[ADD] estate: adding a 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',
+    'category': 'tutorials',
+    'depends': ['base'],
+    'summary': 'Chapter 2: Server Framework 101',
+    'description': "",
+    'installable': True,
+    'application': True,
+    'data': [
+        'security/ir.model.access.csv',  
+        'views/estate_property_views.xml', 
+        'views/estate_property_type_views.xml', 
+        'views/estate_property_tag_views.xml', 
+        'views/estate_menus.xml', 
+    ],
+    'license':'LGPL-3'
+}

estate/models/__init__.py

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+from . import estate_property
+from . import estate_property_type
+from . import estate_property_tags
+from . import estate_property_offer

estate/models/estate_property.py

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+from odoo.tools import float_compare, float_is_zero
+from odoo import api,fields, models, exceptions
+
+#Class of EstateProperty to define fields of database table
+class EstateProperty(models.Model):
+    _name = 'estate.property'
+    _description = 'Real Estate Properties'
+
+    name = fields.Char(string='Name',required=True)
+    description = fields.Text(string='Description')
+    postcode = fields.Char(string='Postcode')
+    date_availability = fields.Date(string='Available From', copy=False, default=fields.Date.add(fields.Date.today(), months=3))
+    expected_price = fields.Float(string='Expected Price', required=True)
+    selling_price = fields.Float(string='Selling Price ', readonly=True, copy=False)
+    bedrooms = fields.Integer(string='Bedrooms', default=2)
+    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(
+        string ='Garden Orientation',
+        selection=[('north','North'),
+        ('south','South'),
+        ('east','East'),
+        ('west','West')])
+    active = fields.Boolean('Active',default=True)
+    state = fields.Selection(
+        selection=[
+            ('new','New'),
+            ('offer_received','Offer Received'),
+            ('offer_accepted','Offer Accepted'),
+            ('sold','Sold'),('cancelled','Cancelled')],
+        string='State',
+        required=True,
+        copy=False,
+        default='new')
+    total_area = fields.Float(string='Total Aream(sqm)',compute='_compute_total_area')
+    property_type_id = fields.Many2one('estate.property.type', string='Property Type')
+    user_id=fields.Many2one('res.users', string='Salesperson', default=lambda self: self.env.user)
+    partner_id = fields.Many2one('res.partner', string='Buyer',copy=False)
+    tag_ids = fields.Many2many('estate.property.tags',string='Tags')
+    offer_ids = fields.One2many('estate.property.offer','property_id',string='Offers') #One2Many field
+    best_prices = fields.Float(string='Best Offer',compute='_compute_best_offer')
+
+    _sql_constraints = [
+        ('check_expected_price','CHECK(expected_price > 0)','Expected Price must be positive'),
+        ('check_selling_price','CHECK(selling_price > 0)','Selling Price must be positive'),
+    ] 
+
+    #Function of computing total area
+    @api.depends('living_area','garden_area')
+    def _compute_total_area(self):
+        for record in self:
+            record.total_area=record.living_area+record.garden_area
+
+    #Fucntion of deciding best price among available prices
+    @api.depends('offer_ids.price')
+    def _compute_best_offer(self):
+        for property in self:
+            if property.offer_ids:
+                property.best_prices = max(property.offer_ids.mapped('price'),default=0.0)
+            else:
+                property.best_prices=0.0
+
+    @api.onchange('garden')
+    def onchange_check_garden_status(self):
+        if self.garden:
+            self.garden_area =10
+            self.garden_orientation ='north'
+        else:
+            self.garden_area =0
+            self.garden_orientation =''
+
+    #Function to perform action when property Sold
+    def action_to_sold_property(self):
+        for record in self:
+            if record.state == 'cancelled':
+                raise exceptions.UserError('A cancelled property can not be sold')
+            record.state = 'sold'
+        return True
+
+    #Function to perform action when property Canceled
+    def action_to_cancel_property(self):
+        for record in self:
+            if record.state == 'sold':
+                raise exceptions.UserError('A sold property can not be cancelled')
+            record.state = 'cancelled'
+        return True
+
+    #constrain of selling price not fall more lower than 90% expected price
+    @api.constrains('selling_price','expected_price')
+    def _check_selling_price(self):
+        for record in self:
+            if float_is_zero(record.selling_price,2) != 1:
+                threshold = record.expected_price * 0.90
+                if float_compare(threshold,record.selling_price,2) == 1:
+                    raise exceptions.ValidationError("The selling price must be at least 90% of the expected price!You must reduce the expected price if you want to accept this offer.")
+
+

