[ADD] estate: initialize the estate module

estate/__init__.py

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+from . import models

estate/__manifest__.py

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+{
+    'name': "Real Estate",
+    'version': '1.0',
+    'depends': ['base'],
+    'data': [
+        'security/ir.model.access.csv',
+        'views/estate_property_views.xml',
+        'views/estate_property_offer_views.xml',
+        'views/estate_property_type_views.xml',
+        'views/estate_property_tag_views.xml',
+        'views/res_users_views.xml',
+        'views/estate_menus.xml',
+    ],
+    'application': True,
+    'author': 'Odoo S.A.',
+    'license': 'LGPL-3',
+}

estate/models/__init__.py

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+from . import estate_property
+from . import estate_property_offer
+from . import estate_property_tag
+from . import estate_property_type
+from . import 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
+from odoo.tools.float_utils import float_compare
+
+GARDEN_ORIENTATIONS = [
+    ('north', 'North'),
+    ('south', 'South'),
+    ('east', 'East'),
+    ('west', 'West'),
+]
+
+PROPERTY_STATUS = [
+    ('new', 'New'),
+    ('offer received', 'Offer Received'),
+    ('offer accepted', 'Offer Accepted'),
+    ('sold', 'Sold'),
+    ('cancelled', 'Cancelled'),
+]
+
+
+class EstateProperty(models.Model):
+    _name = "estate.property"
+    _description = "An estate property model"
+    _order = "id desc"
+
+    # === FIELDS ===#
+
+    name = fields.Char(
+        required=True)
+    description = fields.Text()
+    postcode = fields.Char()
+    date_availability = fields.Date(
+        copy=False,
+        default=lambda self: self._default_date_availability())
+    expected_price = fields.Float(
+        required=True)
+    selling_price = fields.Float(
+        copy=False,
+        readonly=True)
+    bedrooms = fields.Integer(
+        default=2)
+    living_area = fields.Integer()
+    facades = fields.Integer()
+    garage = fields.Boolean()
+    garden = fields.Boolean()
+    garden_area = fields.Integer()
+    garden_orientation = fields.Selection(
+        selection=GARDEN_ORIENTATIONS,
+    )
+    active = fields.Boolean(
+        default=True)
+    state = fields.Selection(
+        copy=False,
+        default='new',
+        required=True,
+        selection=PROPERTY_STATUS,
+    )
+    property_type_id = fields.Many2one(
+        "estate.property.type",
+        string='Property Type')
+    salesperson_id = fields.Many2one(
+        "res.users",
+        string="Salesperson",
+        default=lambda self: self.env.user)
+    buyer_id = fields.Many2one(
+        "res.partner",
+        string="Buyer",
+        copy=False)
+    tag_ids = fields.Many2many(
+        "estate.property.tag",
+        string="Tags")
+    offer_ids = fields.One2many(
+        "estate.property.offer",
+        "property_id")
+    total_area = fields.Float(
+        compute='_compute_total_area',
+        string='Total Area')
+    best_price = fields.Float(
+        compute='_compute_best_price',
+        string='Best Offer')
+
+    _check_expected_price = models.Constraint(
+        'CHECK(expected_price > 0)',
+        'The expected price must be strictly positive!',
+    )
+
+    _check_selling_price = models.Constraint(
+        'CHECK(selling_price >= 0)',
+        'The selling price must be positive!',
+    )
+
+    # === COMPUTE METHODS ===#
+
+    # Default method to set date_availability to three months from today
+    def _default_date_availability(self):
+        return fields.Datetime.today() + relativedelta(months=3)
+
+    @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.mapped('offer_ids.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
+
+    # === ACTION METHODS ===#
+
+    def action_set_sold(self):
+        for record in self:
+            if record.state == 'cancelled':
+                error_message = "Cancelled properties cannot be sold."
+                raise UserError(error_message)
+            record.state = 'sold'
+        return True
+
+    def action_set_canceled(self):
+        for record in self:
+            if record.state == 'sold':
+                error_message = "Sold properties cannot be cancelled."
+                raise UserError(error_message)
+            record.state = 'cancelled'
+        return True
+
+    # === CONSTRAINT METHODS ===#
+
+    @api.constrains('selling_price', 'expected_price')
+    def _check_selling_price(self):
+        for record in self:
+            if record.selling_price and record.expected_price:
+                if float_compare(record.selling_price,
+                                 record.expected_price * 0.9,
+                                 precision_rounding=0.01) < 0:
+                    error_message = (
+                        "The selling price must be at least 90% "
+                        "of the expected price."
+                    )
+                    raise UserError(error_message)
+
+    # === CRUD OVERRIDES ===#
+
+    @api.ondelete(at_uninstall=False)
+    def _unlink_property(self):
+        for record in self:
+            if record.state not in ['new', 'cancelled']:
+                error_message = (
+                    "Only properties in 'New' or 'Cancelled' state "
+                    "can be deleted."
+                )
+                raise UserError(error_message)

