[ADD] Estate: Adding the new Real Estate Module's directory.

estate/__init__.py

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+from . import models

estate/__manifest__.py

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+{
+    'name': 'Estate',
+    'version': '1.0',
+    'category': 'Real Estate',
+    'sequence': 15,
+    'summary': 'Track Real Estate',
+    'description': "This app is made for real estate tracking.",
+    'website': 'https://www.odoo.com/page/estate',
+    'depends': [
+        'base'
+    ],
+    'data': [
+        'security/ir.model.access.csv',
+        'views/estate_property_tag_views.xml',
+        'views/estate_property_offer_views.xml',
+        'views/estate_property_type_views.xml',
+        'views/estate_property_views.xml',
+        'views/res_users_views.xml',
+        'views/estate_menus.xml'
+    ],
+    'installable': True,
+    'application': True,
+    'license': 'LGPL-3'
+}

estate/models/__init__.py

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+from . import estate_property, estate_property_offer, estate_property_tag, estate_property_type, res_users

estate/models/estate_property.py

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+from dateutil.relativedelta import relativedelta
+
+from odoo import api, fields, models
+from odoo.exceptions import UserError, ValidationError
+from odoo.tools.float_utils import float_compare, float_is_zero
+
+
+class EstateProperty(models.Model):
+    _name = "estate.property"
+    _description = "Real Estate"
+    _sql_constraints = [
+        ('check_expected_price', 'CHECK(expected_price > 0)', 'Expected price must be strictly positve'),
+        ('check_selling_price', 'CHECK(selling_price >= 0)', 'Selling price must be positive')
+    ]
+    _order = 'id desc'
+
+    name = fields.Char('Name', required=True)
+    description = fields.Char('Description')
+    post_code = fields.Char('Post Code')
+    state = fields.Selection(
+        string="State",
+        selection=[
+            ('new', 'New'),
+            ('offer received', 'Offer Received'),
+            ('offer accepted', 'Offer Accepted'),
+            ('sold', 'Sold'),
+            ('canceled', 'Canceled')],
+        help="Estate current state",
+        required=True,
+        default='new',
+        copy=False
+    )
+    date_availability = fields.Date('Available From', copy=False, default=lambda self: fields.Date.today() + relativedelta(months=3))
+    expected_price = fields.Float('Expected Price', required=True)
+    selling_price = fields.Float('Selling Price', readonly=True, copy=False)
+    best_price = fields.Float('Best Price', compute='_compute_best_price')
+    bedrooms = fields.Integer('Bedrooms Count', default=2)
+    living_area = fields.Float('Living Area size')
+    facades = fields.Integer('Number of facades')
+    garage = fields.Boolean('Has garage')
+    garden = fields.Boolean('Has garden')
+    garden_area = fields.Float('Garden area')
+    garden_orientation = fields.Selection(
+        string='Garden Orientation',
+        selection=[('north', 'North'), ('south', 'South'), ('east', 'East'), ('west', 'West')],
+        help="Garden orientation selection"
+    )
+    total_area = fields.Float('Total Area', compute='_compute_total_area')
+    active = fields.Boolean('Is Active', default=True)
+    property_type_id = fields.Many2one('estate.property.type', string='Property Type')
+    buyer_id = fields.Many2one('res.partner', 'Buyer', copy=False)
+    salesperson_id = fields.Many2one('res.users', 'Salesperson', index=True, 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')
+
+    @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:
+            prices = record.offer_ids.mapped('price')
+            record.best_price = max(prices) if prices else 0
+
+    @api.onchange('garden')
+    def _onchange_garden_checkbox(self):
+        self.garden_area = 10 if self.garden else 0
+        self.garden_orientation = 'north' if self.garden else None
+
+    @api.constrains('selling_price', 'expected_price')
+    def _check_selling_price(self):
+        for record in self:
+            if float_is_zero(record.selling_price, precision_digits=2):
+                continue
+
+            if float_compare(record.selling_price, record.expected_price * 0.9, precision_digits=2) < 0:
+                raise ValidationError("Selling price cannot be lower than 90% of the expected price.")
+
+    @api.ondelete(at_uninstall=False)
+    def _unlink_if_state_is_new_or_canceled(self):
+        invalid_records = self.filtered(lambda r: r.state not in ('new', 'canceled'))
+        if invalid_records:
+            raise UserError("You can only delete properties in NEW or CANCELED state.")
+
+    def action_set_sold(self):
+        for record in self:
+            if (record.state == 'sold'):
+                raise UserError('Property Already Sold')
+            if record.state != 'canceled':
+                record.state = 'sold'
+            else:
+                raise UserError("Cannot sell a canceled property")
+        return True
+
+    def action_set_cancel(self):
+        for record in self:
+            if record.state == 'sold':
+                raise UserError('Cannot cancel a sold property')
+            if (record.state == 'canceled'):
+                raise UserError("Property Already canceled")
+            record.state = 'canceled'
+        return True

