[ADD] estate: create real estate module

estate/__init__.py

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+
+from . import models

estate/__manifest__.py

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+{
+    'name': "Real estate",
+    'depends': [
+        'base'
+    ],
+    'data': [
+        'views/estate_property_offer_views.xml',
+        'views/estate_property_type_views.xml',
+        'views/estate_property_tag_views.xml',
+        'views/estate_property_views.xml',
+        'views/estate_menus.xml',
+        'views/res_user.xml',
+        'security/ir.model.access.csv',
+    ],
+    'application': True
+}

estate/models/__init__.py

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+from . import estate_property_type
+from . import estate_property_tag
+from . import estate_property_offer
+from . import estate_property
+from . import res_user

estate/models/estate_property.py

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+
+from dateutil.relativedelta import relativedelta
+from odoo import fields, models, api
+from odoo.exceptions import UserError, ValidationError
+from odoo.tools.float_utils import float_compare
+
+
+class EstateProperty(models.Model):
+    _name = "estate.property"
+    _description = "Properties of the estate model"
+    _order = "id desc"
+
+    active = fields.Boolean(default=True)
+    name = fields.Char("Title", required=True)
+    description = fields.Text("description")
+    postcode = fields.Integer("Post code")
+    date_availability = fields.Date(
+        "Date availability",
+        copy=False,
+        default=lambda S: fields.Date.today() + relativedelta(months=3))
+    expected_price = fields.Float("Expected price", required=True)
+    selling_price = fields.Float("Selling price", readonly=True, copy=False)
+    bedrooms = fields.Integer("# Bedrooms", default=2)
+    living_area = fields.Integer("Living area")
+    facades = fields.Integer("# facades")
+    garage = fields.Boolean("Garage")
+    garden = fields.Boolean("Garden")
+    garden_area = fields.Integer("Garden area", default=0)
+    garden_orientation = fields.Selection(
+        string="Orientation",
+        selection=[("north", "North"), ("east", "East"), ("west", "West"), ("south", "South")])
+    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_id = fields.Many2one("estate.property.type")
+    buyer = fields.Many2one("res.partner", copy=False)
+    salesperson = fields.Many2one("res.users", default=lambda self: self.env.user)
+    tag_ids = fields.Many2many("estate.property.tag")
+    offer_ids = fields.One2many("estate.property.offer", inverse_name="property_id")
+    total_area = fields.Float("Total Area", compute="_compute_area")
+    best_price = fields.Float("Best Price", compute="_find_best_price")
+
+    _sql_constraints = [
+        ('positive_expecting_price', "CHECK(expected_price > 0)", "Property should have a strictly positive expected price !"),
+        ("positive_sell_price", "CHECK(selling_price > 0)", "Property should have a strictly positive selling price !"),
+        ]
+
+    @api.depends("garden_area", "living_area")
+    def _compute_area(self):
+        for record in self:
+            record.total_area = record.living_area + record.garden_area
+
+    @api.depends("offer_ids")
+    def _find_best_price(self):
+        for record in self:
+            record.best_price = max(record.offer_ids.mapped("price"), default=0)
+
+    @api.onchange("garden")
+    def _onchange_garden(self):
+        if self.garden:
+            self.garden_area = 10
+            self.garden_orientation = "north"
+        else:
+            self.garden_area = None
+            self.garden_orientation = None
+
+    def action_sold(self):
+        for a_property in self:
+            if a_property.state not in ["cancelled"]:
+                a_property.state = "sold"
+            else:
+                raise UserError(self.env._("Property is already cancelled"))
+        return True
+
+    def action_cancel(self):
+        for a_property in self:
+            if a_property.state not in ["sold"]:
+                a_property.state = "cancelled"
+            else:
+                raise UserError(self.env._("Property is already sold"))
+        return True
+
+    @api.constrains("selling_price")
+    def _check_minimum_sell_price(self):
+        for a_property in self:
+            if float_compare(a_property.selling_price, a_property.expected_price * 0.9, 2) == -1:
+                raise ValidationError("The selling price can not be lower than 90% of the expected price")
+
+    @api.ondelete(at_uninstall=False)
+    def _unlink_if_new_or_cancelled(self):
+        if any(record.state not in ["new", "cancelled"] for record in self):
+            raise UserError(self.env._("Property should be New or Cancelled in order to be deleted"))

