Technical Onboarding - Server Framework 101

.gitignore

@@ -6,6 +6,9 @@ __pycache__/
 # C extensions
 *.so
 
+# IDE
+.vscode
+
 # Distribution / packaging
 .Python
 build/

estate/__init__.py

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

estate/__manifest__.py

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+{
+    "name": "Real Estate",
+    "application": True,
+    "depends": ["base"],
+    "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_property_offer_views.xml",
+        "views/estate_menus.xml",
+        "views/res_users_views.xml",
+    ],
+}

estate/models/__init__.py

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+from . import estate_property, estate_property_type, estate_property_tag, estate_property_offer, res_users

estate/models/estate_property.py

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+from odoo import models, fields, api
+from dateutil.relativedelta import relativedelta
+from odoo.exceptions import UserError, ValidationError
+from odoo.tools.float_utils import float_compare, float_is_zero
+
+
+class EstateProperty(models.Model):
+    _name = "estate.property"
+    _description = "Estate Property"
+    _order = "id desc"
+
+    name = fields.Char(string="Title", required=True)
+    description = fields.Text()
+    postcode = fields.Char()
+    date_availability = fields.Date(
+        string="Available From",
+        copy=False,
+        default=fields.Date.today() + relativedelta(days=3),
+    )
+    expected_price = fields.Float(required=True)
+    selling_price = fields.Float(readonly=True, copy=False)
+    bedrooms = fields.Integer(default=2)
+    living_area = fields.Integer(string="Living Area (sqm)")
+    facades = fields.Integer()
+    garages = fields.Boolean()
+    garden = fields.Boolean()
+    garden_area = fields.Integer(string="Garden Area (sqm)")
+    garden_orientation = fields.Selection(
+        selection=[
+            ("north", "North"),
+            ("south", "South"),
+            ("east", "East"),
+            ("west", "West"),
+        ]
+    )
+    active = fields.Boolean(default=True)
+    state = fields.Selection(
+        readonly=False,
+        selection=[
+            ("new", "New"),
+            ("offer_received", "Offer Received"),
+            ("offer_accepted", "Offer Accepted"),
+            ("sold", "Sold"),
+            ("canceled", "Canceled"),
+        ],
+        string="Status",
+        default="new",
+        required=True,
+    )
+    type_id = fields.Many2one("estate.property.type", string="Property Type")
+    buyer_id = fields.Many2one("res.partner", string="Buyer", copy=False, readonly=True)
+    salesperson_id = fields.Many2one(
+        "res.users", string="Salesman", default=lambda self: self.env.user
+    )
+    tag_ids = fields.Many2many("estate.property.tag", string="Tags")
+    offer_ids = fields.One2many("estate.property.offer", "property_id", string="Offers")
+    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)",
+        "A property expected price should be strictly positive.",
+    )
+
+    _check_selling_price = models.Constraint(
+        "CHECK(selling_price >= 0)", "A property selling price should 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):
+        best = max(self.offer_ids.mapped("price")) if self.offer_ids else 0
+        for record in self:
+            record.best_price = best
+
+    @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 = None
+
+    def action_set_sold(self):
+        for record in self:
+            if record.state == "canceled":
+                raise UserError("Canceled properties cannont be sold.")
+            record.state = "sold"
+        return True
+
+    def action_set_canceled(self):
+        for record in self:
+            if record.state == "sold":
+                raise UserError("Sold properties cannont be canceled.")
+            record.state = "canceled"
+        return True
+
+    @api.constrains("selling_price", "expected_price")
+    def _check_selling_price(self):
+        for record in self:
+            if not float_is_zero(record.selling_price, precision_digits=2):
+                if (
+                    float_compare(
+                        record.selling_price,
+                        0.9 * record.expected_price,
+                        precision_digits=2,
+                    )
+                    == -1
+                ):
+                    raise ValidationError(
+                        "The selling price must be at least 90% of the expected price"
+                    )
+
+    @api.ondelete(at_uninstall=False)
+    def _unlink_except_new_or_canceled(self):
+        if any(record.state == "new" or record.state == "canceled" for record in self):
+            raise UserError("Can't delete a new or canceled property.")