estate/models/estate_property_offer.py

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+from datetime import timedelta
+
+from odoo import api, fields, models
+from odoo.exceptions import UserError
+
+
+class EstatePropertyOffer(models.Model):
+    _name = "estate.property.offer"
+    _description = "Estate Property Offer"
+    _sql_constraints = [
+        ('check_offer_price', 'CHECK(price >= 0)', 'Offer price must be strictly positive')
+    ]
+    _order = 'price desc'
+
+    price = fields.Float(string="Price")
+    status = fields.Selection(
+        string="Status",
+        selection=[('accepted', 'Accepted'), ('refused', 'Refused')],
+        copy=False
+    )
+    validity = fields.Integer(string="Validity (days)", default=7)
+    date_deadline = fields.Date(string="Deadline", compute="_compute_date_deadline", inverse="_inverse_date_deadline", store=True)
+    partner_id = fields.Many2one('res.partner', required=True, string="Partner")
+    property_id = fields.Many2one('estate.property', required=True, string="Property")
+    property_type_id = fields.Many2one(related='property_id.property_type_id', store=True, string='Property Type')
+
+    @api.depends('create_date', 'validity')
+    def _compute_date_deadline(self):
+        for offer in self:
+            create_date = offer.create_date or fields.Datetime.now()
+            offer.date_deadline = create_date.date() + timedelta(days=offer.validity)
+
+    def _inverse_date_deadline(self):
+        for offer in self:
+            create_date = offer.create_date or fields.Datetime.now()
+            offer.validity = (offer.date_deadline - create_date.date()).days if offer.date_deadline else 0
+
+    @api.model_create_multi
+    def create(self, vals_list):
+        for vals in vals_list:
+            property = self.env['estate.property'].browse(vals['property_id'])
+            if property.state == 'new':
+                property.state = 'offer received'
+            if any(offer.price >= vals['price'] for offer in property.offer_ids):
+                raise UserError("Cannot create offer: there is already an offer with an equal or higher price.")
+        return super().create(vals_list)
+
+    def action_set_accept(self):
+        for record in self:
+            if (record.property_id.state in ('offer accepted', 'sold')):
+                raise UserError('An offer already accepted for this property')
+            if (record.property_id.state == 'canceled'):
+                raise UserError('Property canceled')
+            if (record.status in ('refused', 'accepted')):
+                raise UserError('Offer already accepted/refused')
+
+            record.property_id.selling_price = record.price
+            record.property_id.state = 'offer accepted'
+            record.property_id.buyer_id = record.partner_id
+            record.status = 'accepted'
+        return True
+
+    def action_set_refuse(self):
+        for record in self:
+            if (record.property_id.state in ('offer accepted', 'sold')):
+                raise UserError('An offer already accepted for this property')
+            if (record.property_id.state == 'canceled'):
+                raise UserError('Property canceled')
+            if (record.status in ('accepted', 'refused')):
+                raise UserError('Offer already accepted/refused')
+            record.status = 'refused'
+        return True

estate/models/estate_property_tag.py

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

estate/models/estate_property_type.py

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+from odoo import api, fields, models
+
+
+class EstatePropertyType(models.Model):
+    _name = 'estate.property.type'
+    _description = 'Estate Property Type'
+    _order = 'name'
+
+    name = fields.Char(string='Property Type', required=True)
+    sequence = fields.Integer('Sequence', default=1, help='Used to order offer types. Lower is better.')
+    property_ids = fields.One2many('estate.property', 'property_type_id', string='Properties')
+    offer_ids = fields.One2many('estate.property.offer', 'property_type_id', string='Properties offers')
+    offer_count = fields.Integer(compute='_compute_offer_count', string='Offers Count')
+
+    @api.depends('offer_ids')
+    def _compute_offer_count(self):
+        for record in self:
+            record.offer_count = len(record.offer_ids)

