[ADD] estate: add new module app named as estate

estate/__init__.py

@@ -0,0 +1,4 @@
+# -*- coding: utf-8 -*-
+# Part of Odoo. See LICENSE file for full copyright and licensing details.
+
+from . import models

estate/__manifest__.py

@@ -0,0 +1,33 @@
+# -*- coding: utf-8 -*-
+# Part of Odoo. See LICENSE file for full copyright and licensing details.
+
+{
+    'name': 'Estate',
+    'summary': """
+        Starting module for "Server framework 101, chapter 2: Build an estate app"
+    """,
+
+    'description': """
+        Starting module for "Server framework 101, chapter 2: Build an estate app"
+    """,
+
+    'author': "Odoo",
+    'website': "https://www.odoo.com/",
+    'category': 'Tutorials/Estate',
+    'version': '0.1',
+    'application': True,
+    'installable': True,
+    'depends': ['base', 'web'],
+
+    'data': [
+            'security/ir.model.access.csv',
+            'views/res_users_views.xml',
+            'views/estate_property_views.xml',
+            'views/estate_property_type_views.xml',
+            'views/estate_property_tag_views.xml',
+            'views/estate_property_offer_views.xml',
+            'views/estate_menu_views.xml'
+            ],
+
+    'license': 'AGPL-3'
+}

estate/models/__init__.py

@@ -0,0 +1,8 @@
+# -*- coding: utf-8 -*-
+# Part of Odoo. See LICENSE file for full copyright and licensing details.
+
+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

@@ -0,0 +1,147 @@
+# -*- coding: utf-8 -*-
+# Part of Odoo. See LICENSE file for full copyright and licensing details.
+
+from odoo import models, fields, api, _
+from datetime import timedelta
+from odoo.exceptions import UserError, ValidationError
+
+class Property(models.Model):
+    _name = "estate.property"
+    _description = "Estate property details"
+    _order = "id desc"
+
+    name = fields.Char(string='Name', required=True)
+    description = fields.Text(string='Description')
+
+    postcode = fields.Char(string='Postal code')
+
+    date_availability = fields.Date(string='Availability Date', copy=False,
+                                    default=fields.Date.today()+timedelta(days=90))
+
+    expected_price = fields.Float(string='Expected Price', required=True, default=1.0)
+    selling_price = fields.Float(string='Selling Price', readonly=True, copy=False)
+    best_price = fields.Float(string='Best Offer', readonly=True, copy=False,
+                              compute="_compute_best_offer")
+
+    bedrooms = fields.Integer(string='Number of bedrooms', default=2)
+    living_area = fields.Integer()
+    facades = fields.Integer()
+    garage = fields.Boolean()
+
+    garden = fields.Boolean()
+    garden_area = fields.Integer()
+    garden_orientation = fields.Selection([('north', 'North'), ('south', 'South'),
+                                            ('east', 'East'), ('west', 'West')])
+
+    active = fields.Boolean(default=True)
+
+    state = fields.Selection([('new', 'New'), ('offer received', 'Offer Received'),
+                              ('offer accepted', 'Offer Accepted'), ('cancelled', 'Cancelled'),
+                              ('sold', 'Sold')],
+                               default="new",
+                               required=True,
+                               copy=False)
+
+    total_area = fields.Integer(string='Total Area (sqm)', compute="_compute_total_area",
+                                readonly=True, copy=False)
+
+    _sql_constraints = [
+        ('check_epxected_price', 'CHECK(expected_price > 0)', 'The expected price should be greater than 0.'),
+        ('check_selling_price', 'CHECK(selling_price >= 0)', 'The selling price should be greater than or equal to 0.')
+    ]
+
+    property_type_id = fields.Many2one(
+        'estate.property.type',
+        string="Type",
+        help="Select the category for this product"
+    )
+
+    property_seller_id = fields.Many2one(
+        'res.users',
+        string='Salesperson',
+        default=lambda self: self.env.user
+    ) 
+
+    property_buyer_id = fields.Many2one(
+        'res.partner',
+        string='Buyer',
+        copy=False
+    )
+
+    property_tag_ids = fields.Many2many(
+        'estate.property.tag',
+        copy=False
+    )
+
+    offer_ids = fields.One2many(
+        comodel_name='estate.property.offer',
+        inverse_name='property_id',
+        string="Offers",
+        copy=False
+    )
+
+    @api.ondelete(at_uninstall=False)
+    def _unlink_if_new_cancelled(self):
+        for record in self:
+            if record.state not in ['new', 'cancelled']:
+                raise UserError('Only new and cancelled properties can be deleted.')
+
+
+    @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_offer(self):
+        for record in self:
+            record.best_price = max(record.offer_ids.mapped('price')) if record.offer_ids else 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 = ''
+
+    @api.constrains('expected_price')
+    def _check_expected_price(self):
+        for record in self:
+            if record.expected_price <= 0:
+                raise ValidationError('The expected price must be greater than zero.')
+
+    @api.constrains('selling_price')
+    def _check_selling_price(self):
+        for record in self:
+            if record.selling_price < 0:
+                raise ValidationError('The selling price should be positive.')
+
+    @api.constrains('selling_price', 'expected_price')
+    def _check_selling_price_expected(self):
+        for record in self:
+            if record.selling_price < record.expected_price * 0.9 and (not (record.selling_price == 0)) :
+                raise ValidationError('The selling price should never be lower than 90 percent of the expected price.')
+
+    def action_cancel_the_property(self):
+        for record in self:
+            if record.state == 'sold':
+                raise UserError(_('Sold properties cannot be cancelled.'))
+            record.state = 'cancelled'
+        return True
+
+    def action_sell_the_property(self):
+        for record in self:
+            if record.state == 'cancelled':
+                raise UserError(_('Cancelled properties cannot be sold.'))
+            else:
+                record.state = 'sold'
+        return True
+
+    def set_property_state(self):
+        """
+        Set the state of a property to 'offer recieved'.
+        Will be called when an offer is created for a property.
+        """
+        self.state = 'offer received'