estate/models/estate_property_offer.py

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+from dateutil.relativedelta import relativedelta
+from odoo import fields,models,api, exceptions
+
+class EstatePropertyOffer(models.Model):
+    _name = "estate.property.offer"
+    _description = "Property Offers"
+
+    price = fields.Float(string="Price", required=True)
+    status = fields.Selection(
+        selection=[
+        ('accepted','Accepted'),
+        ('refused','Refused')],
+        string="Status",
+        copy=False,
+        readonly=True)
+    partner_id = fields.Many2one("res.partner",string="Partner")
+    property_id = fields.Many2one("estate.property",string="Property")
+    validate = fields.Integer(string="Validity(days)",default=7)
+    date_deadline = fields.Date(string="Deadline",
+                default=fields.Date.today(),
+                compute="_compute_deadline",
+                inverse="_update_validity")
+
+    _sql_constraints = [
+        ('check_price','CHECK(price > 0)','Offer Price must be positive'),
+    ] 
+
+    #Function of implementing comptue field and inverse function on validity days and date dadeline
+    @api.depends("validate","create_date")
+    def _compute_deadline(self):
+        for date in self:
+            if date.create_date:
+                date.date_deadline = date.create_date + relativedelta(days=date.validate)
+            else:
+                date.date_deadline = fields.Date.today() + relativedelta(days=date.validate)
+
+    def _update_validity(self):
+        for offer in self:
+            if offer.date_deadline:
+                offer.validate = (offer.date_deadline - fields.Date.today()).days
+            else:
+                offer.validate = 7
+
+    #Function to perform action when offer accpeted
+    def action_accept(self):
+        for record in self:
+            if record.status == 'accepted':
+                raise exceptions.UserError("This property has already accepted offer!")
+
+            record.property_id.selling_price = record.price
+            record.property_id.partner_id = record.partner_id
+
+            record.status = 'accepted'
+
+            other_offers = self.search([
+                ('property_id', '=', record.property_id.id),
+                ('id', '!=', record.id),
+                ('status', '=', '')
+            ])
+
+            other_offers.write({'status':'refused'})
+
+    #Function to perform action when offer refused
+    def action_refuse(self):
+        for record in self:
+            record.status = 'refused' 
+

estate/models/estate_property_tags.py

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+from odoo import fields,models
+
+class EstatePropertyTyags(models.Model):
+    _name = "estate.property.tags"
+    _description = "Property Tags"
+
+    name = fields.Char(string="Name", required=True)
+
+    _sql_constraints = [
+        ('name_uniq', 'unique (name)', "Tag name already exists!"),
+    ]

estate/models/estate_property_type.py

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+from odoo import fields,models
+
+class EstatePropertyType(models.Model):
+    _name = "estate.property.type"
+    _description =  "Property Types"
+
+    name = fields.Char(string="Name", required=True)
+
+    _sql_constraints = [
+        ('name_uniq', 'unique (name)', "Type name already exists!"),
+    ]

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_tags,access_estate_property_tags,estate.model_estate_property_tags,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>
+    <!-- Basic menu items -->
+    <menuitem id="estate_property_menu_root" name="Real Estate">
+        <menuitem id="estate_property_advertisement_menu" name="Advertisements">
+            <menuitem id="estate_property_advertisement_action"  action="estate_property_action"/>
+        </menuitem>
+        <!-- Settings Menu -->
+        <menuitem id="estate_property_settings_menu" name="Settings">
+            <!-- Property Type-->
+            <menuitem id="estate_property_settings_types_action"  action="estate_property_type_action"/> 
+            <!-- Property Tags-->
+            <menuitem id="estate_property_settings_tags_action"  action="estate_property_tag_action"/> 
+        </menuitem>
+    </menuitem>
+</odoo>

estate/views/estate_property_tag_views.xml

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+<odoo>
+    <!-- Property Tag Action views-->
+    <record id = "estate_property_tag_action" model = "ir.actions.act_window">
+        <field name ="name">Property Tags</field>
+        <field name ="res_model">estate.property.tags</field>
+        <field name="view_mode">list,form</field>
+    </record>
+</odoo>

estate/views/estate_property_type_views.xml

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+<odoo>
+    <!-- Created actions for the model estate.property.type -->
+    <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>
+    <!-- Form view of property type -->
+    <record id="estate_property_type_form_view" model="ir.ui.view">
+        <field name="name">estate.property.form</field>
+        <field name="model">estate.property.type</field>
+        <field name="arch" type="xml">
+            <form string="Property Types">
+                <sheet>
+                    <group>
+                        <group>
+                            <h1 class="mb32">
+                                <field name="name" class="mb16"/>
+                            </h1>
+                        </group>
+                    </group>
+                </sheet>
+            </form>
+        </field>
+    </record>
+</odoo>

