[ADD] estate: defines a new app for estate properties

estate/__init__.py

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+from . import models

estate/__manifest__.py

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+{
+    'name': 'Real Estate',
+    'version': '0.0',
+    'category': 'Sale/estate',
+    'summary': 'Manage your Real Estate Assets',
+    'license': 'LGPL-3',
+    'application': True,
+    'installable': True,
+    'depends': ['base'],
+    'data': [
+        'security/ir.model.access.csv',
+        'views/estate_property_views.xml',
+        'views/estate_property_tag_views.xml',
+        'views/estate_property_type_offer.xml',
+        'views/estate_property_type_views.xml',
+        'views/estate_user_views.xml',
+        'views/estate_menus.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 estate_user

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
+
+
+class TestModel(models.Model):
+    _name = 'estate.property'
+    _description = 'Test Estate Model'
+    _order = 'id desc'
+
+    name = fields.Char(required=True)
+    description = fields.Text()
+    postcode = fields.Char()
+    date_availability = fields.Date(default=fields.Date.today() + relativedelta(months=3), copy=False)
+    expected_price = fields.Float(required=True)
+    selling_price = fields.Float(readonly=False, copy=False)
+    bedrooms = fields.Integer(default=2)
+    living_area = fields.Integer(string='Living Area (sqm)')
+    facades = fields.Integer()
+    garage = fields.Boolean()
+    garden = fields.Boolean()
+    garden_area = fields.Integer(string='Garden Area (sqm)')
+    garden_orientation = fields.Selection(
+        string='Garden Orientation',
+        selection=[('north', 'North'), ('south', 'South'), ('east', 'East'), ('west', 'West')],
+    )
+    active = fields.Boolean(default=True)
+    state = fields.Selection(
+        string='State',
+        selection=[
+            ('new', 'New'),
+            ('offer_received', 'Offer Received'),
+            ('offer_accepted', 'Offer Accepted'),
+            ('sold', 'Sold'),
+            ('cancelled', 'Cancelled'),
+        ],
+        default='new',
+        readonly=True,
+    )
+    property_type_id = fields.Many2one('estate.property.type', string='Property Type')
+    seller_id = fields.Many2one('res.users', string='Salesman', default=lambda self: self.env.user)
+    buyer_id = fields.Many2one('res.partner', string='Buyer', copy=False, readonly=True)
+    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', string='Total Area (sqm)')
+    best_price = fields.Float(compute='_compute_best_price')
+
+    _sql_constraints = [
+        ('check_expected_price', 'CHECK(expected_price > 0)', 'The expected price must be a strictly positive value.'),
+        ('check_selling_price', 'CHECK(selling_price >= 0)', 'The expected price must be a positive value'),
+        ('unique_tag_name_and_type', 'UNIQUE(name, property_type_id)', 'The Name and the type should be unique.'),
+    ]
+
+    @api.constrains('selling_price')
+    def _check_date_end(self):
+        for record in self:
+            if record.state == 'offer_accepted' and float_compare(record.selling_price, 0.9 * record.expected_price, 2):
+                raise UserError(self.env._('the seeling price must be atleast 90% of the expected price.'))
+
+    @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')) if record.offer_ids else 0.0
+
+    @api.onchange('garden')
+    def _onchange_garden(self):
+        for record in self:
+            if record.garden:
+                record.garden_area = 10
+                record.garden_orientation = 'north'
+            else:
+                record.garden_area = 0
+                record.garden_orientation = ''
+
+    def action_sell_property(self):
+        for record in self:
+            if record.state == 'cancelled':
+                raise UserError(self.env._('Cancelled properties cant be sold'))
+            else:
+                record.state = 'sold'
+        return True
+
+    def action_cancel_property(self):
+        for record in self:
+            if record.state == 'sold':
+                raise UserError(self.env._('Sold properties cant be cancelled'))
+            else:
+                record.state = 'cancelled'
+        return True
+
+    @api.model
+    def ondelete(self):
+        if self.state in ['new', 'cancelled']:
+            return super().ondelete()
+        raise UserError(self.env._('You cannot delete a property unless cancelled.'))

estate/models/estate_property_offer.py

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+from datetime import timedelta
+
+from odoo import api, fields, models
+from odoo.exceptions import UserError
+
+
+class TestModel(models.Model):
+    _name = 'estate.property.offer'
+    _description = 'Estate Model Offer'
+    _order = 'price desc'
+
+    price = fields.Float(default=0.00)
+    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)
+    validity = fields.Integer(compute='_compute_validity', inverse='_inverse_validity', string='Validity (days)')
+    date_deadline = fields.Date(string='Deadline')
+    property_type_id = fields.Many2one(related='property_id.property_type_id', string='Property Type', store=True)
+
+    _sql_constraints = [
+        ('check_offer_price', 'CHECK(price > 0)', 'The offer price must be a strictly positive value.'),
+    ]
+
+    @api.depends('date_deadline')
+    def _compute_validity(self):
+        for record in self:
+            if record.date_deadline:
+                record.validity = (record.date_deadline - fields.Date.today()).days
+            else:
+                record.validity = 0
+
+    def _inverse_validity(self):
+        for record in self:
+            record.date_deadline = fields.Date.today()
+            if record.validity:
+                record.date_deadline += timedelta(days=record.validity)
+
+    def action_accept_offer(self):
+        for record in self:
+            if record.property_id.state in ['new', 'offer_received'] and record.status != 'refused':
+                record.property_id.selling_price = record.price
+                record.status = 'accepted'
+                record.property_id.state = 'offer_accepted'
+            else:
+                message = {
+                    'sold': 'cannot accept an offer on a sold property',
+                    'cancelled': 'cannot accept an offer on a cancelled property',
+                    'offer_accepted': 'cannot accept another offer on an accepted property',
+                }
+                raise UserError(self.env._(message[record.property_id.state]))
+        return True
+
+    def action_refuse_offer(self):
+        for record in self:
+            record.status = 'refused'
+        return True
+
+    @api.model_create_multi
+    def create(self, vals):
+        for val in vals:
+            if val['price'] <= self.env['estate.property'].browse(val['property_id']).best_price:
+                raise UserError(self.env._('The offer price must be greater than the best offer.'))
+
+            if self.env['estate.property'].browse(val['property_id']).state == 'new':
+                self.env['estate.property'].browse(val['property_id']).state = 'offer_received'
+        return super().create(vals)

