19.0 real estate tutorial jakan

.gitignore

@@ -127,3 +127,5 @@ dmypy.json
 
 # Pyre type checker
 .pyre/
+
+i18n

estate/__init__.py

@@ -0,0 +1 @@
+from . import models

estate/__manifest__.py

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+{
+    'name': "Real Estate",
+    'version': "1.0",
+    'category': "Real Estate",
+    'summary': "Manage real estate properties",
+    'description': "This module allows managing properties",
+    'depends': ['base'],
+    'author': "jakan",
+    'license': "LGPL-3",
+    'application': True,
+    'installable': True,
+    'data': [
+        "security/ir.model.access.csv",
+        "views/estate_property_views.xml",
+        "views/estate_property_offer_views.xml",
+        "views/estate_property_type_views.xml",
+        "views/estate_property_tag_views.xml",
+        "views/estate_property_maintenance_views.xml",
+        "views/estate_property_investor_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 estate_property_maintenance
+from . import estate_property_investor
+from . import res_users

estate/models/estate_property.py

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+from dateutil.relativedelta import relativedelta
+
+from odoo import api, fields, models
+from odoo.exceptions import UserError, ValidationError
+from odoo.tools.float_utils import float_compare, float_is_zero
+from odoo import _
+
+
+class EstateProperty(models.Model):
+    _name = 'estate.property'
+    _description = 'Real Estate Property'
+    _order = 'id desc'
+
+    # Each field becomes a column in PostgreSQL table
+    name = fields.Char(required=True, default="Unknown")
+    description = fields.Text()
+    postcode = fields.Char()
+    date_availability = fields.Date(
+        default=lambda self: fields.Date.today() + relativedelta(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="Direction",
+        selection=[
+            ('north', "North"),
+            ('south', "South"),
+            ('east', "East"),
+            ('west', "West")])
+    active = fields.Boolean(default=True)
+    state = fields.Selection(
+        [
+            ('new', "New"),
+            ('offer_received', "Offer Received"),
+            ('offer_accepted', "Offer Accepted"),
+            ('sold', "Sold"),
+            ('cancelled', "Cancelled"),
+        ],
+        required=True,
+        copy=False,
+        default="new",
+    )
+    property_type_id = fields.Many2one("estate.property.type", string="Property Type")
+    buyer_id = fields.Many2one("res.partner", string="Buyer", copy=False)
+    seller_id = fields.Many2one("res.users", string="Seller", default=lambda self: self.env.user)
+    tag_ids = fields.Many2many("estate.property.tag", string="Property Tags")
+    offer_ids = fields.One2many("estate.property.offer", "property_id", string="Property Offers")
+    total_area = fields.Float(string="Total Area", compute="_compute_total_area", store=True)
+    best_price = fields.Float(string="Best Offer", compute="_compute_best_price")
+    maintenance_ids = fields.One2many("estate.property.maintenance", "property_id")
+    total_cost = fields.Float(string="Total Cost", compute="_compute_total_cost")
+
+    _check_expected_price = models.Constraint(
+        'CHECK(expected_price > 0)',
+        'Expected price must be strictly positive.',
+    )
+
+    _check_selling_price = models.Constraint(
+        'CHECK(selling_price > 0)',
+        'Selling price must be positive.',
+    )
+
+    @api.depends('living_area', 'garden_area')
+    def _compute_total_area(self):
+        for property in self:
+            property.total_area = property.living_area + property.garden_area
+
+    @api.depends('offer_ids.price')
+    def _compute_best_price(self):
+        for property in self:
+            if property.offer_ids:
+                property.best_price = max(property.offer_ids.mapped('price'))
+            else:
+                property.best_price = 0
+
+    @api.depends('maintenance_ids.cost')
+    def _compute_total_cost(self):
+        for maintenance in self:
+            maintenance.total_cost = sum(maintenance.maintenance_ids.mapped('cost'))
+
+    @api.constrains('expected_price', 'selling_price')
+    def _check_selling_price(self):
+        for property in self:
+            if float_is_zero(property.selling_price, precision_digits=2):
+                continue
+
+            minimum_price = property.expected_price * 0.9
+
+            if float_compare(property.selling_price, minimum_price, precision_digits=2) < 0:
+                raise ValidationError("Selling price cannot be lower than 90% of the expected price.")
+
+    @api.onchange("garden")
+    def _onchange_garden(self):
+        if self.garden:
+            self.garden_area = 10
+            self.garden_orientation = "north"
+        else:
+            self.garden_area = 0
+            self.garden_orientation = False
+
+    @api.ondelete(at_uninstall=False)
+    def _check_property_deletion(self):
+        for property in self:
+            if property.state not in ('new', 'cancelled'):
+                raise UserError("You can only delete properties in New or Cancelled state")
+
+    def action_sold(self):
+        for property in self:
+            if property.state == 'cancelled':
+                raise UserError(_("Sold property cannot be cancelled"))
+            if not property.buyer_id:
+                raise UserError(_("Without accept any offer we can't sold it"))
+            if property.maintenance_ids:
+                for maintenance in property.maintenance_ids:
+                    if maintenance.status in ('new', 'cancle'):
+                        raise UserError(_("Maintenance cost must be Approved or Done"))
+            property.state = 'sold'
+        return True
+
+    def action_cancel(self):
+        for property in self:
+            if property.state == 'sold':
+                raise UserError("Cancelled property cannot be sold")
+            property.state = 'cancelled'
+        return True

