[IMP] estate: add offer count stat button and default fillter for available property

estate/__init__.py

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+from . import models

estate/__manifest__.py

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+{
+    'name': 'Real Estate',
+    'version': '1.0',
+    'depends': ['crm'],
+    'author': 'jaldip vekariya (javek)',
+    'description': """
+     An Real Estate App to buy, sell, and rent properties.
+     """,
+    'application': True,
+    'license': 'LGPL-3',
+    'data': [
+        'security/ir.model.access.csv',
+        'views/estate_property_offer_views.xml',
+        'views/estate_property_tag_views.xml',
+        'views/estate_property_views.xml',
+        'views/estate_property_type_views.xml',
+        'views/estate_menus.xml'
+    ]
+}

estate/models/__init__.py

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+from . import real_estate_property_offer
+from . import real_estate_property_tag
+from . import real_estate_property_type
+from . import real_estate

estate/models/real_estate.py

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+from dateutil.relativedelta import relativedelta
+
+from odoo import api, fields, models
+from odoo.exceptions import ValidationError, UserError
+from odoo.tools import float_compare
+
+
+class RealEstate(models.Model):
+    _name = "real_estate"
+    _description = "Real Estate"
+    _order = "id desc"
+
+    name = fields.Char(required=True)
+    description = fields.Text()
+    postcode = fields.Char()
+    date_availability = fields.Date(
+        copy=False,
+        default=lambda self: fields.Date.context_today(self) + relativedelta(months=3),
+    )
+    expected_price = fields.Float(required=True)
+    selling_price = fields.Float()
+    bedrooms = fields.Integer(default=2)
+    living_area = fields.Integer()
+    facades = fields.Integer()
+    garage = fields.Boolean()
+    garden = fields.Boolean()
+    garden_area = fields.Integer()
+    garden_orientation = fields.Selection([
+        ("north", "North"),
+        ("south", "South"),
+        ("east", "East"),
+        ("west", "West"),
+    ])
+    state = fields.Selection(
+        selection=[
+            ("new", "New"),
+            ("offer_received", "Offer Received"),
+            ("offer_accepted", "Offer Accepted"),
+            ("sold", "Sold"),
+            ("cancelled", "Cancelled"),
+        ],
+        string="Status",
+        default="new",
+    )
+    active = fields.Boolean(default=True)
+    property_type_id = fields.Many2one("estate.property.type", string="Property Type", required=True)
+    buyer_id = fields.Many2one("res.partner", string="Buyer")
+    sales_id = fields.Many2one("res.users", string="Salesperson")
+    tag_ids = fields.Many2many("estate.property.tag", string="Tags")
+    offer_ids = fields.One2many("estate.property.offer", "property_id")
+    total_area = fields.Integer(compute="_compute_total_area")
+    best_price = fields.Integer(compute="_compute_best_price")
+
+    _expected_price_positive = models.Constraint(
+        'CHECK(expected_price > 0.0)',
+        'The expected price must be strictly positive.'
+    )
+    _selling_price_positive = models.Constraint(
+        'CHECK(selling_price >= 0.0 or selling_price IS NULL)',
+        'The selling price must be positive.'
+    )
+
+    @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:
+            record.best_price = max(record.offer_ids.mapped("price") or [0])
+
+    @api.onchange("garden")
+    def _garden_changes(self):
+        if self.garden:
+            self.garden_area = 10
+            self.garden_orientation = "north"
+        else:
+            self.garden_area = 0
+            self.garden_orientation = None
+
+    def action_sold(self):
+        for record in self:
+            if record.state != "cancelled":
+                record.state = "sold"
+            else:
+                raise UserError("Cancelled Property can not be sold")
+            return True
+
+    def action_cancel(self):
+        for record in self:
+            if record.state != "sold":
+                record.state = "cancelled"
+            else:
+                raise UserError("Sold Property can not be cancelled")
+            return True
+
+    @api.constrains("expected_price", "selling_price")
+    def _check_selling_price(self):
+        for record in self:
+            if record.selling_price == 0:
+                return False
+            if float_compare(record.selling_price, record.expected_price * 0.9, precision_digits=2) < 0:
+                raise ValidationError("The selling price cannot be lower than 90 of the expected price.")