estate/models/res_users.py

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+from odoo import fields, models
+
+
+class ResUsers(models.Model):
+    _inherit = 'res.users'
+
+    property_ids = fields.One2many('estate.property', 'salesperson_id', domain=[('state', 'in', ['new', 'offer received'])])

estate/security/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,access_estate_property,model_estate_property,base.group_user,1,1,1,1
+access_estate_property_type,access_estate_property_type,model_estate_property_type,base.group_user,1,1,1,1
+access_estate_property_tag,access_estate_property_tag,model_estate_property_tag,base.group_user,1,1,1,1
+access_estate_property_offer,access_estate_property_offer,model_estate_property_offer,base.group_user,1,1,1,1

estate/views/estate_menus.xml

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+<?xml version="1.0"?>
+<odoo>
+    <menuitem id="estate_property_menu_root" name="Estate">
+        <menuitem id="estate_property_first_level_menu" name="Estates">
+            <menuitem id="estate_property_menu_action" action="estate_property_action"/>
+            <menuitem id="estate_property_type_menu_action" action="estate_property_type_action"/>
+            <menuitem id="estate_property_tag_menu_action" action="estate_property_tag_action"/>
+        </menuitem>
+    </menuitem>
+</odoo>

estate/views/estate_property_offer_views.xml

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+<?xml version="1.0"?>
+<odoo>
+    <record id="estate_property_offer_view_search" model="ir.ui.view">
+        <field name="name">estate.property.offer.search</field>
+        <field name="model">estate.property.offer</field>
+        <field name="arch" type="xml">
+            <search string="Property offer Search">
+                <field name="partner_id" string="Partner"/>
+                <field name="property_id" string="Property"/>
+                <field name="price" string="Price"/>
+                <separator/>
+                <group expand="1" string="Group By">
+                    <filter name="status" string="Status" context="{'group_by':'status'}"/>
+                </group> 
+            </search>
+        </field>
+    </record>
+
+    <record id="estate_property_offer_view_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 string="Property tag Form">
+                <sheet>
+                    <group>
+                        <field name="price" string="Price"/>
+                        <field name="status" string="Status"/>
+                        <field name="partner_id" string="Partner"/>
+                        <field name="property_id" string="Property"/>
+                    </group>
+                </sheet>
+            </form>
+        </field>
+    </record>
+
+    <record id="estate_property_offer_view_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 string="Tags" editable="bottom">
+                <field name="price" string="Price"/>
+                <field name="status" string="Status"/>
+                <field name="validity" string="Validity"/>
+                <field name="date_deadline" string="Date deadline"/>
+                <field name="partner_id" string="Partner"/>
+                <field name="property_id" string="Property"/>
+            </list>
+        </field>
+    </record>
+
+    <record id="action_estate_property_offer" model="ir.actions.act_window">
+        <field name="name">Offers</field>
+        <field name="res_model">estate.property.offer</field>
+        <field name="view_mode">list,form</field>
+        <field name="domain">[('property_type_id', '=', active_id)]</field>
+    </record>
+</odoo>

estate/views/estate_property_tag_views.xml

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+<?xml version="1.0"?>
+<odoo>
+    <record id="estate_property_tag_view_search" model="ir.ui.view">
+        <field name="name">estate.property.tag.search</field>
+        <field name="model">estate.property.tag</field>
+        <field name="arch" type="xml">
+            <search string="Property tags Search">
+                <field name="name" string="Tag Name"/>
+            </search>
+        </field>
+    </record>
+
+    <record id="estate_property_tag_view_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 string="Property tag Form">
+                <sheet>
+                    <group>
+                        <field name="name" string="Name"/>
+                    </group>
+                </sheet>
+            </form>
+        </field>
+    </record>
+
+    <record id="estate_property_tag_view_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 string="Tags" editable="top">
+                <field name="name" string="Name"/>
+            </list>
+        </field>
+    </record>
+
+    <record id="estate_property_tag_action" model="ir.actions.act_window">
+        <field name="name">Property tag Action</field>
+        <field name="res_model">estate.property.tag</field>
+        <field name="view_mode">list,form</field>
+    </record>
+</odoo>