daloe - Technical Training

estate/__init__.py

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+from . import models

estate/__manifest__.py

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+{
+    'name': "Estate",
+    'depends': ['base'],
+    'application': True,
+    'installable': True,
+    "author": "daloe",
+    "license": "LGPL-3",
+    "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_menus.xml',
+        'views/res_users_views.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 dateutil.relativedelta import relativedelta
+
+from odoo import api, fields, models
+from odoo.exceptions import UserError, ValidationError
+from odoo.tools import float_compare
+
+
+class EstateProperty(models.Model):
+    _name = "estate.property"
+    _description = "technical training estate property model"
+    _order = "id desc"
+
+    # RELATIONAL FIELDS
+    estate_property_type_id = fields.Many2one(
+        "estate.property.type",
+        ondelete="set null",
+    )
+
+    estate_property_tag_ids = fields.Many2many(
+        "estate.property.tag",
+    )
+
+    buyer_id = fields.Many2one(
+        "res.partner",
+        ondelete="set null",
+    )
+
+    seller_id = fields.Many2one(
+        "res.users",
+        ondelete="set null",
+        default=lambda self: self.env.user.id,
+    )
+
+    estate_property_offer_ids = fields.One2many(
+        "estate.property.offer",
+        "estate_property_id",
+        copy=False,
+    )
+
+    # BASIC FIELDS
+    name = fields.Char(
+        "Estate Property",
+        required=True,
+    )
+
+    active = fields.Boolean(
+        default=True,
+    )
+
+    status = fields.Selection(
+        [["new", "New"], ["offer_received", "Offer Received"], ["offer_accepted", "Offer Accepted"], ["sold", "Sold"], ["cancelled", "Cancelled"]],
+        default="new",
+    )
+
+    description = fields.Text(
+        "Description"
+    )
+
+    postcode = fields.Char(
+        "Postcode"
+    )
+
+    date_availability = fields.Date(
+        "Available From",
+        copy=False,
+        default=fields.Date.today() + relativedelta(months=+3),
+    )
+
+    expected_price = fields.Float(
+        "Expected Price",
+        required=True,
+    )
+
+    selling_price = fields.Float(
+        "Selling Price",
+        copy=False,
+        readonly=True,
+    )
+
+    bedrooms = fields.Integer(
+        "Bedrooms",
+        default=2,
+    )
+
+    living_area = fields.Integer(
+        "Living Area (sqm)"
+    )
+
+    facades = fields.Integer(
+        "Facades"
+    )
+
+    garage = fields.Boolean(
+        "Garage",
+        default=False,
+    )
+
+    garden = fields.Boolean(
+        "Garden",
+        default=False,
+    )
+
+    garden_area = fields.Integer(
+        "Garden Area"
+    )
+
+    garden_orientation = fields.Selection(
+        [["north", "North"], ["east", "East"], ["south", "South"], ["west", "West"]],
+    )
+
+    # COMPUTED FIELDS
+    total_area = fields.Integer(compute="_compute_total_area")
+
+    best_price = fields.Float("Best Offer", compute="_compute_best_price")
+
+    # SQL CONSTRAINTS & INDEXES
+    _check_expected_price_positive = models.Constraint(
+        "CHECK(expected_price > 0)",
+        "expected_price <= 0"
+    )
+
+    _check_selling_price_positive = models.Constraint(
+        "CHECK(selling_price is null or selling_price > 0)",
+        "selling_price <= 0"
+    )
+
+    # COMPUTE & INVERSE & SEARCH
+    @api.depends("living_area")
+    def _compute_total_area(self):
+        for estate in self:
+            null_safe_garden_area = 0
+            if estate.garden_area:
+                null_safe_garden_area = estate.garden_area
+
+            estate.total_area = estate.living_area + null_safe_garden_area
+
+    @api.depends("estate_property_offer_ids")
+    def _compute_best_price(self):
+        for estate in self:
+            if len(estate.estate_property_offer_ids) > 0:
+                estate.best_price = max(self.estate_property_offer_ids.mapped("price"))
+            else:
+                estate.best_price = 0
+
+    # PYTHON CONSTRAINS & ONCHANGE
+    @api.constrains('selling_price')
+    def _check_ninety_percent_of_expected(self):
+        for estate in self:
+            if estate.selling_price > 0:    # restrict checks to only when offer acceptance happens
+                if float_compare(estate.selling_price, 0.9 * estate.expected_price, 2) < 0:
+                    raise ValidationError("Offer is <90% of expected")
+
+    @api.onchange("garden")
+    def _onchange_garden_orientation(self):
+        if self.garden:
+            self.garden_area = 10
+            self.garden_orientation = "north"
+        else:
+            self.garden_area = None
+            self.garden_orientation = None
+
+    # ORM OVERRIDES
+    @api.ondelete(at_uninstall=False)
+    def _unlink_if_new_cancelled(self):
+        for user in self:
+            if user.status not in ("new", "cancelled"):
+                error = self.env._("Cannot delete active listing")
+                raise UserError(error)
+
+    # ACTIONS
+    def action_set_sold(self):
+        self.ensure_one()   # this button should only exist on a form
+        if not self.active:
+            error = self.env._("Cannot set inactive/cancelled listing to sold")
+            raise UserError(error)
+
+        self.status = "sold"
+        return True
+
+    def action_set_cancelled(self):
+        self.ensure_one()   # this button should only exist on a form
+        if self.status == "sold":
+            error = self.env._("Cannot set sold listing to cancelled")
+            raise UserError(error)
+        self.status = "cancelled"
+        return True
+
+    def action_uncancel(self):
+        self.ensure_one()
+        self.status = "new"
+        return True
+
+    # BUSINESS LOGIC
+    def set_offer_received(self):
+        for estate in self:
+            estate.status = "offer_received"

