[ADD] estate: it creates a basic estate application

estate/__init__.py

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+from . import models

estate/__manifest__.py

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+{
+    'name': 'A real state module',
+    'version': '1.0',
+    'depends': ['base'],
+    'application': True,
+    'license': 'LGPL-3',
+    'data': [
+        'security/ir.model.access.csv',
+        'views/view_properties.xml',
+        'views/view_properties_type.xml',
+        'views/view_properties_tag.xml',
+        'views/estate_menus.xml',
+        'views/view_properties_user.xml',
+    ],
+}

estate/models/__init__.py

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+from . import estate_property
+from . import estate_property_offer
+from . import estate_property_tag
+from . import estate_property_type
+from . import estate_user

estate/models/estate_property.py

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+from dateutil.relativedelta import relativedelta
+from odoo import api, exceptions, fields, models
+from odoo.tools.float_utils import float_compare
+
+
+class EstateProperty(models.Model):
+    _name = 'estate.property'
+    _description = 'estate property module'
+    _order = 'id desc'
+
+    name = fields.Char(required=True)
+    description = fields.Text("Description")
+    date_availability = fields.Date(
+        "Date Availability", default=fields.Date.today() + relativedelta(months=3), copy=False
+    )
+    expected_price = fields.Float("Expected Price", required=True)
+    selling_price = fields.Float("Selling Price", default=0, readonly=True, copy=False)
+    bedrooms = fields.Integer(required=True, default=2)
+    living_area = fields.Integer("Living Area (sqm)", required=True)
+    facades = fields.Integer(default=0)
+    garage = fields.Boolean(default=False)
+    garden = fields.Boolean(default=False)
+    garden_area = fields.Integer("Garden Area (sqm)")
+    garden_orientation = fields.Selection([('north', 'North'), ('east', 'East'), ('south', 'South'), ('west', 'West')])
+    total_area = fields.Integer("Total Area (sqm)", compute='_compute_total_area')
+    postcode = fields.Integer()
+    active = fields.Boolean(default=True)
+    status = fields.Selection(
+        [
+            ('new', 'New'),
+            ('offer received', 'Offer Received'),
+            ('offer accepted', 'Offer Accepted'),
+            ('sold', 'Sold'),
+            ('cancelled', 'Cancelled'),
+        ],
+        default='new',
+        copy=False,
+    )
+    estate_type_id = fields.Many2one(comodel_name='estate.property.type')
+    estate_tag_ids = fields.Many2many(comodel_name='estate.property.tag')
+    estate_offer_ids = fields.One2many('estate.property.offer', 'property_id', string='Offers')
+    partner_id = fields.Many2one(comodel_name='res.partner')
+    user_id = fields.Many2one(comodel_name='res.users', default=lambda self: self.env.user)
+    best_offer = fields.Float(compute='_compute_best_price')
+    _sql_constraints = [
+        (
+            'check_stricly_positive_expected_price',
+            'CHECK(expected_price > 0)',
+            'The expected price of an estate property must be strictly positive.',
+        ),
+        (
+            'check_positive_selling_price',
+            'CHECK(selling_price >= 0)',
+            'The selling price of an estate property must be positive.',
+        ),
+    ]
+
+    @api.constrains('selling_price', 'expected_price')
+    def _check_valid_selling_price(self):
+        for record in self:
+            if not (any(offer.status == 'accepted' for offer in self.estate_offer_ids)):
+                continue
+
+            if float_compare(record.selling_price, 0.9 * record.expected_price, precision_digits=2) < 0:
+                raise exceptions.ValidationError("The selling price must not be below 90 % of the expected price")
+
+    @api.depends('garden_area', 'living_area')
+    def _compute_total_area(self):
+        for record in self:
+            record.total_area = record.garden_area + record.living_area
+
+    @api.depends('estate_offer_ids.price')
+    def _compute_best_price(self):
+        for record in self:
+            if len(record.estate_offer_ids) == 0:
+                record.best_offer = 0
+            else:
+                record.best_offer = max(record.estate_offer_ids.mapped('price'))
+
+    @api.onchange('garden')
+    def _onchange_partner_id(self):
+        if self.garden:
+            self.garden_orientation = 'north'
+            self.garden_area = 10
+        else:
+            self.garden_orientation = None
+            self.garden_area = 0
+
+    def action_cancel(self):
+        if self.status == 'sold':
+            raise exceptions.UserError('A sold property cannot be cancelled')
+
+        self.status = 'cancelled'
+
+    def action_sold(self):
+        if self.status == 'cancelled':
+            raise exceptions.UserError('A cancelled property cannot be sold')
+
+        self.status = 'sold'
+
+    @api.ondelete(at_uninstall=False)
+    def _unlink_if_estate_is_not_new_nor_cancelled(self):
+        if any(estate.status!='new' and estate.status!='cancelled' for estate in self):
+            raise exceptions.UserError('Can only delete new and cancelled records!')

