[ADD] estate: Added a new module named estate

estate/__init__.py

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+from . import models

estate/__manifest__.py

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+{
+    'name': 'Real Estate',
+    'depends':
+        ['base'],
+    'data': [
+        'security/ir.model.access.csv',
+        'views/estate_property_type_views.xml',
+        'views/estate_property_tag_views.xml',
+        'views/estate_property_offer_views.xml',
+        'views/estate_property_views.xml',
+        'views/res_users_views.xml',
+        'views/estate_menu.xml',
+    ],
+    'installable': True,
+    'application': True,
+    'license': 'AGPL-3',
+}

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"
+    _sql_constraints = [
+        ("check_expected_price", "CHECK(expected_price > 0)",
+         "The expected price must be strictly positive"),
+        ("check_sell_price", "CHECK(selling_price > 0)",
+         "The selling price of a property must be positive")
+    ]
+    _order = "id desc"
+
+    name = fields.Char('name', required=True)
+    description = fields.Text('description')
+    postcode = fields.Char('postcode')
+    availability_date = fields.Date('availabilty date', copy=False,
+                                    default=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')
+    garden_orientation = fields.Selection(
+        string='Garden Orientation',
+        selection=[
+            ('north', 'North'),
+            ('south', 'South'),
+            ('east', 'East'),
+            ('west', 'West')
+        ],
+    )
+    active = fields.Boolean('active', default=True)
+    state = fields.Selection(
+        string='State',
+        selection=[
+            ('new', 'New'),
+            ('offer_received', 'Offer Received'),
+            ('offer_accepted', 'Offer Acccepted'),
+            ('sold', 'Sold'),
+            ('cancelled', 'Cancelled')
+        ],
+        default="new",
+    )
+    property_type_id = fields.Many2one("estate.property.type", string="property type")
+    user_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", string="Offers")
+    total_area = fields.Integer(compute='_compute_total_area')
+    best_offer = fields.Float(compute="_compute_best_offer")
+
+    @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")
+    def _compute_best_offer(self):
+        for record in self:
+            record.best_offer = 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 = None
+
+    def action_sell(self):
+        if "cancelled" in self.mapped('state'):
+            raise UserError("You can't sell a cancelled property")
+        self.state = "sold"
+        return True
+
+    def action_cancel(self):
+        if "sold" in self.mapped('state'):
+            raise UserError("You can't cancel a sold property")
+        self.state = "cancelled"
+        return True
+
+    @api.constrains("selling_price", "expected_price")
+    def _check_selling_price(self):
+        for record in self:
+            if not float_is_zero(record.selling_price, 2) and \
+                float_compare(record.selling_price, 0.9 * record.expected_price, 2) < 0:
+                raise ValidationError("The selling price has to be at least 90% of the expected price")
+
+    @api.ondelete(at_uninstall=False)
+    def _unlink_if_new_or_cancelled(self):
+        if any(x in self.mapped("state") for x in ["offer_received", "offer_accepted", "sold"]):
+            raise UserError("You can only delete a new or cancelled property")

estate/models/estate_property_offer.py

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+from dateutil.relativedelta import relativedelta
+from odoo import api, models, fields
+from odoo.exceptions import UserError
+
+
+class EstatePropertyOffer(models.Model):
+    _name = "estate.property.offer"
+    _description = "Estate property offer"
+    _sql_constraints = [
+        ("check_price", "CHECK(price > 0)", "The offer price must be strictly positive")
+    ]
+    _order = "price desc"
+
+    price = fields.Float('price')
+    status = fields.Selection(
+        string='status',
+        selection=[
+            ('accepted', 'Accepted'),
+            ('refused', 'Refused')
+        ],
+    )
+    partner_id = fields.Many2one('res.partner', required=True)
+    property_id = fields.Many2one('estate.property', required=True)
+    validity = fields.Integer(default=7)
+    date_deadline = fields.Date(compute="_compute_date_deadline", inverse="_inverse_date_deadline")
+    property_type_id = fields.Many2one(related="property_id.property_type_id")
+
+    @api.depends("validity", "create_date")
+    def _compute_date_deadline(self):
+        for record in self:
+            start_date = record.create_date.date() if record.create_date else fields.Date.today()
+            record.date_deadline = start_date + \
+                relativedelta(days=record.validity)
+
+    def _inverse_date_deadline(self):
+        for record in self:
+            start_date = record.create_date.date() if record.create_date else fields.Date.today()
+            record.validity = (record.date_deadline - start_date).days
+
+    def action_accept(self):
+        for record in self:
+            if record.property_id.buyer_id:
+                raise UserError("You already accepted an offer")
+            if record.status == "refused":
+                raise UserError("You already refused this offer")
+            record.status = "accepted"
+            record.property_id.selling_price = record.price
+            record.property_id.buyer_id = record.partner_id
+            record.property_id.state = "offer_accepted"
+
+    def action_refuse(self):
+        for record in self:
+            if record.status == "accepted":
+                raise UserError("You already accepted this offer")
+            record.status = "refused"
+
+    @api.model_create_multi
+    def create(self, vals):
+        for val in vals:
+            property_record = self.env["estate.property"].browse(val["property_id"])
+            if val["price"] < property_record.best_offer:
+                raise UserError(f"Your offer can't be lower than {property_record.best_offer}")
+
+            property_record.state = "offer_received"
+        return super().create(vals)

