[ADD] Estate Module (Python Framework Training)

estate/__init__.py

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+from . import models

estate/__manifest__.py

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+{
+    "name": "Real Estate",
+    "description": "Real Estate Management System",
+    "category": "Tutorials",
+    "version": "1.1",
+    "application": True,
+    "data": [
+        "security/ir.model.access.csv",
+        "views/views.xml",
+        "views/menus.xml"
+    ],
+    "author": "Odoo S.A.",
+    "license": "LGPL-3",
+}

estate/models/__init__.py

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+from . import building
+from . import building_type
+from . import tag
+from . import offer
+from . import salesperson

estate/models/building.py

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+from datetime import timedelta
+
+from odoo import models, fields, api
+from odoo.exceptions import UserError
+
+
+class Building(models.Model):
+    _name = 'estate.building'
+    _description = 'Buildings'
+    _order = "id desc"
+
+    name = fields.Char()
+    description = fields.Text()
+    value = fields.Integer(copy=False)
+    availability_date = fields.Date(
+        default=lambda self: fields.Date.today() + timedelta(days=90), copy=False
+    )
+    number_of_rooms = fields.Integer(default=2)
+    garden_area = fields.Integer()
+    building_area = fields.Integer()
+    garden_orientation = fields.Selection(
+        [("north", "North"), ("south", "South"), ("east", "East"), ("west", "West")],
+        "garden Orientation",
+    )
+    active = fields.Boolean(default=True)
+    state = fields.Selection(
+        [
+            ("new", "New"),
+            ("offer_received", "Offer Received"),
+            ("offer_accepted", "Offer Accepted"),
+            ("sold", "Sold"),
+            ("canceled", "Canceled"),
+        ],
+        default="new",
+    )
+    post_code = fields.Integer(default=1000)
+    building_type_id = fields.Many2one("estate.building_type", string="Building Type")
+    buyer_id = fields.Many2one("res.partner", string="Buyer")
+    salesperson_id = fields.Many2one(
+        "res.users", string="Salesperson", default=lambda self: self.env.user
+    )
+    tag_ids = fields.Many2many("estate.building_tags", string="Tags")
+    offer_ids = fields.One2many("estate.offer", "building_id", string="Offers")
+
+    total_area = fields.Integer(string="Total Area", compute="_compute_total_area")
+
+    best_price = fields.Integer(
+        string="Best Offer Price",
+        compute="_compute_best_price",
+    )
+    has_garden = fields.Boolean(string="Has Garden", default=False)
+
+    _price_constraint = models.Constraint(
+        "CHECK (value > 0)", "Price must be POSITIVE."
+    )
+    _name_constraint = models.Constraint(
+        "UNIQUE(name)", "Building name must be UNIQUE."
+    )
+
+    @api.depends("building_area", "garden_area")
+    def _compute_total_area(self):
+        for record in self:
+            record.total_area = record.building_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
+
+    @api.onchange("has_garden")
+    def _onchange_garden_area(self):
+        if self.has_garden:
+            self.garden_area = 10
+            self.garden_orientation = "north"
+        else:
+            self.garden_area = 0
+            self.garden_orientation = False
+
+    def action_set_sold(self):
+        for record in self:
+            if record.state == "canceled":
+                raise UserError(self.env._("Canceled buildings cannot be sold."))
+            record.state = "sold"
+
+    def action_set_canceled(self):
+        for record in self:
+            if record.state == "sold":
+                raise UserError(self.env._("Sold buildings cannot be canceled."))
+            record.state = "canceled"
+
+    @api.ondelete(at_uninstall=False)
+    def _check_if_sold(self):
+        for record in self:
+            if record.state not in ("new", "canceled"):
+                raise UserError(self.env._("This building cannot be deleted."))
+        return self

estate/models/building_type.py

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+from odoo import models, fields
+
+
+class BuildingType(models.Model):
+    _name = 'estate.building_type'
+    _description = 'Building Type'
+    _order = "sequence, name"
+
+    name = fields.Char(required=True)
+    building_ids = fields.One2many(
+        "estate.building", "building_type_id", string="Buildings"
+    )
+    offer_ids = fields.One2many("estate.offer", "property_type_id", string="Offers")
+    offers_count = fields.Integer(
+        string="Offers Count",
+        compute="_compute_offers_count",
+    )
+
+    _name_uniqueness_constraint = models.Constraint(
+        "UNIQUE (name)", "Building type name must be UNIQUE."
+    )
+
+    sequence = fields.Integer(
+        default=1,
+        help="Gives the sequence order when displaying a list of building types.",
+    )
+
+    def _compute_offers_count(self):
+        for record in self:
+            record.offers_count = self.env["estate.offer"].search_count(
+                [("property_type_id", "=", record.id)]
+            )