estate/models/estate_property_investor.py

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+from odoo import fields, models
+
+
+class EstatePropertyInvestor(models.Model):
+    _name = 'estate.property.investor'
+    _description = 'Property Investor'
+    _inherits = {'res.partner': 'partner_id'}
+
+    partner_id = fields.Many2one('res.partner', required=True, ondelete='cascade')

estate/models/estate_property_maintenance.py

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+from odoo import fields, models
+from odoo.exceptions import UserError
+from odoo.tools.float_utils import float_is_zero
+
+
+class EstatePropertyMaintenance(models.Model):
+    _name = 'estate.property.maintenance'
+    _description = 'Estate Property maintenance'
+
+    title = fields.Char(required=True)
+    cost = fields.Float(string="Cost")
+    status = fields.Selection(
+        [
+            ('new', "New"),
+            ('approved', "Approved"),
+            ('done', "Done"),
+            ('cancle', "Cancle")
+        ],
+        required=True,
+        default="new",
+    )
+
+    property_id = fields.Many2one('estate.property', required=True)
+
+    def maintenance_accept(self):
+        for maintenance in self:
+            if float_is_zero(maintenance.cost, precision_digits=2):
+                raise UserError("Maintenance cost must be greater than zero")
+
+            maintenance.status = "approved"
+        return True
+
+    def maintenance_refuse(self):
+        for maintenance in self:
+            maintenance.status = "cancle"
+        return True