estate/models/estate_property_offer.py

@@ -0,0 +1,102 @@
+# -*- coding: utf-8 -*-
+# Part of Odoo. See LICENSE file for full copyright and licensing details.
+
+from odoo import models, fields, api, _
+from datetime import timedelta, datetime
+from odoo.exceptions import UserError, ValidationError
+
+class PropertyOffer(models.Model):
+    _name = "estate.property.offer"
+    _description = "Manage different offers from buyers for a specific property."
+    _order = "price desc"
+
+    price = fields.Float(string="Price", required=True, default=1.0)
+
+    validity = fields.Integer(string="Validity (days)", default=7)
+    date_deadline = fields.Date(string="Deadline", compute="_compute_deadline",
+                                inverse="_inverse_deadline")
+
+    status = fields.Selection([('accepted', 'Accepted'),
+                               ('refused', 'Refused')],
+                               copy=False)
+
+    _sql_constraints = [
+        ('check_offer_price', 'CHECK(price > 0)', 'The offer price should be greater than zero.')
+    ]
+
+    partner_id = fields.Many2one(
+        'res.partner',
+        string='Buyer',
+        required=True
+    )
+
+    property_id = fields.Many2one(
+        'estate.property',
+        string='Property',
+        required=True
+    )
+
+    property_type_id = fields.Many2one(
+        related='property_id.property_type_id',
+        store=True
+    )
+
+    @api.model_create_multi
+    def create(self, vals):
+        for record in vals:
+            if record.get('property_id'):
+                curr_prop = self.env['estate.property'].browse(record['property_id'])
+
+                if curr_prop.offer_ids:
+                    max_offer = max(curr_prop.offer_ids, key=lambda offer: offer.price)
+
+                    if record['price'] < max_offer.price:
+                        raise UserError(f"The offer must be higher then {max_offer.price}")
+
+                else:
+                    curr_prop.set_property_state()
+
+        return super().create(vals)
+
+    @api.depends("validity", "create_date")
+    def _compute_deadline(self):
+        for record in self:
+            create_date = record.create_date if record.create_date else datetime.now()
+            record.date_deadline = create_date + timedelta(days=record.validity)
+
+    @api.constrains('price')
+    def _check_offer_price(self):
+        for record in self:
+            if record.price <= 0:
+                raise ValidationError(_('The offer price should be greater than zero.')) 
+
+    def _inverse_deadline(self):
+        for record in self:
+            create_date = record.create_date if record.create_date else datetime.now()
+            record.validity = (record.date_deadline - create_date.date()).days
+
+    def accept_offer(self):
+        for record in self:
+            if record.status == 'accepted':
+                raise UserError(_('This offer has already been accepted.'))
+
+            offer_prop = record.property_id
+            accepted_off = offer_prop.offer_ids.filtered(lambda x: x.status == 'accepted')
+
+            if accepted_off:
+                raise UserError(_('This property has already accepted an offer.'))
+
+            offer_prop.property_buyer_id = record.partner_id
+            offer_prop.selling_price =record.price
+            offer_prop.state = 'offer accepted'
+
+            record.status = 'accepted'
+        return True
+
+    def reject_offer(self):
+        for record in self:
+            if record.status == 'accepted':
+                record.property_id.property_buyer_id = False
+                record.property_id.selling_price = 0
+            record.status = 'refused'
+        return True

