[ADD] estate: Create the 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',
+    'depends': ['base'],
+    'author': 'Shivam Saksham(shsak)',
+    'category': 'Sales',
+    '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_views.xml',
+        'views/estate_property_tag_views.xml',
+        'views/estate_property_offer_views.xml',
+        'views/estate_property_type_views.xml',
+        'views/res_users_views.xml',
+        'views/estate_menus.xml',
+    ],
+}

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
+from . import res_users

estate/models/estate_property.py

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+from odoo import models, fields, api, exceptions, _
+from odoo.tools.float_utils import float_compare
+
+
+class EstateProperty(models.Model):
+    _name = 'estate_property'
+    _description = 'Estate Property details'
+    _order = 'id desc'
+
+    name = fields.Char(required=True)
+    description = fields.Text()
+    postcode = fields.Char()
+    date_availability = fields.Date(
+        default=lambda self: fields.Date.add(fields.Date.today(), months=3),
+        copy=False
+    )
+    expected_price = fields.Float(required=True)
+    selling_price = fields.Float(readonly=True, copy=False)
+    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(
+        string='Garden Orientation',
+        selection=[
+            ('north', 'North'),
+            ('south', 'South'),
+            ('east', 'East'),
+            ('west', 'West')
+        ]
+    )
+    state = fields.Selection(
+        string='Status',
+        selection=[
+            ('new', 'New'),
+            ('offer_received', 'Offer Received'),
+            ('offer_accepted', 'Offer Accepted'),
+            ('sold', 'Sold'),
+            ('cancelled', 'Cancelled')
+        ],
+        default='new',
+        required=True,
+        copy=False
+    )
+    active = fields.Boolean(default=True)
+    property_type_id = fields.Many2one('estate.property.type', string='Type')
+    buyer = fields.Many2one('res.partner', copy=False)
+    salesperson = fields.Many2one('res.users', string='Salesman', default=lambda self: self.env.user)
+    tag_ids = fields.Many2many('estate.property.tag', string='Tag')
+    offer_ids = fields.One2many('estate.property.offer', 'property_id')
+    total_area = fields.Integer(compute='_compute_total_area')
+    best_price = fields.Float(compute='_compute_best_price')
+
+    _check_expected_price = models.Constraint(
+        'CHECK(expected_price > 0)',
+        'The Expected price cannot be 0 or less then 0'
+    )
+
+    _check_selling_price = models.Constraint(
+        'CHECK(selling_price >= 0)',
+        'The Selling price cannot be less then 0'
+    )
+
+    @api.constrains('selling_price', 'buyer', 'expected_price')
+    def _check_selling_price_90p(self):
+        for record in self:
+            if record.selling_price == 0:
+                return False
+            if float_compare((record.selling_price / record.expected_price) * 100, 90, precision_digits=2) < 0:
+                raise exceptions.ValidationError(_('Selling Price should be 90% or more of expected price.'))
+
+    @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 _onchange_garden(self):
+        if self.garden:
+            self.garden_orientation = 'north'
+            self.garden_area = 10
+        else:
+            self.garden_orientation = None
+            self.garden_area = 0
+
+    def action_cancel_property(self):
+        if self.filtered(lambda x: x.state == 'sold'):
+            raise exceptions.UserError(_('A sold property cannot be cancelled'))
+
+        self.state = 'cancelled'
+        return True
+
+    def action_property_sold(self):
+        if self.filtered(lambda x: x.state == 'cancelled'):
+            raise exceptions.UserError(_('A cancelled property cannot be sold'))
+
+        self.state = 'sold'
+        return True
+
+    @api.ondelete(at_uninstall=False)
+    def _unlink_if_new_or_sold(self):
+        if self.filtered(lambda x: x.state not in ('new', 'cancelled')):
+            raise exceptions.UserError(_('Cannot delete property which is not yer sold or cancelled'))

estate/models/estate_property_offer.py

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+from odoo import models, fields, api, exceptions, _
+
+
+class EstatePropertyOffer(models.Model):
+    _name = 'estate.property.offer'
+    _description = 'Offer to buy the property'
+    _order = 'price desc'
+
+    price = fields.Float()
+    status = fields.Selection(
+        string='Status',
+        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_offer_date_deadline', inverse='_inverse_offer_date_deadline')
+    property_type_id = fields.Many2one(related='property_id.property_type_id')
+
+    _check_offer_price = models.Constraint(
+        'CHECK(price > 0)',
+        'Offer Price cannot be 0 or below 0'
+    )
+
+    @api.depends('validity')
+    def _compute_offer_date_deadline(self):
+        for record in self:
+            if record.create_date:
+                record.date_deadline = fields.Date.add(record.create_date.date(), days=record.validity)
+            else:
+                record.date_deadline = fields.Date.add(fields.Date.today(), days=record.validity)
+
+    def _inverse_offer_date_deadline(self):
+        for record in self:
+            record.validity = (record.date_deadline - record.create_date.date()).days
+
+    def action_offer_accepted(self):
+        for record in self:
+            if record.property_id.buyer:
+                raise exceptions.UserError(_('An another offer is already accepted'))
+            record.property_id.selling_price = record.price
+            record.property_id.buyer = record.partner_id
+            record.property_id.state = 'offer_accepted'
+            record.status = 'accepted'
+        return True
+
+    def action_offer_refused(self):
+        for record in self:
+            record.status = 'refused'
+        return True
+
+    @api.model
+    def create(self, vals_list):
+        if len(vals_list) > 0:
+            prop = self.env['estate_property'].browse(vals_list[0]['property_id'])
+            if prop.best_price > vals_list[0]['price']:
+                raise exceptions.UserError(_('An offer with high price already exists.'))
+
+            prop.state = 'offer_received'
+
+        return super().create(vals_list)

