[ADD] real_estate,* : Full Implementation with ORM, Access Control and Accounting Integration

estate_account/__init__.py

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+from . import models

estate_account/__manifest__.py

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+{
+    'name': 'Estate Account',
+    'version': '1.0',
+    'sequence': 2,
+    'depends': ['base', 'real_estate', 'account'],
+    'category': 'Real Estate',
+    'author': 'prbo',
+    'summary': 'Invoice integration with Real Estate',
+    'description': 'Creates an invoice when a property is sold.',
+    'license': 'LGPL-3',
+    'data': [],
+    'installable': True,
+    'application': False,
+    'auto_install': False,
+}

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 Command, models
+from odoo.exceptions import UserError
+
+
+class EstateProperty(models.Model):
+    _inherit = "estate.property"
+
+    def action_sold(self):
+        self.check_access_rights('write')
+        self.check_access_rule('write')
+        print(" REACHED ".center(100, '='))
+        journal = self.env['account.journal'].sudo().search([
+            ('type', '=', 'sale'),
+        ], limit=1)
+
+        if not journal:
+            raise UserError("No sales journal found!")
+
+        for property in self:
+            if not property.buyer:
+                raise UserError("Buyer is required to create invoice.")
+
+            selling_price = property.selling_price
+            service_fee = selling_price * 0.06
+
+            invoice_vals = {
+                'partner_id': property.buyer.id,
+                'move_type': 'out_invoice',
+                'journal_id': journal.id,
+                'invoice_line_ids': [
+                    Command.create({
+                        'name': "Service Fees (6%)",
+                        'quantity': 1,
+                        'price_unit': service_fee,
+                    }),
+                    Command.create({
+                        'name': "Administrative Fees",
+                        'quantity': 1,
+                        'price_unit': 100.00,
+                    }),
+                ],
+            }
+            self.env['account.move'].sudo().create(invoice_vals)
+        return super().action_sold()

real_estate/__init__.py

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+from . import models

real_estate/__manifest__.py

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+{
+    'name': "Real Estate",
+    'version': '1.0',
+    'author': "prbo",
+    'license': 'LGPL-3',
+    'category': 'Real Estate/Brokerage',
+    'sequence': 1,
+    'application': True,
+    'depends': ['base'],
+    'data': [
+        'security/estate_security.xml',
+        'security/ir.model.access.csv',
+        'security/estate_property_rules.xml',
+        'data/estate.property.type.csv',
+        'views/estate_property_offer_view.xml',
+        'views/estate_property_type_view.xml',
+        'views/estate_property_views.xml',
+        'views/estate_property_tag_view.xml',
+        'views/res_users_views.xml',
+        'views/estate_menus.xml',
+    ],
+    'demo': [
+        'demo/demo_data.xml',
+    ],
+}

real_estate/data/estate.property.type.csv

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+id,name
+estate_property_type_residential,Residential
+estate_property_type_commercial,Commercial
+estate_property_type_industrial,Industrial
+estate_property_type_land,Land

