[ADD] estate : Add Estate Module

estate/__init__.py

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+from . import models

estate/__manifest__.py

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+{
+    'name': 'Real Estate',
+    'description': 'Welcome to my Real Estate',
+    'author': 'KRPAT',
+    'website': 'https://www.odoo.com/',
+    'category': 'Tutorials',
+    'version': '1.0',
+    'license': 'LGPL-3',
+    'depends': ['base'],
+    'data': [
+        'security/ir.model.access.csv',
+        'views/estate_property_offer_views.xml',
+        'views/estate_property_views.xml',
+        'views/estate_property_type_views.xml',
+        'views/estate_property_tag_views.xml',
+        'views/estate_menus.xml',
+        'views/res_users_views.xml',
+    ],
+}

estate/models/__init__.py

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+from . import estate_property
+from . import estate_property_type
+from . import estate_property_tag
+from . import estate_property_offer
+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, ValidationError
+from odoo.tools.float_utils import float_compare, float_is_zero
+
+
+class EstateProperty(models.Model):
+    _name = "estate.property"
+    _description = "Estate Property"
+    _order = "id desc"
+
+    name = fields.Char(required=True)
+    description = fields.Text()
+    postcode = fields.Char()
+
+    date_availability = fields.Date(
+        copy=False,
+        default=lambda self: fields.Date.today() + relativedelta(months=3),
+    )
+
+    expected_price = fields.Float(required=True)
+    selling_price = fields.Float(readonly=True, copy=False)
+    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=[
+            ("north", "North"),
+            ("south", "South"),
+            ("east", "East"),
+            ("west", "West"),
+        ],
+        string="Garden Orientation",
+    )
+    active = fields.Boolean(default=True)
+    state = fields.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", string="Property Type")
+    buyer_id = fields.Many2one(
+        "res.partner",
+        string="Buyer",
+        copy=False,
+    )
+    user_id = fields.Many2one(
+        "res.users", string="Salesman", 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",
+    )
+    salesperson_id = fields.Many2one(
+        "res.users", string="Salesperson", default=lambda self: self.env.user
+    )
+    total_area = fields.Float(
+        compute="_compute_total_area", string="Total Area", readonly=False
+    )
+    best_price = fields.Float(
+        compute="_compute_best_price", string="Best Offer", store=True
+    )
+    _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"
+    )
+
+    @api.ondelete(at_uninstall=False)
+    def _unlink_if_allowed(self):
+        for record in self:
+            if record.state not in ("new", "cancelled"):
+                raise ValidationError(
+                    _("You can only delete properties that are New or Cancelled.")
+                )
+
+    @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):
+        if self.filtered(lambda x: x.state == "cancelled"):
+            raise UserError(_("A cancelled Property cannot be sold."))
+        self.write({"state": "sold"})
+
+    def action_cancel(self):
+        if self.filtered(lambda x: x.state == "sold"):
+            raise UserError(_("A sold Property cannot be cancelled."))
+        self.write({"state": "cancelled"})
+
+    @api.constrains("expected_price", "selling_price")
+    def _check_selling_price(self):
+        for record in self:
+            if float_is_zero(record.selling_price, precision_rounding=0.01):
+                continue
+            min_price = record.expected_price * 0.9
+            if float_compare(record.selling_price, min_price, precision_rounding=0.01) < 0:
+                raise ValidationError("The selling price cannot be lower than 90% of the expected price.")
+
+    def accept_best_price(self):
+        for record in self:
+            if not record.offer_ids:
+                raise UserError("There are no offers to accept.")
+
+            best_offer = max(record.offer_ids, key=lambda t: t.price)
+            record.offer_ids.write({"status": "refused"})
+            best_offer.write({"status": "accepted"})
+
+            record.selling_price = record.best_price
+            record.buyer_id = best_offer.partner_id
+        return True