estate/models/estate_property_offer.py

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+from dateutil.relativedelta import relativedelta
+from odoo import api, exceptions, fields, models
+
+
+class EstatePropertyOffer(models.Model):
+    _name = 'estate.property.offer'
+    _description = 'estate property offer module'
+    _order = 'price desc'
+
+    name = fields.Char(required=True)
+    price = fields.Float()
+    status = fields.Selection(
+        [
+            ('accepted', 'Accepted'),
+            ('refused', 'Refused'),
+        ],
+        copy=False,
+    )
+
+    validity = fields.Integer(default=7)
+    create_date = fields.Date(default=fields.Date.today(), readonly=True)
+    date_deadline = fields.Date(compute='_compute_deadline', inverse='_compute_inverse_deadline')
+
+    partner_id = fields.Many2one(comodel_name='res.partner', required=True)
+    property_id = fields.Many2one(comodel_name='estate.property', required=True)
+    property_type_id = fields.Many2one(comodel_name='estate.property.type', related='property_id.estate_type_id')
+
+    _sql_constraints = [
+        (
+            'check_stricly_positive_price',
+            'CHECK(price > 0)',
+            'The price of an estate property offer must be strictly positive.',
+        ),
+    ]
+
+    @api.depends('create_date', 'validity')
+    def _compute_deadline(self):
+        for record in self:
+            record.date_deadline = record.create_date + relativedelta(days=record.validity)
+
+    @api.model_create_multi
+    def create(self, val_list):
+        for val in val_list:
+            val_property_id = val.get('property_id')
+            val_curr_price = val.get('price')
+            property_id = self.env['estate.property'].browse(val_property_id)
+            if not property_id:
+                raise exceptions.ValidationError(
+                    f'Property with id {property_id} does not exist.Please contact the support'
+                )
+
+            if property_id.best_offer and property_id.best_offer > val_curr_price:
+                raise exceptions.UserError('The price of a new offer must be bigger than the best_price and'
+                    f' {property_id.best_offer} is bigger than {val_curr_price}')
+
+            if property_id.status == 'new':
+                property_id.status = 'offer received'
+
+        return super(EstatePropertyOffer, self).create(val_list)
+
+    @api.ondelete(at_uninstall=False)
+    def _unlink_and_reset_state_if_no_offer_left(self):
+        for offer in self:
+            property_id = offer.property_id
+            if len(property_id.estate_offer_ids) == 1 and property_id.status != 'cancelled':
+                property_id.status = 'new'   
+
+    def _compute_inverse_deadline(self):
+        for record in self:
+            record.validity = (record.date_deadline - record.create_date).days
+
+    def action_accepted(self):
+        if self.status == 'accepted':
+            return
+
+        if any(offer.status == 'accepted' for offer in self.property_id.estate_offer_ids):
+            raise exceptions.UserError('You can only accept one offer')
+
+        self.status = 'accepted'
+        self.property_id.selling_price = self.price
+        self.property_id.partner_id = self.partner_id
+        if self.status != 'sold':
+            self.property_id.status = 'offer accepted'
+
+    def action_refused(self):
+        if self.status == 'refuse':
+            return
+
+        if self.status == 'accepted':
+            self.property_id.selling_price = 0
+            self.property_id.partner_id = None
+
+        self.status = 'refused'

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 module'
+    _order = 'name'
+
+    name = fields.Char(required=True)
+    color = fields.Integer()
+
+    _sql_constraints = [
+        ('unique_tag_name', 'UNIQUE(name)',
+         'The 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 module'
+    _order = 'name'
+
+    name = fields.Char(required=True)
+    sequence = fields.Integer('Sequence', default=1, help="Used to order types. Lower is better.")
+    property_ids = fields.One2many('estate.property', 'estate_type_id')
+    offer_ids = fields.One2many('estate.property.offer', 'property_type_id')
+    offer_count = fields.Integer(compute='_compute_offer_count')
+
+    _sql_constraints = [
+        ('unique_property_type', 'UNIQUE(name)',
+         'The property type must be unique'),
+    ]
+
+    @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 AccountMoveLine(models.Model):
+    _inherit = 'res.users'
+
+    property_ids = fields.One2many('estate.property', 'user_id', domain=[('status', '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
+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
+estate.access_estate_property_tag,access_estate_property_tag,estate.model_estate_property_tag,base.group_user,1,1,1,1
+estate.access_estate_property_offer,access_estate_property_offer,estate.model_estate_property_offer,base.group_user,1,1,1,1

estate/views/estate_menus.xml

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+<odoo>
+    <menuitem id="estate_menu_root" name="Estate">
+        <menuitem id="estate_first_level_menu" name="Advertissements">
+            <menuitem id="estate_model_menu_action" action="estate_model_action"/>
+        </menuitem>
+        <menuitem id="estate_settings_menu" name="Settings">
+            <menuitem id="estate_type_model_menu_action" action="estate_property_type_model_action"/>
+            <menuitem id="estate_tag_model_menu_action" action="estate_property_tag_model_action"/>
+        </menuitem>
+    </menuitem>
+</odoo>