estate/models/estate_property_offer.py

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+from dateutil.relativedelta import relativedelta
+from odoo import fields, models, api
+from odoo.exceptions import UserError
+
+
+class EstatePropertyOffer(models.Model):
+    _name = "estate.property.offer"
+    _description = "Offre d'achat"
+    _order = "price desc"
+
+    price = fields.Float("price")
+    status = fields.Selection(copy=False, selection=[('accepted', 'Accepted'), ('refused', 'Refused')])
+    partner_id = fields.Many2one("res.partner", required=True)
+    property_id = fields.Many2one("estate.property", required=True)
+    date_deadline = fields.Date(default=lambda s:fields.Date.today() + relativedelta(days=7), compute="_compute_deadline", inverse="_update_validity")
+    validity = fields.Integer(default=7)
+    property_type_id = fields.Many2one(related="property_id.property_type_id", store=True)
+
+    _sql_constraints = [
+        ("positive_offer_price", "CHECK(price > 0)", "Offer should have a strictly positive price !")
+    ]
+
+    @api.depends("validity")
+    def _compute_deadline(self):
+        for record in self:
+            now = record.create_date
+            record.date_deadline = now + relativedelta(days=record.validity)
+
+    def _update_validity(self):
+        for offer in self:
+            offer.validity = (offer.date_deadline - offer.create_date.date()).days
+
+    def action_confirm(self):
+        for offer in self:
+            if offer.status == 'refused':
+                raise UserError("You cannot accept an offer that is already refused.")
+            other_offers = offer.property_id.offer_ids.filtered(lambda o: o.id != offer.id and o.status != 'refused')
+            other_offers.write({'status': 'refused'})
+            offer.write({'status': 'accepted'})
+            offer.property_id.write({
+                'buyer': offer.partner_id,
+                'selling_price': offer.price,
+            })
+        return True
+
+    def action_cancel(self):
+        for offer in self:
+            if offer.status == "accepted":
+                raise UserError(self.env._("Offer already accepted"))
+            offer.status = "refused"
+        return True
+
+    @api.model_create_multi
+    def create(self, vals_list):
+        properties = self.env['estate.property'].browse([vals['property_id'] for vals in vals_list])
+        property_map = {prop.id: prop for prop in properties}
+        for vals in vals_list:
+            prop = property_map.get(vals['property_id'])
+            if not prop:
+                raise UserError("Invalid property_id in offer.")
+            if prop.best_price and vals['price'] < prop.best_price:
+                raise UserError("The price of a new offer can't be below the price of an already existing offer.")
+        new_properties = properties.filtered(lambda p: p.state == 'new')
+        new_properties.write({'state': 'offer_received'})
+        return super().create(vals_list)

estate/models/estate_property_tag.py

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+from odoo import fields, models
+
+
+class EstatePropertyTag(models.Model):
+    _name = "estate.property.tag"
+    _description = "Tags used to describe a property"
+    _order = "name desc"
+
+    name = fields.Char("name", required=True)
+    color = fields.Integer()
+
+    _sql_constraints = [("unique_property_tag", "UNIQUE(name)", "Tag name must be unique !")]

estate/models/estate_property_type.py

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+from odoo import models, fields, api
+
+
+class EstatePropertyType(models.Model):
+    _name = "estate.property.type"
+    _description = "the type of an estate"
+    _order = "sequence,name desc"
+
+    name = fields.Char("Type", required=True)
+    property_ids = fields.One2many("estate.property", "property_type_id")
+    sequence = fields.Integer()
+    offer_ids = fields.One2many("estate.property.offer", "property_type_id")
+    offer_count = fields.Integer(compute="_count_offer")
+
+    _sql_constraints = [("unique_property_type", "UNIQUE(name)", "Type name must be unique !")]
+
+    @api.depends("offer_ids")
+    def _count_offer(self):
+        for record in self:
+            record.offer_count = len(record.offer_ids)

estate/models/res_user.py

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+from odoo import fields, models
+
+
+class User(models.Model):
+    _inherit = "res.users"
+
+    property_ids = fields.One2many("estate.property", inverse_name="salesperson")

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
+estate.access_estate_property,access_estate_property,estate.model_estate_property,base.group_user,1,1,1,1
+estate.access_estate_property_type,access_estate_property_type,estate.model_estate_property_type,base.group_user,1,1,1,1
+estate.access_estate_property_tag,access_estate_property_tag,estate.model_estate_property_tag,base.group_user,1,1,1,1
+estate.access_estate_property_offer,access_estate_property_offer,estate.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="Estate">
+        <menuitem id="estate_first_level_menu" name="Property">
+            <menuitem id="estate_menu_action" action="estate_property_action"/>
+        </menuitem>
+        <menuitem id="estate_type_first_level_menu" name="Estate Types">
+            <menuitem id="estate_type_menu_action" action="estate_property_type_action"/>
+            <menuitem id="estate_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_action_filter" model="ir.actions.act_window">
+        <field name="name">Offer</field>
+        <field name="res_model">estate.property.offer</field>
+        <!-- <field name="domain">[('property_type_id', '=', active_id)]</field> -->
+        <field name="view_mode">list,form</field>
+    </record>
+
+    <record id="estate_property_offer_action" model="ir.actions.act_window">
+        <field name="name">Show estate property offer</field>
+        <field name="res_model">estate.property.offer</field>
+        <field name="view_mode">list,form</field>
+    </record>
+
+    <!-- list view -->
+    <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>
+                <field name="price"/>
+                <field name="partner_id"/>
+                <field name="property_id"/>
+                <field name="status"/>
+            </list>
+        </field>
+    </record>
+
+    <!-- Form view -->
+    <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 Offer">
+                <sheet>
+                    <group>
+                    <field name="status"/>
+                    <field name="partner_id"/>
+                    <field name="property_id"/>
+                    <field name="price"/>
+                    <field name="date_deadline"/>
+                    <field name="create_date"/>
+                    </group>
+                    <group>
+                        <field name="validity"/>
+                    </group>
+                </sheet>
+            </form>
+        </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.view.search</field>
+        <field name="model">estate.property.tag</field>
+        <field name="arch" type="xml">
+            <search string="Search Property">
+                <field string="Title" name="name"/>
+            </search>
+        </field>
+    </record>
+
+    <record id="estate_property_tag_action" model="ir.actions.act_window">
+        <field name="name">Property Tag</field>
+        <field name="res_model">estate.property.tag</field>
+        <field name="view_mode">list,form</field>
+    </record>
+
+    <!-- list view -->
+    <record id="estate_property_tag_view_tree" 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 editable="bottom">
+                <field name="name"/>
+            </list>
+        </field>
+    </record>
+
+    <!-- Form view -->
+    <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">
+                <sheet>
+                    <h1><field name="name"/></h1>
+                </sheet>
+            </form>
+        </field>
+    </record>
+
+</odoo>