estate/models/real_estate_property_offer.py

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+from dateutil.relativedelta import relativedelta
+
+from odoo import api, fields, models
+from odoo.exceptions import UserError
+
+
+class PropertyOffer(models.Model):
+    _name = "estate.property.offer"
+    _description = "Property Offers"
+    _order = "price desc"
+
+    price = fields.Float()
+    status = fields.Selection(
+        selection=[
+            ("accepted", "Accepted"),
+            ("refused", "Refused")
+        ]
+    )
+    partner_id = fields.Many2one("res.partner", string="Partner", required=True)
+    property_id = fields.Many2one("real_estate", string="Property", required=True)
+    validity = fields.Integer(string="Validity(days)", default=7)
+    deadline = fields.Date(
+        compute="_compute_deadline",
+        inverse="_inverse_validity"
+    )
+    property_type_id = fields.Many2one(related="property_id.property_type_id", store=True)
+
+    _price_positive = models.Constraint(
+        'CHECK(price > 0)',
+        'The offer price must be positive.'
+    )
+
+    @api.depends("validity", "create_date")
+    def _compute_deadline(self):
+        for record in self:
+            date = record.create_date.date() if record.create_date else fields.Date.today()
+            record.deadline = date + relativedelta(days=record.validity)
+
+    def _inverse_validity(self):
+        for record in self:
+            record.validity = ((record.deadline) - record.create_date.date()).days
+
+    def accept_offer(self):
+        for record in self:
+            if record.property_id.buyer_id:
+                raise UserError("Only One Offer can be accepted")
+            else:
+                for ids in record.property_id.offer_ids:
+                    if (record.id != ids.id):
+                        ids.status = "refused"
+                record.property_id.buyer_id = record.partner_id
+                record.property_id.selling_price = record.price
+                record.status = "accepted"
+                record.property_id.state = "offer_accepted"
+        return True
+
+    def reject_offer(self):
+        for record in self:
+            if record.property_id.buyer_id and record.status == "accepted":
+                raise UserError("Accepted Offer can not be rejected")
+            else:
+                record.status = "refused"
+        return True

estate/models/real_estate_property_tag.py

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+from random import randint
+
+from odoo import fields, models
+
+
+class PropertyTag(models.Model):
+    _name = "estate.property.tag"
+    _description = "Property Tags"
+    _order = "name"
+
+    name = fields.Char(string="Name")
+    color = fields.Integer(
+        string='Color Index', default=lambda self: self._default_color()
+    )
+
+    _name_unique = models.Constraint(
+        'UNIQUE(name)',
+        'The name must be unique'
+    )
+
+    def _default_color(self):
+        return randint(1, 11)

estate/models/real_estate_property_type.py

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+from odoo import api, fields, models
+
+
+class PropertyType(models.Model):
+    _name = "estate.property.type"
+    _description = "Property Types"
+    _order = "sequence, name"
+
+    name = fields.Char(string="Name")
+    property_ids = fields.One2many("real_estate", "property_type_id", required=True)
+    sequence = fields.Integer("Sequence")
+    offer_id = fields.One2many("estate.property.offer", "property_type_id")
+    offer_count = fields.Integer(compute="_compute_offer_count")
+
+    _name_unique = models.Constraint(
+        'UNIQUE(name)',
+        'The name must be unique'
+    )
+
+    @api.depends("offer_id")
+    def _compute_offer_count(self):
+        for record in self:
+            record.offer_count = len(record.offer_id)

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
+estate.access_real_estate,access_real_estate,model_real_estate,base.group_user,1,1,1,1
+estate.access_estate_property_type,access_estate_property_type,model_estate_property_type,base.group_user,1,1,1,1
+estate.access_estate_property_tag,access_estate_property_tag,model_estate_property_tag,base.group_user,1,1,1,1
+estate.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" encoding="UTF-8"?>
+<odoo>
+    <menuitem id="estate" name="Estate"/>
+    <menuitem id="estate_advertisement" name="Advertisement" parent="estate"/>
+    <menuitem id="estate_advertisement_properties" name="Properties" parent="estate_advertisement" action="real_estate"/>
+    <menuitem id="estate_settings" name="Settings" parent="estate"/>
+    <menuitem id="estate_settings_property_type" name="Property Type" parent="estate_settings" action="estate_property_type"/>
+    <menuitem id="estate_settings_property_tag" name="Property Tags" parent="estate_settings" action="estate_property_tag"/>
+</odoo>

