[ADD] estate: Added new real estate property management module

estate/__init__.py

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+from . import models

estate/__manifest__.py

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+{
+    'name': 'Real Estate',
+    'version': '1.0',
+    'summary': 'Manage real estate properties',
+    'description': 'Module to manage real estate properties',
+    'author': 'Akya',
+    'depends': ['base', 'mail'],
+    'data': [
+        'security/ir.model.access.csv',
+        'views/estate_property_views.xml',
+        'views/estate_property_offer_view.xml',
+        'views/estate_property_tag_view.xml',
+        'views/estate_property_type_view.xml',
+        'views/res_users_view.xml',
+        'views/estate_menus.xml',
+    ],
+    'installable': True,
+    'application': True,
+    'license': 'AGPL-3'
+}

estate/models/__init__.py

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+from . import estate_property, estate_property_type, estate_property_tag, estate_property_offer, res_users

estate/models/estate_property.py

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+from odoo import models, fields, api
+from odoo.exceptions import UserError, ValidationError
+from odoo.tools.float_utils import float_is_zero, float_compare
+
+
+class EstateProperty(models.Model):
+    _name = 'estate.property'
+    _description = 'Real Estate Property'
+    _order = 'id desc'
+    _inherit = ['mail.thread', 'mail.activity.mixin']
+
+    title = fields.Char(required=True)
+    description = fields.Text()
+    postcode = fields.Char()
+    availability_date = fields.Date(copy=False)
+    expected_price = fields.Float(required=True, default=0.0)
+    selling_price = fields.Float(string="Selling Price", readonly=True)
+    bedrooms = fields.Integer(default=2)
+    living_area = fields.Integer()
+    facades = fields.Integer()
+    garage = fields.Boolean()
+    garden = fields.Boolean()
+    garden_area = fields.Integer()
+    best_price = fields.Float(compute="_compute_best_price")
+    total_area = fields.Float(compute="_compute_total")
+    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'),
+        ('canceled', 'Canceled'),
+        ('refused', 'Refused')
+    ], string='Status', default='new', tracking=True)
+    active = fields.Boolean(string='Active', default=True)
+    property_type_id = fields.Many2one('estate.property.type', string="Property Type")
+    buyer_id = fields.Many2one('res.partner', string="Buyer")
+    seller_id = fields.Many2one('res.users', string="Salesperson", ondelete='set null')
+    tag_ids = fields.Many2many('estate.property.tag')
+    offer_ids = fields.One2many('estate.property.offer', 'property_id', string="Offers")
+
+    @api.depends('living_area', 'garden_area')
+    def _compute_total(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 = 10.0
+            self.garden_orientation = 'north'
+        else:
+            self.garden_area = 0.0
+            self.garden_orientation = False
+
+    def action_cancel(self):
+        if self.state != "sold":
+            self.state = "canceled"
+        elif self.state == "sold":
+            raise UserError("This property can't be canceled as it is sold already")
+        return True
+
+    def action_sold(self):
+        if self.state != "canceled":
+            if self.state == 'offer_accepted':
+                self.state = "sold"
+            else:
+                raise UserError("This property can't be sold as there are no offers")
+        elif self.state == "canceled":
+            raise UserError("This property can't be sold as it is canceled already")
+        return True
+
+    _sql_constraints = [
+        ('check_expected_price', 'CHECK(expected_price > 0)', 'The expected price must be strictly positive.'),
+        ('check_selling_price', 'CHECK(selling_price >= 0)', 'The selling price must be positive.')
+    ]
+
+    @api.constrains('selling_price', 'expected_price')
+    def _check_selling_price(self):
+        for record in self:
+            if not float_is_zero(record.selling_price, precision_rounding=0.01):
+                if float_compare(record.selling_price, record.expected_price * 0.9, precision_rounding=0.01) == -1:
+                    raise ValidationError("The selling price cannot be lower than 90% of the expected price.")
+
+    def action_offer_received(self):
+        self.state = 'offer_received'
+
+    @api.ondelete(at_uninstall=False)
+    def _delete_property(self):
+        for record in self:
+            if record.state not in ['new', 'canceled']:
+                raise UserError(
+                    "You cannot delete a property unless it is in the 'New' or 'Canceled' state."
+                )

estate/models/estate_property_offer.py

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+from odoo import models, fields, api
+from datetime import timedelta
+from odoo.exceptions import UserError
+
+
+class EstatePropertyOffer(models.Model):
+    _name = 'estate.property.offer'
+    _description = 'Property Offer'
+    _order = 'price desc'
+
+    price = fields.Float(string="Price")
+    status = fields.Selection([('accepted', 'Accepted'), ('refused', 'Refused')], string="Status", copy=False)
+    partner_id = fields.Many2one('res.partner', string="Partner", required=True)
+    validity = fields.Integer(string="Validity (days)", default=7)
+    date_deadline = fields.Date(string="Deadline", compute="_compute_date_deadline", inverse="_inverse_date_deadline")
+    property_id = fields.Many2one('estate.property', 'Property', required=True, ondelete="cascade")
+    property_type_id = fields.Many2one(related="property_id.property_type_id")
+
+    @api.depends('create_date', 'validity')
+    def _compute_date_deadline(self):
+        for record in self:
+            if record.create_date:
+                record.date_deadline = record.create_date + timedelta(days=record.validity)
+            else:
+                record.date_deadline = fields.Date.today() + timedelta(days=record.validity)
+
+    def _inverse_date_deadline(self):
+        for record in self:
+            if record.date_deadline and record.create_date:
+                create_date_date = record.create_date.date()
+                record.validity = (record.date_deadline - create_date_date).days
+            else:
+                record.validity = 0
+
+    def action_accept(self):
+        if not self.property_id.buyer_id:
+            self.status = 'accepted'
+            self.property_id.selling_price = self.price
+            self.property_id.buyer_id = self.partner_id
+            self.property_id.state = "offer_accepted"
+        else:
+            raise UserError("Offer has been already Accepted")
+        return True
+
+    def action_refuse(self):
+        if self.property_id.buyer_id == self.partner_id:
+            self.property_id.buyer_id = ''
+            self.property_id.selling_price = 0
+        self.status = 'refused'
+        return True
+
+    _sql_constraints = [
+        ('check_offer_price', 'CHECK(price > 0)', 'The offer price must be strictly positive.')
+    ]
+
+    @api.model
+    def create(self, vals):
+        record = super().create(vals)
+        if record.property_id.state == 'new':
+            record.property_id.state = 'offer_received'
+        if record.price < max(record.property_id.offer_ids.mapped('price')):
+            raise UserError("Price should be greater than the existing offer")
+        return record