estate/models/estate_property_tag.py

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+from odoo import models, fields
+
+
+class EstatePropertyTag(models.Model):
+    _name = 'estate.property.tag'
+    _description = 'Tag for the property'
+    _order = 'name'
+
+    name = fields.Char(required=True)
+    color = fields.Integer()
+
+    _check_unique_name = models.Constraint(
+        'unique(name)',
+        'A tag with the same name already exists.'
+    )

estate/models/estate_property_type.py

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+from odoo import models, fields, api
+
+
+class EstatePropertyType(models.Model):
+    _name = 'estate.property.type'
+    _description = 'Defines the type of Real Estate Property'
+    _order = 'name'
+
+    name = fields.Char(required=True)
+    property_ids = fields.One2many('estate_property', 'property_type_id', string='Properties')
+    sequence = fields.Integer(
+        default=1,
+        help='used to order the type based on the number of time it is used'
+    )
+    offer_ids = fields.One2many('estate.property.offer', 'property_type_id', string='Offers')
+    offer_count = fields.Integer(compute='_compute_offers_count')
+
+    _check_unique_name = models.Constraint(
+        'unique(name)',
+        'A tag with the same name already exists.'
+    )
+
+    @api.depends('offer_ids')
+    def _compute_offers_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 fields, models
+
+
+class ResUsers(models.Model):
+    _inherit = 'res.users'
+
+    property_ids = fields.One2many(
+        'estate_property',
+        'salesperson',
+        domain=['|', ('state', '=', 'new'), ('state', '=', 'offer_received')]
+    )

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_estate_property,access_estate_property,estate.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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+<odoo>
+    <menuitem id="estate_menu_root" name="Real Estate">
+        <menuitem id="estate_first_level_menu" name="Advertisement">
+            <menuitem id="estate_property_model_menu_action" action="estate_property_action" />
+        </menuitem>
+
+        <menuitem id="estate_first_level_setting_menu" name="Settings">
+            <menuitem id="estate_property_type_model_menu_action"
+                action="estate_property_type_action" />
+            <menuitem id="estate_property_tag_model_menu_action"
+                action="estate_property_tag_action" />
+        </menuitem>
+    </menuitem>
+</odoo>

estate/views/estate_property_offer_views.xml

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+<odoo>
+    <record id="estate_property_offer_list_view" 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-success="status == 'accepted'" decoration-danger="status == 'refused'">
+                <field name="price" />
+                <field name="partner_id" string="Partner" />
+                <field name="validity" string="Validity (days)" />
+                <field name="date_deadline" />
+                <button name="action_offer_accepted" string="Accept" type="object" icon="fa-check"
+                    invisible="status" />
+                <button name="action_offer_refused" string="Refuse" type="object" icon="fa-close"
+                    invisible="status" />
+            </list>
+        </field>
+    </record>
+
+    <record id="estate_property_offer_form_view" model="ir.ui.view">
+        <field name="name">Property Offer List</field>
+        <field name="model">estate.property.offer</field>
+        <field name="arch" type="xml">
+            <form string="Offer">
+                <sheet>
+                    <group>
+                        <field name="price" />
+                        <field name="partner_id" string="Partener" />
+                        <field name="validity" string="Validity (days)" />
+                        <field name="date_deadline" />
+                        <field name="status" />
+                    </group>
+                </sheet>
+            </form>
+        </field>
+    </record>
+
+    <record id="estaet_property_offer_view_action" model="ir.actions.act_window">
+        <field name="name">Estate Property Offers</field>
+        <field name="res_model">estate.property.offer</field>
+        <field name="domain">[('property_type_id', '=', active_id)]</field>
+        <field name="view_mode">list,form</field>
+    </record>
+</odoo>

estate/views/estate_property_tag_views.xml

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+<odoo>
+    <record id="estate_property_tag_list_view" model="ir.ui.view">
+        <field name="name">Tags</field>
+        <field name="model">estate.property.tag</field>
+        <field name="arch" type="xml">
+            <list editable="bottom">
+                <field name="name" />
+            </list>
+        </field>
+    </record>
+
+    <record id="estate_property_tag_action" model="ir.actions.act_window">
+        <field name="name">Property Tags</field>
+        <field name="res_model">estate.property.tag</field>
+        <field name="view_mode">list,form</field>
+    </record>
+</odoo>

estate/views/estate_property_type_views.xml

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+<odoo>
+    <record id="estate_property_type_properties_view" 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 class="oe_stat_button" name="estate.estaet_property_offer_view_action"
+                            type="action" >
+                            <div class="o_stat_info">
+                                <span class="o_stat_value">
+                                    <field name="offer_count" />
+                                </span>
+                                <span class="o_stat_text">
+                                    Offers
+                                </span>
+                            </div>
+                        </button>
+                    </div>
+                    <h1>
+                        <field name="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" />
+                                </list>
+                            </field>
+                        </page>
+                    </notebook>
+                </sheet>
+            </form>
+        </field>
+    </record>
+
+    <record id="estate_property_type_list_view" 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="Property Types">
+                <field name="sequence" widget="handle" />
+                <field name="name" />
+            </list>
+        </field>
+    </record>
+
+    <record id="estate_property_type_action" model="ir.actions.act_window">
+        <field name="name">Property Types</field>
+        <field name="res_model">estate.property.type</field>
+        <field name="view_mode">list,form</field>
+    </record>
+</odoo>