estate/models/estate_property_offer.py

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+from datetime import timedelta
+
+from odoo.exceptions import UserError
+from odoo import models, fields, api
+
+
+class EstatePropertyOffer(models.Model):
+    _name = "estate.property.offer"
+    _description = "tech training estate property tag"
+    _order = "price desc"
+
+    # RELATIONAL FIELDS
+    estate_property_id = fields.Many2one(
+        "estate.property",
+        ondelete="cascade",
+        required=True,
+    )
+
+    property_type_id = fields.Many2one(
+        related="estate_property_id.estate_property_type_id",
+        store=True,
+    )
+
+    buyer_id = fields.Many2one(
+        "res.partner",
+        string="Partner",
+        ondelete="cascade",
+        default=lambda self: self.env.user.partner_id.id,
+        required=True,
+    )
+
+    # BASIC FIELDS
+    price = fields.Float(
+        string="Price",
+        required=True,
+        aggregator="max",
+    )
+
+    status = fields.Selection(
+        [["new", "New"], ["refused", "Refused"], ["accepted", "Accepted"]],
+        default="new",
+        copy=False,
+    )
+
+    # COMPUTED FIELDS
+    validity = fields.Integer(default=7)
+
+    date_deadline = fields.Date(string="Deadline", compute="_compute_date_deadline", inverse="_inverse_date_deadline")
+
+    # SQL CONSTRAINTS & INDEXES
+    _check_positive_offer = models.Constraint(
+        "CHECK(price > 0)",
+        "Offer price must be greater than 0"
+    )
+
+    # COMPUTE & INVERSE & SEARCH
+    @api.depends("validity")
+    def _compute_date_deadline(self):
+        for estate in self:
+            if estate.create_date:
+                estate.date_deadline = estate.create_date + timedelta(days=estate.validity)
+            else:
+                estate.date_deadline = fields.Date.today() + timedelta(days=estate.validity)
+
+    def _inverse_date_deadline(self):
+        for estate in self:
+            new_validity = (estate.date_deadline - fields.Date.today()).days
+            if new_validity < 0:
+                raise UserError("validity < 0")
+            estate.validity = (estate.date_deadline - fields.Date.today()).days
+
+    # ORM OVERRIDES
+    @api.model
+    def create(self, vals):
+        for new_offer in vals:
+            current_property_offers_price_asc = self.env["estate.property.offer"].search(
+                [('estate_property_id', '=', new_offer.get("estate_property_id"))]
+            ).sorted("price asc")
+
+            estate_property = self.env["estate.property"].browse(new_offer.get("estate_property_id"))
+            if not current_property_offers_price_asc or len(current_property_offers_price_asc) == 0:
+                if estate_property.status == "new":
+                    estate_property.set_offer_received()
+                return super().create(vals)
+
+            if new_offer.get("price") < current_property_offers_price_asc[0].price:
+                raise UserError("submitted offer < lowest current offer")
+
+            if estate_property.status == "new":
+                estate_property.set_offer_received()
+        return super().create(vals)
+
+    @api.model
+    def write(self, vals):
+        updated_price = vals.get("price")
+        if not updated_price:
+            return super().write(vals)  # just skip, since logic only applies if there's updated price
+
+        current_property_offers_price_asc = self.estate_property_id.estate_property_offer_ids.sorted("price asc")
+
+        if self == current_property_offers_price_asc[0]:
+            return super().write(vals)
+
+        if updated_price < current_property_offers_price_asc[0].price:
+            raise UserError("submitted offer < lowest current offer")
+
+        return super().write(vals)
+
+    # ACTIONS
+    def action_accept_offer(self):
+        self.ensure_one()
+        for offer in self:
+            if fields.Date.today() > offer.date_deadline:
+                raise UserError("offer expired")
+
+            estate = offer.estate_property_id
+            for recur_offer in estate.estate_property_offer_ids:
+                if recur_offer.status == "accepted":
+                    # more foolproof than just checking estate_property.status
+                    raise UserError("another offer already accepted")
+
+            estate.buyer_id = offer.buyer_id
+            estate.selling_price = offer.price
+            estate.status = "offer_accepted"
+
+            offer.status = "accepted"
+        return True
+
+    def action_refuse_offer(self):
+        self.ensure_one()
+        self.status = "refused"
+
+        estate = self.estate_property_id
+        estate.buyer_id = None
+        estate.selling_price = None
+        estate.status = "offer_received"
+        return True

estate/models/estate_property_tag.py

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+from odoo import models, fields
+
+
+class EstatePropertyTag(models.Model):
+    _name = 'estate.property.tag'
+    _description = 'tech training estate property tag'
+    _order = 'name asc'
+
+    # RELATIONAL FIELDS
+    estate_property_ids = fields.Many2many(
+        "estate.property",
+    )
+
+    # BASIC FIELDS
+    name = fields.Char(
+        "Tag",
+        required=True,
+    )
+
+    color = fields.Integer(
+        string="Color",
+        default=0,
+    )
+
+    # SQL CONSTRAINTS & INDEXES
+    _check_unique_name = models.UniqueIndex(
+        "(UPPER(name))",
+        "Tag should be unique"
+    )