estate/models/estate_property_offer.py

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+from odoo import models, fields, api
+from dateutil.relativedelta import relativedelta
+from odoo.exceptions import UserError
+
+
+class EstatePropertyOffer(models.Model):
+    _name = "estate.property.offer"
+    _description = "Estate Property Offer"
+    _order = "price desc"
+
+    price = fields.Float()
+    status = fields.Selection(
+        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, string="Validity (days)")
+    date_deadline = fields.Date(
+        compute="_compute_date_deadline",
+        inverse="_inverse_date_deadline",
+        string="Deadline",
+    )
+    property_type_id = fields.Many2one(
+        string="Property Type", related="property_id.type_id", store=True
+    )
+
+    _check_price = models.Constraint(
+        "CHECK(price > 0)", "An offer price should be strictly positive."
+    )
+
+    @api.depends("create_date", "validity")
+    def _compute_date_deadline(self):
+        for record in self:
+            base_date = (
+                fields.Date.to_date(record.create_date)
+                if record.create_date
+                else fields.Date.today()
+            )
+            record.date_deadline = base_date + relativedelta(days=record.validity)
+
+    def _inverse_date_deadline(self):
+        for record in self:
+            base_date = (
+                fields.Date.to_date(record.create_date)
+                if record.create_date
+                else fields.Date.today()
+            )
+            delta = record.date_deadline - base_date
+            record.validity = delta.days
+
+    def action_set_accepted(self):
+        states = self.property_id.offer_ids.mapped("status")
+        for record in self:
+            if "accepted" in states:
+                raise UserError("Une offre a déjà été acceptée.")
+            record.status = "accepted"
+            record.property_id.buyer_id = self.partner_id
+            record.property_id.selling_price = self.price
+            record.property_id.state = "offer_accepted"
+        return True
+
+    def action_set_refused(self):
+        for record in self:
+            previous_status = record.status
+            record.status = "refused"
+            if previous_status == "accepted":
+                record.property_id.buyer_id = None
+                record.property_id.selling_price = 0
+        return True
+
+    @api.model
+    def create(self, vals_list):
+        for vals in vals_list:
+            prop = self.env["estate.property"].browse(vals["property_id"])
+            best_price = prop.best_price
+            if vals["price"] < best_price:
+                raise UserError(
+                    "You can't create an offer with a lower amount than an existing offer."
+                )
+            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 = "Estate Property Tag"
+    _order = "name"
+
+    name = fields.Char(required=True)
+    color = fields.Integer()
+
+    _check_unique_name = models.Constraint(
+        "UNIQUE(name)", "A property tag name should be unique."
+    )

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 = "Estate Property Type"
+    _order = "sequence,name"
+
+    name = fields.Char(required=True)
+    property_ids = fields.One2many("estate.property", "type_id", string="Properties")
+    sequence = fields.Integer()
+    offer_ids = fields.One2many(
+        "estate.property.offer", "property_type_id", string="Offers"
+    )
+    offer_count = fields.Integer(compute="_compute_offer_count")
+
+    _check_unique_name = models.Constraint(
+        "UNIQUE(name)", "A property tag name should be unique."
+    )
+
+    @api.depends("offer_ids")
+    def _compute_offer_count(self):
+        for record in self:
+            record.offer_count = len(record.offer_ids)
+        return True

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_id",
+        domain="['|',('state', '=', 'new'),('state', '=', 'offer_received')]",
+        string="Properties",
+    )

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

estate/views/estate_menus.xml

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+<?xml version="1.0"?>
+<odoo>
+    <menuitem id="estate_property_menu_root" name="Real Estate">
+        <menuitem id="estate_property_menu" name="Advertisements">
+            <menuitem id="estate_property_menu_action" action="estate_property_action"/>
+        </menuitem>
+        <menuitem id="estate_settings_menu" name="Settings">
+            <menuitem id="estate_property_type_menu_action" action="estate_property_type_action"/>
+            <menuitem id="estate_property_tag_menu_action" action="estate_property_tag_action"/>
+        </menuitem>
+    </menuitem>
+</odoo>

estate/views/estate_property_offer_views.xml

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+<?xml version="1.0"?>
+<odoo>
+    <record id="estate_property_offer_view_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="Property Type">
+                <sheet>
+                    <group>
+                        <field name="price"/>
+                        <field name="partner_id"/>
+                        <field name="validity"/>
+                        <field name="date_deadline"/>
+                        <field name="status"/>
+                    </group>
+                </sheet>
+            </form>
+        </field>
+    </record>
+
+    <record id="estate_property_offer_view_tree" 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="Offer" editable="top" decoration-danger="status == 'refused'" decoration-success="status == 'accepted'">
+                <field name="price"/>
+                <field name="partner_id"/>
+                <field name="validity"/>
+                <field name="date_deadline"/>
+                <button name="action_set_accepted" string="Accept" type="object" icon="fa-check" invisible="status"/>
+                <button name="action_set_refused" string="Refuse" type="object" icon="fa-times" invisible="status"/>
+            </list>
+        </field>
+    </record>
+
+    <record id="estate_property_offer_action" model="ir.actions.act_window">
+        <field name="name">Property Offers</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>
+</odoo>

estate/views/estate_property_tag_views.xml

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+<?xml version="1.0"?>
+<odoo>
+    <record id="estate_property_tag_view_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="Property Tag">
+                <sheet>
+                    <div class="oe_title">
+                        <h1><field name="name"/></h1>
+                    </div>
+                    <group>
+                        <field name="color" widget="color_picker"/>
+                    </group>
+                </sheet>
+            </form>
+        </field>
+    </record>
+
+    <record id="estate_property_tag_view_tree" 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="Tag" editable="top">
+                <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>