", default=None)
+    offer_ids = fields.One2many("estate.property.offer", "property_id", string="Offers")
+
+    @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                 
+
+
+    def action_sold(self):
+        for record in self:
+            if record.state == 'cancelled':
+                raise UserError("Cancelled property cannot be sold.")
+            record.state = 'sold'
+        return True
+
+    def action_cancel(self):
+        for record in self:
+            if record.state == 'sold':
+                raise UserError("Sold property cannot be cancelled.")
+            record.state = 'cancelled'
+        return True
 
-    
 

real_estate/models/estate_property_offer.py

@@ -0,0 +1,51 @@
+from odoo import models, fields, api
+from datetime import timedelta
+from odoo.exceptions import UserError
+
+class EstatePropertyOffer(models.Model):
+    _name = "estate.property.offer"
+    _description = "Property Offer"
+
+    price = fields.Float()
+    status = fields.Selection([
+        ('accepted', 'Accepted'),
+        ('refused', 'Refused')
+    ])
+    partner_id = fields.Many2one("res.partner", string="Partner", required=True)
+    property_id = fields.Many2one("estate.property", string="Property", required=True)
+
+    validity = fields.Integer(default=7)
+    date_deadline = fields.Date(compute="_compute_date_deadline", inverse="_inverse_date_deadline")
+
+    @api.depends("create_date", "validity")
+    def _compute_date_deadline(self):
+        for record in self:
+            create_date = record.create_date or fields.Date.today()
+            record.date_deadline = create_date + timedelta(days=record.validity)
+            print("Computed date_deadline:", record.date_deadline)
+
+    def _inverse_date_deadline(self):
+        for record in self:
+            create_date = record.create_date.date() if record.create_date else fields.Date.today()
+            record.validity = (record.date_deadline - create_date).days
+
+
+    def action_accept(self):
+        for record in self:
+            if record.property_id.state == 'sold':
+                raise UserError("You cannot accept an offer on a sold property.")
+            record.status = 'accepted'
+            record.property_id.selling_price = record.price
+            record.property_id.buyer = record.partner_id 
+            record.property_id.state = 'offer_accepted'
+
+            other_offers = self.search([
+                ('property_id', '=', record.property_id.id),
+                ('id', '!=', record.id)
+            ])
+            other_offers.write({'status': 'refused'})
+
+    def action_refuse(self):
+        for offer in self:
+            offer.status = 'refused'
+        return True

real_estate/models/estate_property_tag.py

@@ -0,0 +1,7 @@
+from odoo import fields, models
+
+class estate_property_tag(models.Model):
+    _name = "estate.property.tag"
+    _description = "Property Tag"
+
+    name = fields.Char(required=True)

real_estate/models/estate_property_type.py

@@ -0,0 +1,7 @@
+from odoo import fields, models
+
+
+class estate_property_type(models.Model):
+    _name = "estate.property.type"
+    _description = "property type"
+    name = fields.Char(required=True)

real_estate/security/ir.model.access.csv

@@ -1,2 +1,5 @@
 id,name,model_id:id,group_id:id,perm_read,perm_write,perm_create,perm_unlink
-access_estate_property_user,access.estate.property,model_estate_property,,1,1,1,1
+access_estate_property_user,access.estate.property,model_estate_property,base.group_user,1,1,1,1
+access_estate_property_type_user,access.estate.property.type,model_estate_property_type,base.group_user,1,1,1,1
+access_estate_property_tag_user,access.estate.property.tag,model_estate_property_tag,base.group_user,1,1,1,1
+access_estate_property_offer_user,access.estate.property.offer,model_estate_property_offer,base.group_user,1,1,1,1

real_estate/views/estate_menus.xml

@@ -12,4 +12,16 @@
         action="action_estate_property"
         sequence="10" />
 
+    <menuitem id="estate_setting" name="Settings" parent="estate_menu_root" />
+
+    <menuitem id="estate_property_type"
+        name="Property Types"
+        parent="estate_setting"
+        action="action_estate_property_type" />
+
+    <menuitem id="estate_menu_property_tag"
+        name="Property Tags"
+        parent="estate_setting"
+        action="action_estate_property_tag" />
+
 </odoo>

real_estate/views/estate_property_offer_view.xml

@@ -0,0 +1,39 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<odoo>
+    <record id="view_estate_property_offer_list" model="ir.ui.view">
+        <field name="name">estate.property.offer.list</field>
+        <field name="model">estate.property.offer</field>
+        <field name="arch" type="xml">
+            <list>
+                <field name="price" />
+                <field name="partner_id" />
+                <field name="validity" />
+                <field name="date_deadline" />
+                <field name="status" />
+            </list>
+        </field>
+    </record>
+
+    <record id="view_estate_property_offer_form" model="ir.ui.view">
+        <field name="name">estate.property.offer.form</field>
+        <field name="model">estate.property.offer</field>
+        <field name="arch" type="xml">
+            <form>
+                <header>
+    <button name="action_accept" type="object" string="Accept" class="btn-primary"/>
+    <button name="action_refuse" type="object" string="Refuse" class="btn-secondary"/>
+</header>
+
+                <sheet>
+                    <group>
+                        <field name="price" />
+                        <field name="partner_id" />
+                        <field name="validity" />
+                        <field name="date_deadline" />
+                        <field name="status" />
+                    </group>
+                </sheet>
+            </form>
+        </field>
+    </record>
+</odoo>

real_estate/views/estate_property_tag_view.xml

@@ -0,0 +1,30 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<odoo>
+    <record id="view_estate_property_tag_list" model="ir.ui.view">
+        <field name="name">estate.property.tag.list</field>
+        <field name="model">estate.property.tag</field>
+        <field name="arch" type="xml">
+            <list>
+                <field name="name"/>
+            </list>
+        </field>
+    </record>
+
+    <record id="view_estate_property_tag_form" model="ir.ui.view">
+        <field name="name">estate.property.tag.form</field>
+        <field name="model">estate.property.tag</field>
+        <field name="arch" type="xml">
+            <form>
+                <field name="name"/>
+            </form>
+        </field>
+    </record>
+
+    <record id="action_estate_property_tag" model="ir.actions.act_window">
+        <field name="name">Property Tags</field>
+        <field name="res_model">estate.property.tag</field>
+        <field name="view_mode">list,form</field>
+    </record>
+
+    
+</odoo>