[IMP] estate: Chapter 8 - Computed, Inverse, and Onchange Fields

- Added computed, inverse, and onchange fields to improve user convenience and automation:
  total_area, best_price, validity, date_deadline, and garden

Author: wimar-odoo

estate/models/estate_property.py

@@ -1,4 +1,4 @@
-from odoo import fields, models
+from odoo import fields, models, api
 
 
 class EstateProperty(models.Model):
@@ -34,3 +34,27 @@ class EstateProperty(models.Model):
     buyer_id = fields.Many2one("res.partner", copy=False)
     tag_ids = fields.Many2many("estate.property.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")
+
+    @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")
+    def _compute_best_price(self):
+        for record in self:
+            if record.offer_ids:
+                record.best_price = max(self.offer_ids.mapped("price"))
+            else:
+                record.best_price = 0.0
+
+    @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 = ""

estate/models/estate_property_offer.py

@@ -1,4 +1,4 @@
-from odoo import models, fields
+from odoo import models, fields, api
 
 
 class EstatePropertyOffer(models.Model):
@@ -12,3 +12,14 @@ class EstatePropertyOffer(models.Model):
     )
     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_date_deadline", inverse="_inverse_date_deadline")
+
+    @api.depends("create_date", "validity")
+    def _compute_date_deadline(self):
+        for record in self:
+            record.date_deadline = fields.Date.add(record.create_date or fields.Date.today(), days=record.validity)
+
+    def _inverse_date_deadline(self):
+        for record in self:
+            record.validity = (record.date_deadline - record.create_date.date()).days

estate/views/estate_property_offer_views.xml

@@ -6,9 +6,13 @@
         <field name="arch" type="xml">
             <form string="New property offer">
                 <sheet>
-                    <field name="price"/>
-                    <field name="partner_id"/>
-                    <field name="status"/>
+                    <group>
+                        <field name="price"/>
+                        <field name="partner_id"/>
+                        <field name="validity" string="Validity (days)"/>
+                        <field name="date_deadline" string="Deadline"/>
+                        <field name="status"/>
+                    </group>
                 </sheet>
             </form>
         </field>
@@ -21,6 +25,8 @@
             <list string="Properties">
                 <field name="price"/>
                 <field name="partner_id"/>
+                <field name="validity" string="Validity (days)"/>
+                <field name="date_deadline" string="Deadline"/>
                 <field name="status"/>
             </list>
         </field>

estate/views/estate_property_views.xml

@@ -41,6 +41,7 @@
                         </group>
                         <group>
                             <field name="expected_price"/>
+                            <field name="best_price" string="Best offer"/>
                             <field name="selling_price"/>
                         </group>
                     </group>
@@ -54,6 +55,7 @@
                                 <field name="garden"/>
                                 <field name="garden_area"/>
                                 <field name="garden_orientation"/>
+                                <field name="total_area"/>
                             </group>
                         </page>
                         <page string="Offers">