[ADD] real_estate: init real estate addon

estate/__init__.py

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+from . import models

estate/__manifest__.py

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

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

estate/models/estate_property.py

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+from odoo import fields, models, api
+from odoo.exceptions import UserError
+from datetime import timedelta
+
+
+class EstateProperty(models.Model):
+    _name = "estate.property"
+    _description = "Estate property"
+
+    _check_expected_price = models.Constraint(
+        "CHECK(expected_price > 0)",
+        "The expected price must be strictly positive.",
+    )
+
+    _check_selling_price = models.Constraint(
+        "CHECK(selling_price >= 0)",
+        "The selling price must be positive.",
+    )
+
+    name = fields.Char('Name', required=True, default='My new house')
+    description = fields.Text('Description')
+    active = fields.Boolean(default=True)
+    postcode = fields.Char('Postcode')
+    date_availability = fields.Date('Available From', default=lambda self: fields.Date.context_today(self) + timedelta(days=90), copy=False)
+    expected_price = fields.Float('Expected Price', required=True)
+    selling_price = fields.Float('Selling Price', readonly=True, copy=False)
+    bedrooms = fields.Integer('Bedrooms', default=2)
+    living_area = fields.Integer('Living Area (sqm)')
+    facades = fields.Integer('#Facades')
+    garage = fields.Boolean('Garage')
+    garden = fields.Boolean('Garden')
+    garden_area = fields.Integer('Garden area')
+
+    garden_orientation = fields.Selection([
+        ("north", "North"),
+        ("south", "South"),
+        ("east", "East"),
+        ("west", "West"),
+    ])
+
+    state = fields.Selection(
+        [
+            ('new', 'New'),
+            ('offer_received', 'Offer Received'),
+            ('offer_accepted', 'Offer Accepted'),
+            ('sold', 'Sold'),
+            ('cancelled', 'Cancelled'),
+        ],
+        required=True,
+        copy=False,
+        default='new',
+    )
+    property_type_id = fields.Many2one(
+        "estate.property.type",
+        string="Property Type"
+    )
+
+    buyer_id = fields.Many2one(
+        "res.partner",
+        string="Buyer",
+        copy=False
+    )
+
+    salesperson_id = fields.Many2one(
+        "res.users",
+        string="Salesman",
+        default=lambda self: self.env.user
+    )
+
+    tag_ids = fields.Many2many(
+        "estate.property.tag",
+        string="Tags"
+    )
+
+    offer_ids = fields.One2many(
+        "estate.property.offer",
+        "property_id",
+        string="Offers",
+    )
+
+    total_area = fields.Float(
+        compute="_compute_total_area",
+        string="Total Area",
+    )
+
+    best_price = fields.Float(
+        compute="_compute_best_price",
+        string="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_price(self):
+        for record in self:
+            if record.offer_ids:
+                record.best_price = max(record.offer_ids.mapped("price"))
+            else:
+                record.best_price = 0.0
+
+    @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 = False
+
+    @api.depends("create_date", "validity")
+    def _compute_date_deadline(self):
+        for record in self:
+            if record.create_date:
+                record.date_deadline = (
+                    record.create_date.date() + timedelta(days=record.validity)
+            )
+            else:
+                record.date_deadline = fields.Date.context_today(self)
+
+    def _inverse_date_deadline(self):
+        for record in self:
+            if record.create_date and record.date_deadline:
+                record.validity = (
+                    record.date_deadline - record.create_date.date()
+                ).days
+
+    def action_cancel(self):
+        for record in self:
+            if record.state == "sold":
+                raise UserError("A sold property cannot be cancelled.")
+            record.state = "cancelled"
+        return True
+
+    def action_sold(self):
+        for record in self:
+            if record.state == "cancelled":
+                raise UserError("A cancelled property cannot be sold.")
+            record.state = "sold"
+        return True