estate/models/offer.py

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+from datetime import timedelta
+
+from odoo import models, fields, api
+from odoo.exceptions import UserError
+from odoo.tools.float_utils import float_compare
+
+
+class Offer(models.Model):
+    _name = 'estate.offer'
+    _description = 'Offers'
+    _order = "price desc"
+
+    price = fields.Integer(required=True)
+    status = fields.Selection(
+        [("accepted", "Accepted"), ("refused", "Refused")],
+        string="Status",
+        required=False,
+    )
+    building_id = fields.Many2one("estate.building", string="Building")
+    partner_id = fields.Many2one("res.partner", string="Partner")
+    validity = fields.Integer(string="Validity (days)", default=7)
+    date_deadline = fields.Date(
+        string="Deadline",
+        compute="_compute_date_deadline",
+        inverse="_inverse_date_deadline",
+    )
+    property_type_id = fields.Many2one(
+        related="building_id.building_type_id", string="Property Type", store=True
+    )
+
+    _price_positive_constraint = models.Constraint(
+        "CHECK (price > 0)", "Offer price must be positive."
+    )
+
+    @api.depends("validity")
+    def _compute_date_deadline(self):
+        for record in self:
+            record.date_deadline = fields.Date.today() + timedelta(days=record.validity)
+
+    def _inverse_date_deadline(self):
+        for record in self:
+            record.validity = (record.date_deadline - fields.Date.today()).days
+
+    def action_accept_offer(self):
+        for record in self:
+            if record.status != "accepted" and record.building_id.state not in ["sold", "canceled"]:
+                record.status = "accepted"
+                record.building_id.state = "offer_accepted"
+                record.building_id.buyer_id = record.partner_id
+                record.building_id.value = record.price
+                other_offers = self.search(
+                    [
+                        ("building_id", "=", record.building_id.id),
+                        ("id", "!=", record.id),
+                    ]
+                )
+                other_offers.write({"status": "refused"})
+            elif record.building_id.state in ["sold", "canceled"]:
+                raise UserError(self.env._("Cannot accept offers for sold or canceled buildings."))
+            else:
+                raise UserError(self.env._("Offer is already accepted."))
+
+    def action_refuse_offer(self):
+        for record in self:
+            if record.status != "refused":
+                record.status = "refused"
+                record.building_id.state = "offer_received"
+                record.building_id.buyer_id = False
+            else:
+                raise UserError(self.env._("Offer is already refused."))
+
+    @api.constrains("building_id", "price")
+    def _check_price(self):
+        for record in self:
+            if float_compare(0.9 * record.building_id.value, record.price, precision_digits=2) > 0:
+                raise UserError(self.env._("Offer price must be at least 90% of the building's value."))
+
+    @api.model
+    def create(self, vals):
+        for val in vals:
+            self.env["estate.building"].browse(
+                val["building_id"]
+            ).state = "offer_received"
+        return super().create(vals)

estate/models/salesperson.py

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+from odoo import models, fields
+
+
+class ResUsers(models.Model):
+    _name = 'res.users'
+    _inherit = ['res.users']
+
+    building = fields.One2many("estate.building", "salesperson_id", string="Listings")

estate/models/tag.py

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+from odoo import models, fields
+
+
+class BuildingTag(models.Model):
+    _name = 'estate.building_tags'
+    _description = 'Building Tags'
+    _order = "name"
+
+    name = fields.Char(required=True)
+    color = fields.Integer()
+
+    _name_uniqueness_constraint = models.Constraint(
+        "UNIQUE (name)", "Building tag name must be UNIQUE."
+    )

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_first_model,access_first_model,model_estate_building,base.group_user,1,1,1,1
+access_building_type_model,access_building_type_model,model_estate_building_type,base.group_user,1,1,1,1
+access_building_tags_model,access_building_tags_model,model_estate_building_tags,base.group_user,1,1,1,1
+access_offers_model,access_offers_model,model_estate_offer,base.group_user,1,1,1,1

estate/views/menus.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<odoo>
+    <menuitem id="test_menu_root" name="Estate FelBeit">
+        <menuitem id="test_first_level_menu" name="First Level">
+            <menuitem id="test_model_menu_action" action="some_model_action_1"/>
+            <menuitem id="test_building_type_menu_action" action="some_model_action_2"/>
+        </menuitem>
+    </menuitem>
+</odoo>