[ADD] estate: create new module

estate/__init__.py

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+from . import models

estate/__manifest__.py

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+{
+    'author': 'Odoo S.A.',
+    'name': 'Estate',
+    'depends': ['base'],
+    'license': 'LGPL-3',
+    'data': [
+        'security/ir.model.access.csv',
+        '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'
+        ],
+    'application': True,
+    'installable': True
+}

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 models, fields, api
+from odoo.exceptions import UserError, ValidationError
+from odoo.tools.float_utils import float_compare
+
+
+class EstateProperty(models.Model):
+    _name = 'estate.property'
+    _description = "Real Estate Property"
+    _order = "id desc"
+
+    name = fields.Char(required=True)
+    description = fields.Text()
+    postcode = fields.Char()
+    date_availability = fields.Date(copy=False, default=fields.Date.today() + relativedelta(months=3))
+    expected_price = fields.Float(required=True)
+    selling_price = fields.Float(readonly=True, copy=False)
+    bedrooms = fields.Integer(default=2)
+    living_area = fields.Float(string="Living Area (sqm)")
+    facades = fields.Integer()
+    garage = fields.Boolean()
+    garden = fields.Boolean()
+    garden_area = fields.Float(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(
+        selection=[
+            ('new', 'New'),
+            ('offer_received', 'Offer Received'),
+            ('offer_accepted', 'Offer Accepted'),
+            ('sold', 'Sold'),
+            ('cancelled', 'Cancelled')
+        ],
+        default="new"
+    )
+    type_id = fields.Many2one("estate.property.type")
+    buyer = fields.Many2one("res.partner", copy=False)
+    salesperson = fields.Many2one("res.users", default=lambda self: self.env.user)
+    tag_ids = fields.Many2many("estate.property.tag")
+    offer_ids = fields.One2many("estate.property.offer", "property_id", string="Offers")
+    total_area = fields.Float(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.price')
+    def _compute_best_offer(self):
+        for record in self:
+            if not record.mapped('offer_ids.price'):
+                record.best_offer = 0
+            else:
+                record.best_offer = max(record.mapped('offer_ids.price'))
+
+    @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 = False
+
+    def cancel_property(self):
+        for record in self:
+            if record.state == 'sold':
+                raise UserError("sold property cannot be cancelled.")
+            else:
+                record.state = 'cancelled'
+
+    def sold_property(self):
+        for record in self:
+            if record.state == 'cancelled':
+                raise UserError("cancelled property cannot be sold.")
+            else:
+                record.state = 'sold'
+
+    _check_expected_price = models.Constraint(
+        'CHECK(expected_price >= 0)',
+        'expected price must be positive'
+    )
+
+    _check_selling_price = models.Constraint(
+        'CHECK(selling_price >= 0)',
+        'selling price must be positive'
+    )
+
+    @api.constrains('selling_price', 'expected_price', 'state')
+    def _check_selling_price(self):
+        for record in self:
+            if record.state in ['sold', 'offer_accepted']:
+                if float_compare(record.selling_price, 0.9 * record.expected_price, precision_digits=2) < 0:
+                    raise ValidationError("the selling price is lower")
+
+    @api.ondelete(at_uninstall=True)
+    def _unlink_check_state_of_property(self):
+        for record in self:
+            if record.state in ('offer_received', 'offer_accepted', 'sold'):
+                raise UserError("You cannot delete a new or cancelled property !")

estate/models/estate_property_offer.py

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+from dateutil.relativedelta import relativedelta
+
+from odoo import models, fields, api
+from odoo.exceptions import UserError
+
+
+class EstatePropertyOffer(models.Model):
+    _name = 'estate.property.offer'
+    _description = "Estate Property Offer"
+    _order = "price desc"
+
+    price = fields.Float()
+    status = fields.Selection(
+        selection=[
+            ('accepted', 'Accepted'),
+            ('refused', 'Refused')
+        ]
+    )
+    partner_id = fields.Many2one("res.partner", required=True)
+    property_id = fields.Many2one("estate.property", required=True)
+    property_type_id = fields.Many2one(related="property_id.type_id", store=True)
+    validity = fields.Integer(default=7)
+    date_deadline = fields.Date(compute="_compute_deadline", inverse="_inverse_deadline")
+
+    @api.depends("validity")
+    def _compute_deadline(self):
+        for record in self:
+            default_creation_date = record.create_date or fields.Date.today()
+            record.date_deadline = relativedelta(days=record.validity) + default_creation_date
+
+    def _inverse_deadline(self):
+        for record in self:
+            default_creation_date = record.create_date or fields.Date.today()
+            record.validity = (record.date_deadline - fields.Date.to_date(default_creation_date)).days
+
+    def action_accept(self):
+        for record in self:
+            if record.property_id.buyer:
+                raise UserError("Property already accepted")
+            else:
+                record.status = 'accepted'
+                record.property_id.selling_price = record.price
+                record.property_id.state = 'offer_accepted'
+                record.property_id.buyer = record.partner_id
+
+    def action_refuse(self):
+        for record in self:
+            if record.status == 'accepted':
+                raise UserError("Property already accepted")
+            else:
+                record.status = 'refused'
+
+    _check_offer_price = models.Constraint(
+    'CHECK(price>=0)',
+    'offer price must be positive',
+    )
+
+    @api.model
+    def create(self, vals):
+        for record in vals:
+            property = self.env['estate.property'].browse(record['property_id'])
+            if property.state == 'new':
+                property.state = 'offer_received'
+            if record['price'] < property.best_offer:
+                raise UserError("Offer must be higher or equal than %d" % property.best_offer)
+        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"
+    _order = "name"
+
+    name = fields.Char()
+    property_ids = fields.Many2many('estate.property')
+    color = fields.Integer()
+
+    _unique_name = models.Constraint(
+    'UNIQUE(name)',
+    'name already exists!',
+    )