estate/views/estate_property_views.xml

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+<odoo>
+    <!-- Created actions for the model estate.property -->
+    <record id = "estate_property_action" model="ir.actions.act_window">
+        <field name="name">Properties</field>
+        <field name="res_model">estate.property</field>
+        <field name="view_mode">list,form</field>
+    </record>    
+    <!-- List view of property -->
+    <record id = "estate_property_list_view" model= "ir.ui.view">
+        <field name="name">estate.property.tree</field>
+        <field name="model">estate.property</field>
+        <field name="arch" type="xml">
+            <list string= "Properties" >
+                <field name="name" string ="Title"/>
+                <field name="postcode"/>
+                <field name="bedrooms"/>
+                <field name="living_area"/>
+                <field name="expected_price"/>
+                <field name="selling_price"/>
+                <field name="date_availability"/>
+                <field name="property_type_id"/>
+            </list>
+        </field>
+    </record>
+    <!-- Form view of property -->
+    <record id="estate_property_form_view" model="ir.ui.view">
+        <field name="name">estate.property.view.form</field>
+        <field name="model">estate.property</field>
+        <field name="arch" type="xml">
+            <form string="Estate Property">
+                <header>
+                    <button string="SOLD" name="action_to_sold_property" type="object" class="oe_highlight"/>
+                    <button string="CANCEL" name="action_to_cancel_property" type="object" class="oe_highlight"/>
+                </header>
+                <sheet>
+                        <group>
+                            <h1 class="mb32">
+                                <field name="name" class="mb16"/>   
+                            </h1>
+                        </group>
+                    <group>
+                        <group>
+                            <field name="tag_ids" widget="many2many_tags"/>
+                            <field name="state"/>
+                            <field name="property_type_id"/>
+                            <field name="postcode"/>
+                            <field name="date_availability"/>
+                        </group>
+                        <group>
+                            <field name="expected_price"/>
+                            <field name="best_prices"/>
+                            <field name="selling_price"/>
+                        </group>
+                    </group>
+                    <notebook>
+                        <page string="Description">
+                            <group>
+                                <field name="description"/>
+                                <field name="bedrooms"/>
+                                <field name="living_area"/>
+                                <field name="facades"/>
+                                <field name="garage"/>
+                                <field name="garden"/>
+                                <field name="garden_area"/>
+                                <field name="garden_orientation"/>
+                                <field name="total_area"/>
+                            </group>
+                        </page>
+                        <page string="Offers">
+                            <field name="offer_ids" widget="one2many_tags">
+                            <list>
+                                <field name="price">Price</field>
+                                <field name="partner_id">Partner</field>
+                                <field name="validate"/>
+                                <field name="date_deadline"/>
+                                <button name="action_accept" string="Accept" type="object" icon="fa-check"/>
+                                <button name="action_refuse" string="Refuse" type="object" icon="fa-times"/>
+                                <field name="status">Status</field> 
+                            </list>        
+                        </field>   
+                        </page>
+                        <page string="Other Info">
+                            <group>
+                                <field name="user_id"/>
+                                <field name="partner_id"/>
+                            </group>
+                        </page>
+                    </notebook>   
+                </sheet>
+            </form>
+        </field>
+    </record>
+    <!-- Property search bar features-->
+    <record id="estate_property_search" model="ir.ui.view">
+        <field name="name">estate.property.search</field>
+        <field name="model">estate.property</field>
+        <field name="arch" type="xml">
+            <search string="Property Search">
+                <field name="bedrooms"/>
+                <field name="living_area"/>
+                <field name="facades"/>
+                <field name="garage"/>
+                <field name="garden"/>
+                <field name="garden_area"/>
+                <field name="property_type_id"/>
+                <separator/>
+                <filter string="Available" name="date_availability" domain="[('date_availability', '>=', context_today())]"/>
+                <filter string="New or Offer Recieved" name="state" domain="['|', ('state', '=', 'new'),('state', '=', 'offer_received')]"/>
+                <group expand="1" string="Group By">
+                    <filter string="Postcode" name="postcode" context="{'group_by':'postcode', 'residual_visible':True}"/>
+                </group>
+            </search>
+        </field>
+    </record>
+</odoo>