estate/models/estate_property_tag.py

@@ -0,0 +1,16 @@
+# -*- coding: utf-8 -*-
+# Part of Odoo. See LICENSE file for full copyright and licensing details.
+
+from odoo import models, fields
+
+class PropertyTag(models.Model):
+    _name = "estate.property.tag"
+    _description = "Add different tags to a property like cozy, spacious, etc."
+    _order = "name"
+
+    name = fields.Char(string="Name", required=True)
+    color = fields.Integer()
+
+    _sql_constraints = [
+        ('unique_tag_name', 'UNIQUE(name)', 'Tag with this name already exists, try another name.')
+    ]

estate/models/estate_property_type.py

@@ -0,0 +1,32 @@
+# -*- coding: utf-8 -*-
+# Part of Odoo. See LICENSE file for full copyright and licensing details.
+
+from odoo import models, fields, api
+
+class PropertyType(models.Model):
+    _name = "estate.property.type"
+    _description = "Used to describe the type of the property i.e House, Apartment, etc."
+    _order = "name"
+
+    name = fields.Char(string="Name", required=True)
+    sequence = fields.Integer('Sequence', default=1)
+    offer_count = fields.Integer(compute="_compute_offer_count")
+
+    _sql_constraints = [
+        ('unique_type_name', 'UNIQUE(name)', 'Type with this name already exists, try another name.')
+    ]
+
+    property_ids = fields.One2many(
+        comodel_name='estate.property',
+        inverse_name='property_type_id'
+        )
+
+    offer_ids = fields.One2many(
+        comodel_name='estate.property.offer',
+        inverse_name='property_type_id'
+    )
+
+    @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

@@ -0,0 +1,13 @@
+# -*- coding: utf-8 -*-
+# Part of Odoo. See LICENSE file for full copyright and licensing details.
+
+from odoo import models, fields
+
+class Users(models.Model):
+    _inherit = 'res.users'
+
+    property_ids = fields.One2many(
+        comodel_name='estate.property',
+        inverse_name='property_seller_id',
+        domain=['|', ('state', '=', 'new'), ('state', '=', 'offer received')]
+    )

estate/security/ir.model.access.csv

@@ -0,0 +1,5 @@
+id,name,model_id/id,group_id/id,perm_read,perm_write,perm_create,perm_unlink
+access_estate_property,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_menu_views.xml

@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="utf-8"?>
+
+<odoo>
+    <menuitem id="estate_menu_root" name="Estate">
+        <menuitem id="estate_advertisements_menu" name="Advertisements">
+            <menuitem id="estate_properties" name="Properties" action="estate_property_action"/>
+        </menuitem>
+        <menuitem id="estate_settings_menu" name="Settings">
+            <menuitem id="estate_property_types" name="Types" action="estate_property_type_action"/>
+            <menuitem id="estate_property_tags" name="Tags" action="estate_property_tag_action"/>
+        </menuitem>
+    </menuitem>
+</odoo>