estate/views/estate_property_offer_views.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<odoo>
+
+    <record id="estate_property_offer" model="ir.actions.act_window">
+        <field name="name">PropertyOffers</field>
+        <field name="res_model">estate.property.offer</field>
+        <field name="view_mode">list,form</field>
+        <field name="domain">[('property_type_id', '=', active_id)]</field>
+    </record>
+
+
+    <record id="estate_property_offer_list" model="ir.ui.view">
+        <field name="name">estate.property.offer.list</field>
+        <field name="model">estate.property.offer</field>
+        <field name="arch" type="xml">
+            <list string="Offers" editable="bottom" decoration-danger="status == 'refused'" decoration-success="status == 'accepted'">
+                <field name="price" />
+                <field name="partner_id" string="Partner" />
+                <field name="validity" string="Validity(days)"/>
+                <field name="deadline"/>
+                <button name="accept_offer" string="Accept" type="object" icon="fa-check" invisible="status == 'accepted' or status == 'refused'"/>
+                <button name="reject_offer" string="Reject" type="object" icon="fa-close" invisible="status == 'accepted' or status == 'refused'"/>
+                <field name="status"/>
+            </list>
+        </field>
+    </record>
+
+    <record id="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="Offer">
+                <group>
+                    <field name="price" />
+                    <field name="partner_id" string="Partner" />
+                    <field name="validity"/>
+                    <field name="deadline" readonly="0"/>
+                    <field name="status"/>
+                </group>
+            </form>
+        </field>
+    </record>
+</odoo>

estate/views/estate_property_tag_views.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<odoo>
+
+    <record id="estate_property_tag" model="ir.actions.act_window">
+        <field name="name">Tag Name</field>
+        <field name="res_model">estate.property.tag</field>
+        <field name="view_mode">list,form</field>
+    </record>
+
+
+    <record id="estate_property_tag_list" model="ir.ui.view">
+        <field name="name">estate.property.tag.list</field>
+        <field name="model">estate.property.tag</field>
+        <field name="arch" type="xml">
+            <list string="Types">
+                <field name="name" string="Type"/>
+                <field name="color" widget="color_picker" options="{'color_field': 'color'}"/>
+            </list>
+        </field>
+    </record>
+
+    <record id="estate_property_tag_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="Tags">
+                <sheet>
+                    <group>
+                        <field name="name" />
+                        <field name="color" widget="color_picker"/>
+                    </group>
+                </sheet>
+            </form>
+        </field>
+    </record>
+
+</odoo>

estate/views/estate_property_type_views.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<odoo>
+
+    <record id="estate_property_type" model="ir.actions.act_window">
+        <field name="name">Property Type</field>
+        <field name="res_model">estate.property.type</field>
+        <field name="view_mode">list,form</field>
+    </record>
+
+
+    <record id="estate_property_type_list" model="ir.ui.view">
+        <field name="name">estate.property.type.list</field>
+        <field name="model">estate.property.type</field>
+        <field name="arch" type="xml">
+            <list string="Types">
+                <field name="sequence" widget="handle"/>
+                <field name="name" string="Type"/>
+            </list>
+        </field>
+    </record>
+
+
+    <record id="estate_property_type_form" model="ir.ui.view">
+        <field name="name">estate.property.type.form</field>
+        <field name="model">estate.property.type</field>
+        <field name="arch" type="xml">
+            <form string="Properties">
+                <sheet>
+                    <div class="oe_button_box" name="button_box">
+                        <button type="action" name="%(estate_property_offer)d" icon="fa-dollar">
+                            <div class="o_form_field o_stat_info">
+                                <span class="o_stat_value">
+                                    <field name="offer_count" string="Offers" widget="statinfo"/>
+                                </span>
+                            </div>
+                        </button>
+                    </div>
+                    <h1>
+                        <field name="name" placeholder="Name"/>
+                    </h1>
+                    <notebook>
+                        <page string="Properties">
+                            <field name="property_ids">
+                                <list>
+                                    <field name="name" string="Title" />
+                                    <field name="expected_price" />
+                                    <field name="state" string="Status" readonly="1"/>
+                                </list>
+                            </field>
+                        </page>
+                    </notebook>
+                </sheet>
+            </form>
+        </field>
+    </record>
+
+</odoo>