[IMP] Chapter-8-estate: Compute field and OnChanges Implemented for Estate Application

Author: shsak-odoo

estate/models/estate_property.py

@@ -1,4 +1,4 @@
-from odoo import models, fields
+from odoo import models, fields, api
 
 
 class EstateProperty(models.Model):
@@ -37,3 +37,24 @@ class EstateProperty(models.Model):
     salesperson = fields.Many2one("res.users", string="Salesman", default=lambda self: self.env.user)
     tag_ids = fields.Many2many("estate.property.tag", string="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.price")
+    def _compute_best_price(self):
+        for record in self:
+            record.best_price = max(record.offer_ids.mapped('price') or [0])
+
+    @api.onchange("garden")
+    def _onchange_garden(self):
+        if self.garden:
+            self.garden_orientation = 'north'
+            self.garden_area = 10
+        else:
+            self.garden_orientation = ''
+            self.garden_area = 0

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):
@@ -13,3 +13,17 @@ 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_offer_date_deadline", inverse="_inverse_offer_date_deadline")
+
+    @api.depends("create_date", "validity")
+    def _compute_offer_date_deadline(self):
+        for record in self:
+            if record.create_date:
+                record.date_deadline = fields.Date.add(record.create_date.date(), days=record.validity)
+            else:
+                record.date_deadline = fields.Date.add(fields.Date.today(), days=record.validity)
+ 
+    def _inverse_offer_date_deadline(self):
+        for record in self:
+            record.validity = (record.date_deadline - record.create_date.date()).days

estate/views/estate_property_offer_views.xml

@@ -6,6 +6,8 @@
             <list string="Offers">
                 <field name="price" />
                 <field name="partner_id" string="Partner" />
+                <field name="validity" string="Validity (days)" />
+                <field name="date_deadline" />
                 <field name="status" />
             </list>
         </field>
@@ -20,6 +22,8 @@
                     <group>
                         <field name="price" />
                         <field name="partner_id" string="Partener" />
+                        <field name="validity" string="Validity (days)" />
+                        <field name="date_deadline" />
                         <field name="status" />
                     </group>
                 </sheet>

estate/views/estate_property_views.xml

@@ -18,6 +18,7 @@
                         <group>
                             <field name="expected_price" />
                             <field name="selling_price" />
+                            <field name="best_price"/>
                         </group>
                     </group>
                     <notebook>
@@ -32,6 +33,7 @@
                                 <field name="garden_area" string="Garden Area (sqm)" />
                                 <field name="garden_orientation" />
                                 <field name="state" />
+                                <field name="total_area"/>
                             </group>
                         </page>
                         <page string="Offers">