real_estate/demo/demo_data.xml

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+<odoo>
+    <record id="estate_demo_property" model="estate.property">
+        <field name="name">Big Villa</field>
+        <field name="description">A nice and big villa</field>
+        <field name="expected_price">1600000</field>
+        <field name="bedrooms">6</field>
+        <field name="living_area">100</field>
+        <field name="facades">4</field>
+        <field name="garage">True</field>
+        <field name="garden">True</field>
+        <field name="garden_area">100000</field>
+        <field name="garden_orientation">south</field>
+        <field name="postcode">12345</field>
+        <field name="date_availability">2020-02-02</field>
+        <field name="state">new</field>
+        <field name="property_type" ref="estate_property_type_residential" />
+    </record>
+    <record id="estate_demo_property_2" model="estate.property">
+        <field name="name">Trailer home</field>
+        <field name="description">Home in a trailer park</field>
+        <field name="expected_price">100000</field>
+        <field name="selling_price">120000</field>
+        <field name="bedrooms">1</field>
+        <field name="living_area">10</field>
+        <field name="facades">4</field>
+        <field name="garage">False</field>
+        <field name="garden">False</field>
+        <field name="postcode">54321</field>
+        <field name="date_availability">1970-01-01</field>
+        <field name="state">cancelled</field>
+        <field name="property_type" ref="estate_property_type_residential" />
+    </record>
+    <record id="offer_azure_accepted" model="estate.property.offer">
+        <field name="partner_id" ref="base.res_partner_1" />
+        <field name="property_id" ref="estate_demo_property" />
+        <field name="price">300000</field>
+        <field name="validity">14</field>
+        <field name="date_deadline" eval="(datetime.now() + timedelta(days=14)).date().isoformat()" />
+    </record>
+    <record id="offer_azure_rejected" model="estate.property.offer">
+        <field name="partner_id" ref="base.res_partner_1" />
+        <field name="property_id" ref="estate_demo_property" />
+        <field name="price">1500000</field>
+        <field name="validity">14</field>
+        <field name="date_deadline" eval="(datetime.now() + timedelta(days=14)).date().isoformat()" />
+    </record>
+    <record id="offer_deco_rejected" model="estate.property.offer">
+        <field name="partner_id" ref="base.res_partner_2" />
+        <field name="property_id" ref="estate_demo_property" />
+        <field name="price">1500001</field>
+        <field name="validity">14</field>
+        <field name="date_deadline" eval="(datetime.now() + timedelta(days=14)).date().isoformat()" />
+    </record>
+    <function model="estate.property.offer" name="action_accept">
+        <value eval="[ref('offer_azure_accepted')]" />
+    </function>
+    <function model="estate.property.offer" name="action_refuse">
+        <value eval="[ref('offer_azure_rejected')]" />
+    </function>
+    <function model="estate.property.offer" name="action_refuse">
+        <value eval="[ref('offer_deco_rejected')]" />
+    </function>
+    <record id="demo_property_modern_apartment" model="estate.property">
+    <field name="name">Modern Apartment</field>
+    <field name="expected_price">250.0</field>
+    <field name="description">Stylish and modern 2BHK in the city center.</field>
+    <field name="date_availability">2024-06-10</field>
+    <field name="postcode">b</field>
+    <field name="selling_price">5000.0</field>
+    <field name="state">new</field>
+    <field name="bedrooms">2</field>
+    <field name="living_area">950.0</field>
+    <field name="facades">2</field>
+    <field name="garage" eval="True"/>
+    <field name="garden" eval="True"/>
+    <field name="garden_area">200.0</field>
+    <field name="property_type" ref="estate.property.type.residential"/>
+    <field name="offer_ids" eval="[
+        Command.create({
+            'partner_id': ref('base.res_partner_12'),
+            'price': 2600000.0,
+            'validity': 14,
+        }),
+        Command.create({
+            'partner_id': ref('base.res_partner_2'),
+            'price': 2700000.0,
+            'validity': 14,
+        })
+    ]"/>
+  </record>
+</odoo>

real_estate/models/__init__.py

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+#license': 'LGPL-3
+from . import estate_property
+from . import estate_property_type
+from . import estate_property_tag
+from . import estate_property_offer
+from . import res_users