estate/models/estate_property_tag.py

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+from odoo import models, fields
+
+
+class EstatePropertyTag(models.Model):
+    _name = 'estate.property.tag'
+    _description = 'Property Tag'
+    _order = 'name'
+
+    name = fields.Char(string="Name", required=True)
+    color = fields.Integer()
+
+    _sql_constraints = [
+        ('unique_name', 'UNIQUE(name)', 'This property tag already exists.'),
+    ]

estate/models/estate_property_type.py

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+from odoo import models, fields, api
+
+
+class EstateProperty(models.Model):
+    _name = 'estate.property.type'
+    _description = 'Estate Property Type'
+    _order = 'sequence, name'
+
+    name = fields.Char(string="Name", required=True)
+    sequence = fields.Integer(string='Sequence', default=10)
+    property_ids = fields.One2many('estate.property', 'property_type_id', string="Properties")
+    offer_ids = fields.One2many('estate.property.offer', 'property_type_id', string="Offers")
+    offer_count = fields.Integer(
+        string="Number of Offers",
+        compute='_compute_offer_count'
+    )
+
+    _sql_constraints = [
+        ('unique_name', 'UNIQUE(name)', 'This property type already exists.'),
+    ]
+
+    @api.depends('offer_ids')
+    def _compute_offer_count(self):
+        for record in self:
+            record.offer_count = len(record.offer_ids)

estate/models/res_users.py

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+from odoo import models, fields
+
+
+class ResUsers(models.Model):
+    _inherit = 'res.users'
+
+    property_ids = fields.One2many(
+        'estate.property',
+        'seller_id',
+        string='Properties',
+        domain=[('state', '=', 'available')]
+    )

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_estate_property_type,access_estate_property_type,estate.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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+<?xml version="1.0" encoding="UTF-8"?>
+<odoo>
+   <menuitem id="estate_menu_root" name="Real Estate">
+        <menuitem id="Advertisements" name="Advertisements">
+            <menuitem id="Properties" action="action_estate_property"/>
+        </menuitem>
+     <menuitem id="Settings" name="Settings">
+        <menuitem id="Properties_Types" name="Property Types" action="action_estate_property_type"/>
+        <menuitem id="Properties_Tags" name="Property Tags" action="action_estate_property_tag"/>
+        <menuitem id="Users_and_companies" name="Users and Companies" action="action_res_users"/>
+     </menuitem>
+  </menuitem>
+</odoo>

estate/views/estate_property_offer_view.xml

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+<?xml version="1.0"?>
+<odoo>
+
+
+    <record id="action_estate_property_offer" model="ir.actions.act_window">
+    <field name="name">Property Offers</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_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>        
+                <sheet>
+                    <group>
+                        <field name="price"/>
+                        <field name="partner_id"/>
+                        <field name="validity" />
+                        <field name="date_deadline" />
+
+                    </group>
+                </sheet>
+            </form>
+        </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 string="Property Offers" editable="bottom" decoration-success="status in ['accepted']" decoration-danger="status in ['refused']">
+                    <field name="partner_id"/>
+                    <field name="price"/>
+                    <field name="validity"/>
+                    <field name="status" column_invisible='true'/>
+                    <field name="date_deadline"/>
+                    <field name="property_type_id"/>
+                    <button name="action_accept" type="object" icon="fa-check"  invisible="status in ['accepted', 'refused']"/>
+                    <button name="action_refuse" type="object" icon="fa-times"  invisible="status in ['accepted', 'refused']"/>
+                </tree>
+        </field>
+    </record>
+
+
+</odoo>

estate/views/estate_property_tag_view.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<odoo>
+
+     <record id="action_estate_property_tag" model="ir.actions.act_window">
+            <field name="name">Property Tags</field>
+            <field name="res_model">estate.property.tag</field>
+            <field name="view_mode">tree,form</field>
+     </record>
+
+     <record id="view_estate_property_tag_tree" model="ir.ui.view">
+            <field name="name">estate.property.tag.tree</field>
+            <field name="model">estate.property.tag</field>
+            <field name="arch" type="xml">
+                <tree string="Property Tags" editable="bottom">
+                    <field name="name"/>
+                    <field name="color"/>
+                </tree>
+            </field>
+     </record>
+
+     <record id="estate_property_tag_view_form" model="ir.ui.view">
+        <field name="name">estate.property.tag.form</field>
+        <field name="model">estate.property.tag</field>
+        <field name="arch" type="xml">
+            <form string="Estate Property Tag">
+                <sheet>
+                        <group>
+                               <h1> <field name="name"/> </h1>
+                        </group>
+                    </sheet>
+            </form>
+        </field>
+    </record>
+
+</odoo>
+
+
+