estate/models/estate_property_offer.py

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+from dateutil.relativedelta import relativedelta
+
+from odoo import api, fields, models
+from odoo.exceptions import UserError
+
+
+OFFER_STATUS = [
+    ('accepted', 'Accepted'),
+    ('refused', 'Refused'),
+]
+
+
+class PropertyOffer(models.Model):
+    _name = "estate.property.offer"
+    _description = "An estate property offer model"
+    _order = "price desc"
+
+    # === FIELDS ===#
+
+    price = fields.Float()
+    status = fields.Selection(
+        selection=OFFER_STATUS,
+        copy=False)
+    partner_id = fields.Many2one(
+        "res.partner",
+        string='Partner',
+        required=True)
+    property_id = fields.Many2one(
+        "estate.property",
+        string='Property',
+        required=True,
+        ondelete='cascade')
+    validity = fields.Integer(
+        default=7,
+        string='Validity (days)')
+    date_deadline = fields.Date(
+        compute='_compute_date_deadline',
+        inverse='_inverse_date_deadline',
+        string='Deadline')
+    property_type_id = fields.Many2one(
+        related="property_id.property_type_id",
+        store=True,
+    )
+
+    _check_price = models.Constraint(
+        'CHECK(price > 0)',
+        'The price must be strictly positive!',
+    )
+
+    # === COMPUTE METHODS ===#
+
+    @api.depends('validity', 'create_date')
+    def _compute_date_deadline(self):
+        for record in self:
+            if record.create_date:
+                record.date_deadline = record.create_date.date() + \
+                    relativedelta(days=record.validity)
+            else:
+                record.date_deadline = fields.Datetime.today() + \
+                    relativedelta(days=record.validity)
+
+    def _inverse_date_deadline(self):
+        for record in self:
+            if record.create_date and record.date_deadline:
+                delta = record.date_deadline - record.create_date.date()
+                record.validity = delta.days
+
+    # === ACTION METHODS ===#
+
+    def action_accept_offer(self):
+        for record in self:
+            record.status = 'accepted'
+            record.property_id.selling_price = record.price
+            record.property_id.buyer_id = record.partner_id
+            record.property_id.state = 'offer accepted'
+        return True
+
+    def action_reject_offer(self):
+        for record in self:
+            record.status = 'refused'
+        return True
+
+    # === CONSTRAINT METHODS ===#
+
+    @api.constrains('price')
+    def _check_price(self):
+        for record in self:
+            existing_offers = record.property_id.offer_ids.filtered(lambda o: o != record)
+            if existing_offers:
+                min_price = min(existing_offers.mapped('price'))
+                if record.price < min_price:
+                    error_message = "The offer price can't be lower than existing offers!"
+                    raise UserError(error_message)
+
+    # === CRUD OVERRIDES ===#
+
+    @api.model
+    def create(self, vals):
+        offer = super().create(vals)
+        offer.property_id.state = 'offer received'
+        return offer

estate/models/estate_property_tag.py

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+from odoo import fields, models
+
+
+class PropertyTag(models.Model):
+    _name = "estate.property.tag"
+    _description = "An estate property tag model"
+    _order = "name asc"
+
+    # === FIELDS ===#
+
+    name = fields.Char(
+        required=True)
+    color = fields.Integer()
+
+    _check_name = models.Constraint(
+        'unique(name)',
+        'The tag name must be unique!',
+    )

estate/models/estate_property_type.py

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+from odoo import api, fields, models
+
+
+class PropertyType(models.Model):
+    _name = "estate.property.type"
+    _description = "An estate property type model"
+    _order = "name asc"
+
+    # === FIELDS ===#
+
+    name = fields.Char(
+        required=True)
+    property_ids = fields.One2many(
+        "estate.property",
+        "property_type_id")
+    sequence = fields.Integer(
+        'Sequence',
+        default=1)
+    offer_ids = fields.One2many(
+        "estate.property.offer",
+        "property_type_id",
+    )
+    offer_count = fields.Integer(
+        compute='_compute_offer_count',
+        string="Offers",
+    )
+
+    _check_name = models.Constraint(
+        'unique(name)',
+        'The property type name must be unique!',
+    )
+
+    # === COMPUTE METHODS ===#
+
+    @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', '=', 'new'), ('state', '=', '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,estate.property,model_estate_property,base.group_user,1,1,1,1
+access_estate_property_type,estate.property.type,model_estate_property_type,base.group_user,1,1,1,1
+access_estate_property_tag,estate.property.tag,model_estate_property_tag,base.group_user,1,1,1,1
+access_estate_property_offer,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_menu_root" name="Real Estate">
+        <menuitem id="estate_menu_advertisements" name="Advertisements">
+            <menuitem id="estate_menu_properties" action="estate_property_action"/>
+        </menuitem>
+        <menuitem id="estate_menu_settings" name="Settings">
+            <menuitem id="estate_menu_property_types" action="estate_property_type_action"/>
+            <menuitem id="estate_menu_property_tags" action="estate_property_tag_action"/>
+        </menuitem>
+    </menuitem>
+</odoo>