estate/models/estate_property_tag.py

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

estate/models/estate_property_type.py

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+from odoo import api, models, fields
+
+
+class EstatePropertyType(models.Model):
+    _name = "estate.property.type"
+    _description = "Estate property type"
+    _sql_constraints = [
+        ("check_unique_name", "UNIQUE(name)", "Property type name must be unqie")
+    ]
+    _order = "sequence, name"
+
+    name = fields.Char('name', required=True)
+    property_ids = fields.One2many("estate.property", "property_type_id")
+    sequence = fields.Integer("sequence")
+    offer_ids = fields.One2many("estate.property.offer", "property_type_id")
+    offer_count = fields.Integer(compute="_compute_offer_count")
+
+    @api.depends("offer_ids")
+    def _compute_offer_count(self):
+        self.offer_count = len(self.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", "user_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_menu.xml

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+<odoo>
+    <menuitem id="estate_root_menu" name="Real Estate">
+        <menuitem id="estate_advertisement_menu" name="Advertisements">
+            <menuitem id="estate_property_action_menu" action="estate_property_action"></menuitem>
+        </menuitem>
+        <menuitem id="estate_type_settings_menu" name="Settings">
+            <menuitem id="estate_property_type_action_menu" action="estate_property_type_action"></menuitem>
+            <menuitem id="estate_property_tag_action_menu" action="estate_property_tag_action"></menuitem>
+        </menuitem>
+    </menuitem>
+</odoo>

estate/views/estate_property_offer_views.xml

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+<odoo>
+    <record id="estate_property_offer_action" model="ir.actions.act_window">
+        <field name="name">Property 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_view_list" model="ir.ui.view">
+        <field name="name">properties.view.offer.list</field>
+        <field name="model">estate.property.offer</field>
+        <field name="arch" type="xml">
+            <list string="properties offer list" editable="bottom" decoration-success="status=='accepted'" decoration-danger="status=='refused'">
+                <field name="price"/>
+                <field name="validity"/>
+                <field name="date_deadline"/>
+                <field name="partner_id"/>
+                <field name="property_type_id"/>
+                <button name="action_accept" string = "accept" type="object" icon="fa-check" invisible="status in ['accepted', 'refused']"/>
+                <button name="action_refuse" string = "refuse" type="object" icon="fa-times" invisible="status in ['accepted', 'refused']"/>
+            </list>
+        </field>
+    </record>
+
+    <record id="estate_property_offer_view_form" model="ir.ui.view">
+        <field name="name">properties.view.offer.form</field>
+        <field name="model">estate.property.offer</field>
+        <field name="arch" type="xml">
+            <form string="properties offer from">
+                <sheet>
+                    <group>
+                        <group>
+                            <field name="validity"/>
+                            <field name="date_deadline"/>
+                        </group>
+                        <group>
+                            <field name="price"/>
+                            <field name="status"/>
+                            <field name="partner_id"/>
+                        </group>
+                    </group>
+                </sheet>
+            </form>
+        </field>
+    </record>
+</odoo>

estate/views/estate_property_tag_views.xml

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+<odoo>
+    <record id="estate_property_tag_action" model="ir.actions.act_window">
+        <field name="name">Property Tags</field>
+        <field name="res_model">estate.property.tag</field>
+        <field name="view_mode">list,form</field>
+    </record>
+
+    <record id="estate_property_tag_view_list" model="ir.ui.view">
+        <field name="name">properties.view.tag.list</field>
+        <field name="model">estate.property.tag</field>
+        <field name="arch" type="xml">
+            <list string="properties tag list" editable="bottom">
+                <field name="name"/>
+            </list>
+        </field>
+    </record>
+
+    <record id="estate_property_tag_view_form" model="ir.ui.view">
+        <field name="name">properties.view.tag.form</field>
+        <field name="model">estate.property.tag</field>
+        <field name="arch" type="xml">
+            <form string="properties tag from">
+                <sheet>
+                    <h1>
+                        <field name="name"/>
+                    </h1>
+                </sheet>
+            </form>
+        </field>
+    </record>
+
+    <record id="estate_property_tag_search" model="ir.ui.view">
+        <field name="name">properties.tag.search</field>
+        <field name="model">estate.property.tag</field>
+        <field name="arch" type="xml">
+            <search string="property tag search">
+                <field name="name"/>
+            </search>
+        </field>
+    </record>
+</odoo>