real_estate/models/estate_property.py

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+from datetime import date, timedelta
+from odoo import api, fields, models
+from odoo.exceptions import UserError, ValidationError
+from odoo.tools.float_utils import float_compare
+
+
+class EstateProperty(models.Model):
+    _name = "estate.property"
+    _description = "Test Model"
+    _order = "id desc"
+    name = fields.Char(required=True)
+    description = fields.Text()
+    postcode = fields.Char()
+    date_availability = fields.Date(
+        string="Available From",
+        copy=False,
+        default=lambda self: date.today() + timedelta(days=90)
+    )
+    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(string="Bedrooms", default=2)
+    facades = fields.Integer(string="Facades")
+    garage = fields.Boolean(string="Garage")
+    garden = fields.Boolean(string="Garden")
+    living_area = fields.Float(string="Living Area (m²)")
+    garden_area = fields.Float(string="Garden Area (m²)")
+    total_area = fields.Float(compute="_compute_total_area")
+    garden_orientation = fields.Selection(
+        string='Garden Orientation',
+        selection=[
+            ('north', 'North'),
+            ('south', 'South'),
+            ('east', 'East'),
+            ('west', 'West')
+        ],
+        help="Direction of the garden"
+    )
+    active = fields.Boolean(default=True)
+    state = fields.Selection(
+        selection=[
+            ('new', 'New'),
+            ('offer_received', 'Offer Received'),
+            ('offer_accepted', 'Offer Accepted'),
+            ('sold', 'Sold'),
+            ('cancelled', 'Cancelled')
+        ],
+        required=True,
+        copy=False,
+        default='new'
+    )
+    property_type = fields.Many2one("estate.property.type", string="Property Type")
+    buyer = fields.Many2one("res.partner", string="Buyer", copy=False)
+    seller = fields.Many2one("res.users", string="Salesperson", default=lambda self: self.env.user)
+    tag_ids = fields.Many2many("estate.property.tag", string="Tags")
+    offer_ids = fields.One2many("estate.property.offer", "property_id", string="Offers")
+    _sql_constraints = [
+        ('check_expected_price_positive', 'CHECK(expected_price > 0)', 'Expected price must be strictly positive.'),
+        ('check_selling_price_positive', 'CHECK(selling_price >= 0)', 'Selling price must be zero or positive.')
+    ]
+    company_id = fields.Many2one(
+        'res.company',
+        string='Company',
+        required=True,
+        default=lambda self: self.env.company
+    )
+    @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:
+            record.best_price = max(record.offer_ids.mapped("price"), default=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 in ['sold', 'cancelled']:
+                raise UserError("You cannot sell a cancelled or already sold property.")
+            if not record.buyer:
+                raise UserError("Please assign a buyer before marking the property as sold.")
+            record.state = 'sold'
+    def action_cancel(self):
+        for record in self:
+            if record.state in ['sold', 'cancelled']:
+                raise UserError("You cannot cancel a sold or already cancelled property.")
+            record.state = 'cancelled'
+    @api.constrains('selling_price', 'expected_price')
+    def _check_selling_price_margin(self):
+        for record in self:
+            if float_compare(record.selling_price, 0.0, precision_digits=2) > 0:
+                min_acceptable_price = 0.9 * record.expected_price
+                if float_compare(record.selling_price, min_acceptable_price, precision_digits=2) < 0:
+                    raise ValidationError("Selling price cannot be lower than 90% of the expected price.")
+    @api.ondelete(at_uninstall=False)
+    def _check_property_state_on_delete(self):
+        for record in self:
+            if record.state not in ['new', 'cancelled']:
+                raise UserError("Only properties with state 'New' or 'Cancelled' can be deleted.")

real_estate/models/estate_property_offer.py

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+from datetime import timedelta
+from odoo import api, models, fields
+from odoo.exceptions import UserError, ValidationError
+
+
+class EstatePropertyOffer(models.Model):
+    _name = "estate.property.offer"
+    _description = "Property Offer"
+    _order = "price desc"
+    price = fields.Float(required=True)
+    status = fields.Selection([
+        ('accepted', 'Accepted'),
+        ('refused', 'Refused')
+    ])
+    partner_id = fields.Many2one("res.partner", string="Partner", required=True)
+    property_id = fields.Many2one(
+        "estate.property",
+        required=True,
+        ondelete='cascade'
+    )
+    property_type_id = fields.Many2one(
+        related="property_id.property_type",
+        store=True,
+        string="Property Type"
+    )
+    validity = fields.Integer(string="Validity (days)", default=7)
+    date_deadline = fields.Date( string="Deadline Date", compute="_compute_date_deadline", inverse="_inverse_date_deadline", store=True)
+    _sql_constraints = [
+        ('check_offer_price_positive', 'CHECK(price > 0)', 'Offer price must be strictly positive.')
+    ]
+    @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)
+    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
+    @api.model_create_multi
+    def create(self, vals_list):
+        property_ids = list({vals['property_id'] for vals in vals_list if 'property_id' in vals})
+        property_records = self.env['estate.property'].browse(property_ids)
+        property_map = {prop.id: prop for prop in property_records}
+        for vals in vals_list:
+            property_id = vals.get('property_id')
+            property_rec = property_map.get(property_id)
+            if property_rec:
+                existing_offers = property_rec.offer_ids.filtered(
+                    lambda o: o.price >= vals.get('price', 0)
+                )
+                if existing_offers:
+                    raise ValidationError("You cannot create an offer lower than or equal to an existing one.")
+                property_rec.state = 'offer_received'
+        return super().create(vals_list)

real_estate/models/estate_property_tag.py

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+from odoo import fields, models
+
+
+class EstatePropertyTag(models.Model):
+    _name = "estate.property.tag"
+    _description = "Property Tag"
+    _order = "name"
+    name = fields.Char(required=True)
+    color = fields.Integer(string="Color")
+    sequence = fields.Integer(string="sequence", default="10")
+    _sql_constraints = [
+        ('unique_tag_name', 'UNIQUE(name)', 'Tag name must be unique.')
+    ]