estate/models/estate_property_tag.py

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+from odoo import fields, models
+
+
+class TestModel(models.Model):
+    _name = 'estate.property.tag'
+    _description = 'Estate Model Tag'
+    _order = 'name'
+
+    name = fields.Char(required=True)
+    color = fields.Integer()

estate/models/estate_property_type.py

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+from odoo import api, fields, models
+
+
+class TestModel(models.Model):
+    _name = 'estate.property.type'
+    _description = 'Estate Model Type'
+    _order = 'name'
+
+    name = fields.Char(required=True)
+    property_ids = fields.One2many('estate.property', 'property_type_id', string='Properties')
+    sequence = fields.Integer('Sequence', default=1)
+    offer_ids = fields.One2many('estate.property.offer', 'property_type_id', string='Offers')
+    offer_count = fields.Integer(compute='_compute_offer_count', string='Offers Count')
+
+    @api.depends('offer_ids')
+    def _compute_offer_count(self):
+        for record in self:
+            record.offer_count = len(record.offer_ids)

estate/models/estate_user.py

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+from odoo import fields, models
+
+
+class TestModel(models.Model):
+    _inherit = 'res.users'
+
+    property_ids = fields.One2many('estate.property', 'seller_id', string='Properties')

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_menus.xml

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+<?xml version="1.0"?>
+<odoo>
+    <menuitem id="estate_menu_root" name="Estate">
+        <menuitem id="estate_advertisements_menu" name="Advertisements">
+            <menuitem id="estate_property_estates" action="estate.estate_property_action" />
+        </menuitem>
+        <menuitem id="estate_settings_menu" name="Settings">
+            <menuitem id="estate_property_type" action="estate.estate_property_type_action" />
+            <menuitem id="estate_property_tag" action="estate.estate_property_tag_action" />
+        </menuitem>
+    </menuitem>
+</odoo>

estate/views/estate_property_tag_views.xml

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+<?xml version="1.0"?>
+<odoo>
+    <record id="estate_property_tag_view_form" model="ir.ui.view">
+        <field name="name">estate.property.tag.view.form</field>
+        <field name="model">estate.property.tag</field>
+        <field name="arch" type="xml">
+            <form string="property tag form">
+                <sheet>
+                    <group>
+                        <field name="name" />
+                    </group>
+                </sheet>
+            </form>
+        </field>
+    </record>
+
+    <record id="estate_property_tag_view_list" model="ir.ui.view">
+        <field name="name">estate.property.tag.view.list</field>
+        <field name="model">estate.property.tag</field>
+        <field name="arch" type="xml">
+            <list string="property tag list" editable="bottom">
+                <field name="name" />
+            </list>
+        </field>
+    </record>
+
+    <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>
+</odoo>

estate/views/estate_property_type_offer.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 string="offers list" editable="bottom" 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" type="object" icon="fa-check" title="accept"
+                    invisible="status" />
+                <button name="action_refuse_offer" type="object" icon="fa-close" title="refuse"
+                    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 string="property offer form">
+                <sheet>
+                    <group>
+                        <field name="price" />
+                        <field name="status" />
+                        <field name="partner_id" />
+                        <field name="validity" />
+                        <field name="date_deadline" />
+                    </group>
+                </sheet>
+            </form>
+        </field>
+    </record>
+
+    <record id="estate_property_offer_action" model="ir.actions.act_window">
+        <field name="name">Property Offer</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>

estate/views/estate_property_type_views.xml

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+<?xml version="1.0"?>
+<odoo>
+    <record id="estate_property_type_view_form" model="ir.ui.view">
+        <field name="name">estate.property.type.view.form</field>
+        <field name="model">estate.property.type</field>
+        <field name="arch" type="xml">
+            <form string="property type form">
+                <sheet>
+                    <field name="name" class="display-4" />
+                    <button type="action" name="%(estate_property_offer_action)d" string="Offers"/>
+                    <notebook>
+                        <page string="Properties">
+                            <field name="property_ids" />
+                        </page>
+                    </notebook>
+                </sheet>
+            </form>
+        </field>
+    </record>
+
+    <record id="estate_property_type_view_list" model="ir.ui.view">
+        <field name="name">estate.property.type.view.list</field>
+        <field name="model">estate.property.type</field>
+        <field name="arch" type="xml">
+            <list string="property type list">
+                <field name="name" string="Name" />
+                <field name="offer_ids" string="Offers" />
+                <field name="offer_count" string="Offers Count" />
+                <field name="sequence" string="Sequence" />
+            </list>
+        </field>
+    </record>
+
+    <record id="estate_property_type_action" model="ir.actions.act_window">
+        <field name="name">Property Types</field>
+        <field name="res_model">estate.property.type</field>
+        <field name="view_mode">list,form</field>
+    </record>
+</odoo>