estate/models/estate_property_type.py

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+from odoo import models, fields, api
+
+
+class EstatePropertyType(models.Model):
+    _name = 'estate.property.type'
+    _description = "Real Estate Property Type"
+    _order = "sequence, name"
+
+    name = fields.Char(required=True)
+    property_ids = fields.One2many('estate.property', 'type_id')
+    sequence = fields.Integer(string="Sequence", default=1)
+    offer_count = fields.Integer(compute="_compute_total_offers")
+    offer_ids = fields.One2many("estate.property.offer", "property_type_id")
+
+    @api.depends("offer_ids")
+    def _compute_total_offers(self):
+        for record in self:
+            record.offer_count = len(record.property_ids.mapped("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",
+        "salesperson",
+        string="Estate Properties",
+        domain=[("state", "!=", "sold")],
+    )

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="real_estate_menu" name="Real Estate">
+    </menuitem>
+
+    <menuitem id="advertisements_menu" name="Advertisements" parent="real_estate_menu" sequence="1">
+        <menuitem id="properties_menu_action1" action="estate_property_action"/>
+    </menuitem>
+
+    <menuitem id="setting_menu" name="Setting" parent="real_estate_menu" sequence="2">
+        <menuitem id="properties_menu_action2" action="estate_property_type_action"/>
+        <menuitem id="properties_menu_action3" action="estate_property_tag_action"/>
+    </menuitem>
+</odoo>

estate/views/estate_property_offer_views.xml

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+<?xml version="1.0"?>
+<odoo>
+    <record id="estate_property_offer_list" model="ir.ui.view">
+        <field name="model">estate.property.offer</field>
+        <field name="arch" type="xml">
+            <list decoration-danger="status == 'refused'" decoration-success="status == 'accepted'">
+                <field name="price" />
+                <field name="partner_id" />
+                <field name="validity"/>
+                <field name="date_deadline"/>
+                <button name="action_accept" string="Accept" type="object" icon="fa-check" invisible="status in ('accepted', 'refused')"/>
+                <button name="action_refuse" string="Cancelled" type="object" icon="fa-times" invisible="status in ('accepted', 'refused')"/>
+            </list>
+        </field>
+    </record>
+
+    <record id="estate_property_offer_form" model="ir.ui.view">
+        <field name="model">estate.property.offer</field>
+        <field name="arch" type="xml">
+            <form>
+                <sheet>
+                    <group>
+                        <field name="price"/>
+                        <field name="partner_id"/>
+                        <field name="validity"/>
+                        <field name="date_deadline"/>
+                        <field name="status"/>
+                    </group>
+                </sheet>
+            </form>
+        </field>
+    </record>
+
+    <record id="estate_property_offer_action" model="ir.actions.act_window">
+        <field name="name">Property type Offer</field>
+        <field name="res_model">estate.property.offer</field>
+        <field name="view_mode">list</field>
+        <field name="domain">[("property_id.type_id", "=", active_id)]</field>
+    </record>
+</odoo>

estate/views/estate_property_tag_views.xml

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+<?xml version="1.0"?>
+<odoo>
+    <record id="estate_property_tag_search" model="ir.ui.view">
+        <field name="model">estate.property.tag</field>
+        <field name="arch" type="xml">
+            <search string="Search Properties">
+                <field name="name"/>  
+            </search>
+        </field>
+    </record>
+
+    <record id="estate_property_tag_list" model="ir.ui.view">
+        <field name="model">estate.property.tag</field>
+        <field name="arch" type="xml">
+            <list string="List" editable="top">
+                <field name="name"/>  
+            </list>
+        </field>
+    </record>
+
+    <record id="estate_property_tag_form" model="ir.ui.view">
+        <field name="model">estate.property.tag</field>
+        <field name="arch" type="xml">
+            <form>
+                <sheet>
+                   <group>
+                        <group>
+                            <field name="name"/>
+                        </group>
+                    </group>
+                    <notebook>
+                    </notebook>
+                </sheet>
+            </form>
+        </field>
+    </record>
+
+    <record id="estate_property_tag_action" model="ir.actions.act_window">
+        <field name="name">Property tag</field>
+        <field name="res_model">estate.property.tag</field>
+        <field name="view_mode">list,form</field>
+        <field name="context">{"search_default_available":1}</field>
+    </record>
+</odoo>