sevan - Technical Training

estate/__init__.py

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+from . import models

estate/__manifest__.py

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+{
+    'name': "Sevan Estate",
+    'license': 'LGPL-3',
+    'depends': ['base'],
+    'summary': "Just a simple estate app for Sevan.",
+    'application': True,
+    'installable': True,
+
+    'data': [
+        'security/ir.model.access.csv',
+
+        # Be careful with the order!
+        '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',
+    ],
+    'author': "Sevan Corp.",
+}

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 datetime import datetime
+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 Property(models.Model):
+    # Model definition
+    _name = "estate.property"
+    _description = "Estate Property"
+    _order = "id desc"
+    _check_expected_price = models.Constraint(
+        "CHECK(expected_price > 0)",
+        "The expected price should be strictly positive.",
+    )
+
+    # Fields
+    name = fields.Char("Title", required=True)
+    description = fields.Text()
+    postcode = fields.Char()
+    date_availability = fields.Date(
+        "Available From",
+        default=datetime.today() + relativedelta(months=3),
+        copy=False,
+    )
+    expected_price = fields.Float(required=True)
+    selling_price = fields.Float(
+        readonly=True,
+        copy=False,
+    )
+    bedrooms = fields.Integer(default=2)
+    living_area = fields.Integer("Living Area (sqm)")
+    facades = fields.Integer()
+    garage = fields.Boolean()
+    garden = fields.Boolean()
+    garden_area = fields.Integer("Garden Area (sqm)")
+    garden_orientation = fields.Selection(
+        string="Orientation",
+        selection=[
+            ("north", "North"),
+            ("south", "South"),
+            ("east", "East"),
+            ("west", "West"),
+        ],
+    )
+    total_area = fields.Integer("Total Area (sqm)", compute="_compute_total_area")
+    property_type_id = fields.Many2one("estate.property.type", string="Property Type")
+    buyer_id = fields.Many2one("res.partner", copy=False)
+    salesman_id = fields.Many2one("res.users", default=lambda self: self.env.user)
+    tag_ids = fields.Many2many("estate.property.tag", string="Tags")
+    offer_ids = fields.One2many("estate.property.offer", "property_id")
+    best_price = fields.Float(compute="_compute_best_price")
+    active = fields.Boolean(default=True)
+    state = fields.Selection(
+        selection=[
+            ("new", "New"),
+            ("offer_received", "Offer Received"),
+            ("offer_accepted", "Offer Accepted"),
+            ("sold", "Sold"),
+            ("cancelled", "Cancelled"),
+        ],
+        required=True,
+        copy=False,
+        default="new",
+        store=True,
+        compute="_compute_state",
+    )
+
+    @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_price(self):
+        for record in self:
+            record.best_price = max(record.offer_ids.mapped("price")) if record.offer_ids else 0.0
+
+    @api.depends("offer_ids")
+    def _compute_state(self):
+        for record in self:
+            if (record.state == "new" and len(record.offer_ids) > 0):
+                record.state = "offer_received"
+
+    @api.constrains("expected_price", "selling_price")
+    def _check_selling_price_to_expected_price_ratio(self):
+        for record in self:
+            if (not float_is_zero(record.selling_price, precision_digits=0) and
+            float_compare(record.selling_price, record.expected_price * 0.9, precision_digits=0) == -1):
+                raise ValidationError("The selling price should be at least 90% of the expected price.")
+
+    @api.onchange("garden")
+    def _onchange_garden_values(self):
+        self.garden_area = 10 if self.garden else 0
+        self.garden_orientation = "north" if self.garden else None
+
+    @api.ondelete(at_uninstall=False)
+    def _unlink(self):
+        for record in self:
+            if record.state in ("new", "cancelled"):
+                raise UserError("New or cancelled properties cannot be deleted.")
+        return super().unlink()
+
+    def action_cancel_property(self):
+        if self.state == "sold":
+            raise UserError("Sold properties cannot be cancelled.")
+        return self.write({
+            "state": "cancelled",
+        })
+
+    def action_sold_property(self):
+        if self.state == "cancelled":
+            raise UserError("Cancelled properties cannot be sold.")
+        return self.write({
+            "state": "sold",
+        })

estate/models/estate_property_offer.py

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+from datetime import datetime
+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
+
+
+class PropertyOffer(models.Model):
+    _name = "estate.property.offer"
+    _description = "Estate Property Offer"
+    _order = "price desc"
+    _check_price = models.Constraint(
+        'CHECK(price > 0.00)',
+        "The offer's amount should be strictly positive.",
+    )
+
+    price = fields.Float()
+    status = fields.Selection(
+        selection=[
+            ("accepted", "Accepted"),
+            ("refused", "Refused"),
+        ],
+        copy=False,
+    )
+    partner_id = fields.Many2one(
+        "res.partner",
+        string="Partner",
+        required=True,
+    )
+    property_id = fields.Many2one(
+        "estate.property",
+        string="Property",
+        required=True,
+    )
+    validity = fields.Integer("Validity (days)", default=7)
+    date_deadline = fields.Date("Deadline", compute="_compute_deadline", inverse="_inverse_deadline")
+    property_type_id = fields.Many2one("estate.property.type", store=True, related="property_id.property_type_id")
+
+    @api.depends("validity")
+    def _compute_deadline(self):
+        for record in self:
+            date = datetime.today() if not record.create_date else record.create_date.date()
+            record.date_deadline = date + relativedelta(days=record.validity)
+
+    def _inverse_deadline(self):
+        for record in self:
+            date = datetime.today() if not record.create_date else record.create_date.date()
+            record.validity = (record.date_deadline - date).days
+
+    @api.model
+    def create(self, vals_list):
+        for vals_dict in vals_list:
+            property_id = self.env["estate.property"].browse(vals_dict["property_id"])
+            offers = property_id.offer_ids
+            if (len(offers) > 0 and vals_dict["price"] < min(offers.mapped("price"))):
+                raise UserError("Offer with a lower value than an existing offer cannot be created.")
+        return super().create(vals_list)
+
+    def action_accept_offer(self):
+        for record in self:
+            if "accepted" in record.mapped("property_id.offer_ids.status"):
+                raise UserError("Only one offer can be accepted")
+            if (record.property_id.garden_orientation == "south" and
+            float_compare(record.property_id.expected_price, record.price, 2) == 1):
+                raise ValidationError("For properties with South oriented gardens, only offers having a price higher than the expected value of the property can be accepted")
+        return self.status.write({
+            "status": "accepted",
+        }) and self.property_id.write({
+            "state": "offer_accepted",
+            "selling_price": record.price,
+            "buyer_id": record.partner_id,
+        })
+
+    def action_refuse_offer(self):
+        return self.write({
+            "status": "refused",
+        })