estate/models/estate_property_offer.py

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+from odoo import models, fields, api
+from datetime import timedelta
+
+
+class EstatePropertyOffer(models.Model):
+    _name = "estate.property.offer"
+    _description = "Estate Property Offer"
+
+    _check_offer_price = models.Constraint(
+        "CHECK(price > 0)",
+        "The offer price must be strictly positive.",
+    )
+
+    price = fields.Float()
+
+    status = fields.Selection(
+        [
+            ('accepted', 'Accepted'),
+            ('refused', 'Refused'),
+        ],
+        copy=False,
+    )
+
+    partner_id = fields.Many2one(
+        "res.partner",
+        required=True,
+    )
+
+    property_id = fields.Many2one(
+        "estate.property",
+        required=True,
+    )
+
+    validity = fields.Integer(
+        default=7,
+    )
+
+    date_deadline = fields.Date(
+        compute="_compute_date_deadline",
+        inverse="_inverse_date_deadline",
+    )
+
+    @api.depends("create_date", "validity")
+    def _compute_date_deadline(self):
+        for record in self:
+            if record.create_date:
+                record.date_deadline = (
+                    record.create_date.date()
+                    + timedelta(days=record.validity)
+                )
+            else:
+                record.date_deadline = False
+
+    @api.depends("create_date", "validity")
+    def _compute_date_deadline(self):
+        for record in self:
+            if record.create_date:
+                record.date_deadline = (
+                    record.create_date.date() + timedelta(days=record.validity)
+            )
+            else:
+                record.date_deadline = fields.Date.context_today(self)
+
+    def _inverse_date_deadline(self):
+        for record in self:
+            if record.create_date and record.date_deadline:
+                record.validity = (
+                    record.date_deadline - record.create_date.date()
+                ).days
+
+    def action_accept(self):
+        for record in self:
+            other_offers = record.property_id.offer_ids - record
+            other_offers.write({"status": "refused"})
+
+            record.status = "accepted"
+
+            record.property_id.write({
+                "buyer_id": record.partner_id.id,
+                "selling_price": record.price,
+                "state": "offer_accepted",
+            })
+        return True
+
+    def action_refuse(self):
+        for record in self:
+            record.status = "refused"
+        return True

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"
+
+    _unique_tag_name = models.Constraint(
+        "UNIQUE(name)",
+        "The property tag name must be unique.",
+    )
+
+    name = fields.Char(required=True)

estate/models/estate_property_type.py

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+from odoo import fields, models
+
+
+class EstatePropertyType(models.Model):
+    _name = "estate.property.type"
+    _description = "Estate property type"
+
+    _unique_type_name = models.Constraint(
+        "UNIQUE(name)",
+        "The property type name must be unique.",
+    )
+
+    name = fields.Char('Name', required=True)

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,estate.property.offer,model_estate_property_offer,base.group_user,1,1,1,1

estate/views/estate_menus_views.xml

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+<?xml version="1.0"?>
+<odoo>
+  <menuitem id="estate_menu_root" name="Real Estate">
+    <menuitem id="estate_property_menu" name="Property">
+      <menuitem
+        id="estate_property_menu_action"
+        action="estate_property_model_action"
+      />
+    </menuitem> 
+
+    <menuitem id="estate_property_type_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="view_estate_property_offer_tree" model="ir.ui.view">
+    <field name="name">estate.property.offer.tree</field>
+    <field name="model">estate.property.offer</field>
+    <field name="arch" type="xml">
+      <list>
+        <field name="price" />
+        <field name="partner_id" />
+        <field name="status" />
+        <field name="validity" />
+        <button
+          title="accept-btn"
+          name="action_accept"
+          type="object"
+          icon="fa-check"
+        />
+        <button
+          title="refuse-btn"
+          name="action_refuse"
+          type="object"
+          icon="fa-times"
+        />
+        <field name="date_deadline" />
+      </list>
+    </field>
+  </record>
+
+  <record id="view_estate_property_offer_form" model="ir.ui.view">
+    <field name="name">estate.property.offer.form</field>
+    <field name="model">estate.property.offer</field>
+    <field name="arch" type="xml">
+      <form>
+        <header>
+          <button
+            name="action_accept"
+            type="object"
+            string="Accept"
+            icon="fa-check"
+            invisible="status == 'accepted'"
+            title="accept-form-btn"
+          />
+
+          <button
+            name="action_refuse"
+            type="object"
+            string="Refuse"
+            icon="fa-times"
+            invisible="status == 'refused'"
+            title="reject-form-btn"
+          />
+        </header>
+        <sheet>
+          <group>
+            <field name="price" />
+            <field name="partner_id" />
+            <field name="validity" />
+            <field name="date_deadline" />
+            <field name="status" />
+          </group>
+        </sheet>
+      </form>
+    </field>
+  </record>
+</odoo>