[ADD] estate: added new real estate module

estate/__init__.py

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+from . import models

estate/__manifest__.py

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+{
+    "name": "Real Estate",
+    "version": "1.0",
+    "license": "LGPL-3",
+    "category": "Real Estate",
+    "summary": "Manage properties",
+    "depends": ["base_setup", "mail"],
+    "data": [
+        "security/ir.model.access.csv",
+        "views/real_estate_property.xml",
+        "views/estate_property_tree_views.xml",
+        "views/estate_property_offer_view.xml",
+        "views/property_type_views.xml",
+        "views/property_tag.xml",
+        "views/res_users_view.xml",
+        "views/real_estate_menu.xml",
+    ],
+    "installable": True,
+    "application": True,
+    "auto_install": False,
+}

estate/models/__init__.py

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+from . import estate_property
+from . import test_model
+from . import property_type
+from . import property_tag
+from . import property_offer
+from . import inherited_model

estate/models/estate_property.py

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+from odoo import models, fields, api
+from odoo.exceptions import UserError, ValidationError
+
+
+class MyModel(models.Model):
+    _name = "estate_property"
+    _description = "Real Estate"
+    _inherit = ["mail.thread", "mail.activity.mixin"]
+    _order = "id desc"
+
+    name = fields.Char(string="Title", required=True)
+    description = fields.Text(string="Description")
+    postcode = fields.Char(string="Postcode")
+    date_availability = fields.Date(string="Available From")
+    expected_price = fields.Float(string="Expected Price")
+    selling_price = fields.Float(string="Selling Price")
+    bedrooms = fields.Integer(string="Bedrooms")
+    living_area = fields.Integer(string="Living Area (sqm)")
+    facades = fields.Integer(string="Facades")
+    garage = fields.Boolean(string="Garage")
+    garden = fields.Boolean(string="Garden")
+    garden_area = fields.Integer(string="Garden Area (sqm)")
+    garden_orientation = fields.Selection(
+        selection=[
+            ("north", "North"),
+            ("south", "South"),
+            ("east", "East"),
+            ("offer receivedwest", "West"),
+        ],
+    )
+    active = fields.Boolean(default=True)
+    state = fields.Selection(
+        string="Status",
+        selection=[
+            ("new", "New"),
+            ("offer received", "Offer Received"),
+            ("offer accepted", "Offer Accepted"),
+            ("sold", "Sold"),
+            ("cancelled", "Cancelled"),
+        ],
+        tracking=True,
+        default="new",
+    )
+
+    salesman_id = fields.Many2one(
+        "res.users",  # The model this field relates to
+        string="Salesman",  # Label for the field
+        default=lambda self: self.env.user.partner_id,  # Set default to the current user
+    )
+    buyer_id = fields.Many2one(
+        "res.partner",  # The model this field relates to
+        string="Buyer",  # Label for the field
+        copy=False,  # Prevent the field value from being copied when duplicating the record
+    )
+    property_type_id = fields.Many2one(
+        "real.estate.property.type", string="Property Type"
+    )
+    tag_ids = fields.Many2many("real.estate.property.tag", string="tags")
+    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", "best_offer")
+    def _compute_best_offer(self):
+        for record in self:
+            if record.offer_ids:
+                record.best_offer = max(record.offer_ids.mapped("price"))
+            else:
+                record.best_offer = 0.0
+
+    @api.onchange("garden")
+    def _onchange_garden(self):
+        if self.garden:
+            self.garden_area = 10
+            self.garden_orientation = "north"
+        else:
+            self.garden_area = False
+            self.garden_orientation = False
+
+    def action_cancel(self):
+        for record in self:
+            if record.state == "sold":
+                raise UserError("Sold property cannot be cancelled.")
+            record.state = "cancelled"
+
+    def action_sold(self):
+        for record in self:
+            if record.state == "cancelled":
+                raise UserError("Cancelled property cannot be sold.")
+            record.state = "sold"
+
+    @api.depends("offer_ids.price", "selling_price")
+    def _compute_best_offer(self):
+        for record in self:
+            if record.offer_ids:
+                record.best_offer = max(record.offer_ids.mapped("price"))
+            else:
+                record.best_offer = 0.0
+
+    _sql_constraints = [
+        ("property_name", "unique(name)", "The property name must be unique!"),
+        (
+            "selling_price",
+            "check(selling_price >= 0)",
+            "A property selling price must be strictly positive.",
+        ),
+        (
+            "expected_price",
+            "CHECK(expected_price >= 0)",
+            "A property expected price must be strictly positive.",
+        ),
+    ]
+
+    @api.constrains("selling_price", "expected_price")
+    def _check_selling(self):
+        for record in self:
+            if record.selling_price > 0:
+                price_per = (record.expected_price * 90) / 100
+                if record.selling_price < price_per:
+                    raise ValidationError(
+                        "selling price cannot be lower than 90% of the expected price."
+                    )
+
+    @api.ondelete(at_uninstall=False)
+    def _check_state_before_delete(self):
+        for record in self:
+            if record.state not in ["new", "cancelled"]:
+                raise UserError(
+                    "You cannot delete a property that is not in 'New' or 'Canceled' state."
+                )

estate/models/inherited_model.py

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+from odoo import models, fields
+
+
+class InheritedModel(models.Model):
+    _inherit = "res.users"
+
+    property_ids = fields.One2many(
+        "estate_property",
+        "salesman_id",
+        string="Offers",
+        domain="['|',('state', '=', 'offer received'),('state', '=', 'offer accepted')]",
+    )