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, ValidationError
+
+
+class EstatePropertyOffer(models.Model):
+    _name = "estate.property.offer"
+    _description = "Estate Property Offer"
+    _order = "price desc"
+
+    price = fields.Float(string="Price")
+    status = fields.Selection(
+        [
+            ("accepted", "Accepted"),
+            ("refused", "Refused"),
+        ],
+        string="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"
+    )
+    property_type_id = fields.Many2one(
+        "estate.property.type",
+        related="property_id.property_type_id",
+        store=True,
+        readonly=True,
+    )
+    validity = fields.Integer(default=7, string="Validity (days)")
+    date_deadline = fields.Date(
+        compute="_compute_date_deadline",
+        inverse="_inverse_date_deadline",
+        string="Deadline",
+    )
+
+    @api.depends("validity", "create_date")
+    def _compute_date_deadline(self):
+        for record in self:
+            create_date = record.create_date
+            if create_date:
+                record.date_deadline = create_date.date() + relativedelta(
+                    days=record.validity
+                )
+            else:
+                record.date_deadline = fields.Date.today() + relativedelta(
+                    days=record.validity
+                )
+
+    def _inverse_date_deadline(self):
+        for record in self:
+            if record.create_date and record.date_deadline:
+                record.validity = (
+                    record.date_deadline - record.create_date.date()
+                ).days
+
+    @api.model
+    def create(self, vals_list):
+        for vals in vals_list:
+            price = vals.get("price", 0.0)
+            property_id = vals.get("property_id")
+            property_rec = self.env["estate.property"].browse(property_id)
+            if not property_rec.exists():
+                raise ValidationError(_("Invalid Property."))
+
+            if property_rec.offer_ids:
+                max_offer = max(property_rec.offer_ids.mapped("price"))
+                if price <= max_offer:
+                    raise ValidationError(
+                        _("The offer must be higher than existing offers")
+                    )
+
+        offers = super().create(vals_list)
+        for i in offers:
+            i.property_id.state = "offer_received"
+
+        return offers
+
+    def action_accept(self):
+        for record in self:
+            if record.property_id.offer_ids.filtered(lambda o: o.status == "accepted"):
+                raise UserError("Only one offer can be accepted")
+            record.status = "accepted"
+            record.property_id.write(
+                {
+                    "buyer_id": record.partner_id,
+                    "selling_price": record.price,
+                    "state": "offer_accepted",
+                }
+            )
+            return True
+
+    def action_refuse(self):
+        self.write({"status": "refused"})
+        return True
+
+    _check_price = models.Constraint(
+        "CHECK(price > 0)", "The Offer price must be strictly positive"
+    )

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 Tag"
+    _order = "name"
+
+    name = fields.Char(string="Name", required=True)
+    color = fields.Integer()
+
+    _check_tag_name = models.Constraint(
+        "UNIQUE(name)", "The property tag name must be unique"
+    )

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 = "sequence, name"
+
+    name = fields.Char(required=True)
+    sequence = fields.Integer(default=10)
+    _check_type_name = models.Constraint(
+        "UNIQUE(name)", "The property type name must be unique"
+    )
+    property_ids = fields.One2many(
+        "estate.property",
+        "property_type_id",
+        string="Properties",
+    )
+    offer_ids = fields.One2many(
+        "estate.property.offer", "property_type_id", string="Offers"
+    )
+    offer_count = fields.Integer(compute="_compute_offer_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",
+        string="Owned Properties",
+        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,access_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" encoding="UTF-8"?>
+<odoo>
+    <data>
+        <menuitem id="estate_menu_root" name="Real Estate"/>
+        <menuitem id="estate_first_level_menu" name="Estate" parent="estate_menu_root"/>
+        <menuitem id="estate_property_menu_action" name="Properties" parent="estate_first_level_menu" action="estate_property_action"/>
+        <menuitem id="estate_settings_menu" name="Settings" parent="estate_menu_root"/>
+        <menuitem id="estate_property_type_menu_action" name="Property Types" parent="estate_settings_menu" action="estate_property_type_action"/>
+        <menuitem id="estate_property_tag_menu_action" name="Property Tags" parent="estate_settings_menu" action="estate_property_tag_action"/>
+    </data>
+</odoo>

estate/views/estate_property_offer_views.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<odoo>
+    <record id="estate_property_offer_action" 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>
+
+    <record id="estate_property_offer_list_view" 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  editable="bottom" decoration-danger="status == 'refused'" decoration-success="status == 'accepted'">
+                <field name="price"/>
+                <field name="partner_id"/>
+                <field name="property_id"/>
+                <field name="property_type_id"/>
+                <field name="validity" string="Validity(days)"/>
+                <field name="date_deadline"/>
+                <field name="status"/>
+            </list>
+        </field>
+    </record>
+
+    <record id="estate_property_offer_form_view" 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="Create Offers">
+                <sheet>
+                    <group>
+                        <field name="price"/>
+                        <field name="partner_id"/>
+                        <field name="status"/>
+                        <field name="validity" string="Validity(days)"/>
+                        <field name="date_deadline"/>
+                    </group>
+                </sheet>
+            </form>
+        </field>
+    </record>
+</odoo>