estate/models/estate_property_offer.py

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+from dateutil.relativedelta import relativedelta
+
+from odoo import api, fields, models
+from odoo.exceptions import UserError, ValidationError
+
+
+class EstatePropertyOffer(models.Model):
+    _name = 'estate.property.offer'
+    _description = 'Estate 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)
+    property_id = fields.Many2one('estate.property', string="Property", required=True)
+    validity = fields.Integer(default=7)
+    date_deadline = fields.Date(
+        compute="_compute_date_deadline",
+        inverse="_inverse_date_deadline",
+        store=True
+    )
+    property_type_id = fields.Many2one("estate.property.type", related="property_id.property_type_id", store=True, readonly=True)
+
+    _check_offer_price_positive = models.Constraint(
+        'CHECK(price > 0)',
+        'Offer price must be positive.',
+    )
+
+    @api.depends("validity", "create_date")
+    def _compute_date_deadline(self):
+        for offer in self:
+            if offer.create_date:
+                offer.date_deadline = (
+                    offer.create_date.date()
+                    + relativedelta(days=offer.validity)
+                )
+            else:
+                offer.date_deadline = fields.Date.today() + relativedelta(days=offer.validity)
+
+    def _inverse_date_deadline(self):
+        for offer in self:
+            if offer.create_date and offer.date_deadline:
+                offer.validity = (
+                    offer.date_deadline
+                    - offer.create_date.date()
+                ).days
+
+    @api.model
+    def create(self, vals_list):
+        for vals in vals_list:
+            property_id = vals.get("property_id")
+            price = vals.get("price")
+            property_rec = self.env["estate.property"].browse(property_id)
+
+            # Prevent lower offer
+            existing_prices = property_rec.offer_ids.mapped("price")
+            if existing_prices and price < max(existing_prices):
+                raise UserError("You cannot create an offer lower than an existing offer")
+
+            # Set property state
+            property_rec.state = "offer_received"
+
+        return super().create(vals_list)
+
+    @api.constrains('property_id')
+    def _check_property_state(self):
+        for offer in self:
+            if offer.property_id.state in ('sold', 'cancelled'):
+                raise ValidationError("You cannot add an offer on a Sold or Cancelled property")
+
+    def action_accept(self):
+        for offer in self:
+            property_rec = offer.property_id
+
+            if property_rec.buyer_id:
+                raise UserError("Property already accepted")
+
+            other_offer = property_rec.offer_ids - offer
+            other_offer.write({'status': 'refused'})
+
+            offer.status = "accepted"
+            property_rec.write({
+                'buyer_id': offer.partner_id.id,
+                'selling_price': offer.price,
+                'active': False,
+            })
+        return True
+
+    def action_refuse(self):
+        for offer in self:
+            offer.status = "refused"
+        return True

estate/models/estate_property_tag.py

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+from odoo import fields, models
+
+
+class EstatePropertyTag(models.Model):
+    _name = 'estate.property.tag'
+    _description = 'Estate Property Tag'
+    _order = 'name'
+
+    name = fields.Char(required=True)
+    color = fields.Integer()
+
+    _unique_property_tag_name = models.Constraint(
+        'UNIQUE(name)',
+        'Property tag name must be unique.',
+    )

estate/models/estate_property_type.py

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+from odoo import fields, models, api
+
+
+class EstatePropertyType(models.Model):
+    _name = 'estate.property.type'
+    _description = 'Estate Property Type'
+    _order = 'sequence, name'
+
+    name = fields.Char(required=True)
+    sequence = fields.Integer(default=1)
+    property_ids = fields.One2many("estate.property", "property_type_id", string="Properties")
+    offer_ids = fields.One2many("estate.property.offer", "property_type_id")
+    offer_count = fields.Integer(string="Offers", compute="_compute_offer_count")
+
+    _unique_property_type_name = models.Constraint(
+        'UNIQUE(name)',
+        '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/res_users.py

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+from odoo import api, fields, models
+
+
+class ResUsers(models.Model):
+    _inherit = "res.users"
+
+    property_ids = fields.One2many(
+        'estate.property',
+        'seller_id',
+    )
+    total_expected = fields.Float(compute="_compute_total_expected")
+
+    @api.depends('property_ids.expected_price', 'property_ids.state')
+    def _compute_total_expected(self):
+        sum_expected = dict(self.env['estate.property']._read_group(
+            domain=[('state', '!=', 'sold'), ('seller_id', 'in', self.ids)],
+            aggregates=['expected_price:sum'],
+            groupby=['seller_id']
+        ))
+        for record in self:
+            record.total_expected = sum_expected.get(record, 0.0)

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
+access_estate_property_type,access_estate_property_type,model_estate_property_type,base.group_user,1,1,1,1
+access_estate_property_tag,access_estate_property_tag,model_estate_property_tag,base.group_user,1,1,1,1
+access_estate_property_offer,access_estate_property_offer,model_estate_property_offer,base.group_user,1,1,1,1
+access_estate_property_maintenance,access_estate_property_maintenance,model_estate_property_maintenance,base.group_user,1,1,1,1
+access_estate_property_investor,access_estate_property_investor,model_estate_property_investor,base.group_user,1,1,1,1