estate/models/estate_property_tag.py

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+from odoo import fields, models
+
+
+class PropertyTag(models.Model):
+    _name = "estate.property.tag"
+    _description = "Estate Property Tag"
+    _order = "name"
+
+    name = fields.Char(required=True)
+    color = fields.Integer()
+
+    _check_tag_name_unique = models.Constraint(
+        'UNIQUE(name)',
+        'This tag already exists.',
+    )

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 = "Estate Property Type"
+    _order = "sequence, name"
+
+    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")
+
+    @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",
+        "salesman_id",
+        domain=[("state", "not in", ["sold", "cancelled"])]
+    )

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,1,1,1,0
+estate.access_estate_property_type,access_estate_property_type,estate.model_estate_property_type,base.group_user,1,1,1,0
+estate.access_estate_property_tag,access_estate_property_tag,estate.model_estate_property_tag,base.group_user,1,1,1,0
+estate.access_estate_property_offer,access_estate_property_offer,estate.model_estate_property_offer,base.group_user,1,1,1,0

estate/tests/__init__.py

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+from . import test_estate_property

estate/tests/test_estate_property.py

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+from odoo import Command
+from odoo.exceptions import ValidationError
+from odoo.tests import TransactionCase
+
+
+class TestEstateProperty(TransactionCase):
+
+    @classmethod
+    def setUpClass(cls):
+        super().setUpClass()
+        cls.estate = cls.env['estate.property'].create({
+            'name': 'Super test estate',
+            'expected_price': 100000.0,
+            'state': 'new',
+        })
+        cls.test_partner = cls.env['res.partner'].create({
+            'name': 'Maman ours',
+        })
+
+    def test_estate_best_price(self):
+        '''
+        Ensure best price is correctly updated when an offer is received.
+        '''
+        self.assertEqual(self.estate.best_price, 0.0)
+        self.estate.offer_ids = [Command.create({
+            'price': 125000.0,
+            'partner_id': self.test_partner.id,
+        })]
+        self.assertEqual(self.estate.best_price, 125000.0)
+
+    def test_accept_offer_south_facing_garden(self):
+        '''
+        Ensure offers for estates with south-facing gardens can only be accepted if above expected
+        price.
+        '''
+        self.estate.garden = True
+        self.estate.garden_orientation = 'south'
+        self.estate.expected_price = 500000
+        self.estate.offer_ids = [Command.create({
+            'price': 475000.0,
+            'partner_id': self.test_partner.id,
+        })]
+        with self.assertRaises(ValidationError):
+            self.estate.offer_ids.action_accept_offer()

estate/views/estate_menus.xml

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+<?xml version="1.0"?>
+<odoo>
+    <menuitem id="estate_menu_root" name="Sevan Estate">
+        <menuitem id="estate_first_level_menu" name="Advertisements">
+            <menuitem id="estate_menu_action" action="estate_property_action"/>
+        </menuitem>
+        <menuitem id="estate_settings_menu" name="Settings">
+            <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_list" model="ir.ui.view">
+        <field name="name">estate.property.offer.view.list</field>
+        <field name="model">estate.property.offer</field>
+        <field name="arch" type="xml">
+            <list editable="bottom" string="offers" decoration-success="status == 'accepted'"
+            decoration-danger="status == 'refused'">
+                <field name="price"/>
+                <field name="partner_id"/>
+                <field name="validity"/>
+                <field name="date_deadline"/>
+                <button name="action_accept_offer" string="Accept" type="object"
+                icon="fa-check" invisible="status"/>
+                <button name="action_refuse_offer" string="Refuse" type="object"
+                icon="fa-times" invisible="status"/>
+            </list>
+        </field>
+    </record>
+
+    <record id="estate_property_offer_view_form" model="ir.ui.view">
+        <field name="name">estate.property.offer.view.form</field>
+        <field name="model">estate.property.offer</field>
+        <field name="arch" type="xml">
+            <form>
+                <sheet>
+                    <group>
+                        <group>
+                            <field name="price"/>
+                            <field name="partner_id"/>
+                            <field name="validity"/>
+                            <field name="date_deadline"/>
+                        </group>
+                    </group>
+                </sheet>
+            </form>
+        </field>
+    </record>
+
+    <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>
+</odoo>