estate/models/property_offer.py

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+from odoo import api, models, fields
+from dateutil.relativedelta import relativedelta
+from odoo.exceptions import UserError
+
+
+class EstatePropertyOffer(models.Model):
+    _name = "estate.property.offer"
+    _description = "Estate Property Offer"
+    _order = "price desc"
+
+    price = fields.Float(string="Price", required=True)
+    status = fields.Selection(
+        [("accepted", "Accepted"), ("refused", "Refused")],
+        string="Status",
+        copy=False,
+    )
+
+    partner_id = fields.Many2one("res.partner", string="Partner", required=True)
+    property_id = fields.Many2one(
+        "estate_property", string="Property", ondelete="cascade"
+    )
+    validity = fields.Integer(string="Validity (days)", default=7)
+    deadline_date = fields.Date(
+        string="Deadline", compute="_compute_deadline", inverse="_inverse_deadline"
+    )
+    property_type_id = fields.Many2one(
+        related="property_id.property_type_id", store=True
+    )
+
+    @api.depends("property_id.create_date", "validity")
+    def _compute_deadline(self):
+        for record in self:
+            if record.property_id.create_date:
+                record.deadline_date = record.property_id.create_date + relativedelta(
+                    days=record.validity
+                )
+            else:
+                record.deadline_date = False
+
+    def _inverse_deadline(self):
+        for record in self:
+            if record.property_id.create_date and record.deadline_date:
+                flag = fields.Date.from_string(record.deadline_date)
+                flag1 = fields.Date.from_string(record.property_id.create_date)
+                if flag and flag1:
+                    record.validity = (flag - flag1).days
+                else:
+                    record.validity = 7
+            else:
+                record.validity = 7
+
+    def action_refused(self):
+        for record in self:
+            record.status = "refused"
+
+    def action_accepted(self):
+        for record in self:
+            record.status = "accepted"
+            record.property_id.selling_price = record.price
+            record.property_id.buyer_id = record.partner_id
+
+    @api.model
+    def create(self, vals):
+        property_id = vals.get("property_id")
+        property_users = self.env["estate_property"].browse(property_id)
+        property_users.state = "offer received"
+        if property_users.offer_ids.filtered(lambda o: o.price >= vals.get("price")):
+            raise UserError(
+                "You cannot create an offer with a lower amount than an existing offer."
+            )
+        return super().create(vals)

estate/models/property_tag.py

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+from odoo import models, fields
+
+
+class PropertyTag(models.Model):
+    _name = "real.estate.property.tag"
+    _description = "Property Type"
+    _order = "name"
+
+    name = fields.Char(required=True)
+    color = fields.Integer()
+
+    _sql_constraints = [("name", "UNIQUE(name)", "A property tag name must be unique")]

estate/models/property_type.py

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+from odoo import api, models, fields
+
+
+class PropertyType(models.Model):
+    _name = "real.estate.property.type"
+    _description = "Property Type"
+    _order = "name"
+
+    name = fields.Char(string="Property Type", required=True)
+    description = fields.Text(string="Description")
+
+    property_ids = fields.One2many(
+        "estate_property", "property_type_id", string="Offers"
+    )
+    # nickname = fields.Char(related='property_ids.partner_id.name', store=True)
+    offer_ids = fields.One2many("estate.property.offer", "property_type_id", store=True)
+    sequence = fields.Integer("Sequence")
+    offer_count = fields.Integer(compute="_compute_offer_count")
+    _sql_constraints = [("name", "UNIQUE(name)", "A property type name 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/test_model.py

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+from odoo import models, fields
+
+
+class MyModel(models.Model):
+    _name = "test_model"
+    _description = "My New Model"
+
+    name = fields.Char(string="Name", required=True)
+    description = fields.Text()
+    address = fields.Text()

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
+estate.access_real_estate_property_type,access_real_estate_property_type,estate.model_real_estate_property_type,base.group_user,1,1,1,1
+estate.access_real_estate_property_tag,access_real_estate_property_tag,estate.model_real_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_property_offer_view.xml

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+<odoo>
+	<record id="estate_property_offer_action" model="ir.actions.act_window">
+		<field name="name">
+			Offer
+		</field>
+		<field name="res_model">estate.property.offer</field>
+		<field name="view_mode">
+			tree,form
+		</field>
+		<field name="domain">
+			[('property_type_id', '=', active_id)]
+		</field>
+	</record>
+	<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">
+			<tree editable="bottom" decoration-bf="status=='accepted'" decoration-success="status=='accepted'" decoration-danger="status=='refused'">
+				<field name="price" />
+				<field name="partner_id" />
+				<field name="validity" />
+				<field name="deadline_date" />
+				<button name="action_accepted" type="object" icon="fa-check" title="done" invisible="status in ('accepted', 'refused')" />
+				<button name="action_refused" type="object" icon="fa-times" title="cancel" invisible="status in ('accepted', 'refused')" />
+				<field name="status" column_invisible="1" />
+			</tree>
+		</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 string="Properties Form">
+				<sheet>
+					<group>
+						<field name="price" />
+						<field name="partner_id" />
+						<field name="validity" />
+						<field name="deadline_date" />
+						<field name="status" />
+					</group>
+				</sheet>
+			</form>
+		</field>
+	</record>
+</odoo>