[IMP] estate: define actions & buttons

Added 'Cancel' and 'Sold' buttons to the estate.property model.
A sold property cannot be cancelled, and a cancelled property cannot be marked
as sold.
Used Odoo Exceptions to show error messages for invalid actions.

Author: habar-odoo

estate/models/estate_property.py

@@ -1,6 +1,7 @@
 from dateutil.relativedelta import relativedelta
 
 from odoo import api, fields, models
+from odoo.exceptions import UserError
 
 
 class EstateProperty(models.Model):
@@ -74,3 +75,17 @@ def _onchange_garden(self):
         else:
             self.garden_area = 0
             self.garden_orientation = False
+
+    def set_property_cancelled(self):
+        for rec in self:
+            if rec.state == 'cancelled':
+                raise UserError("Sold property can not be cancelled.")
+            rec.state = 'cancelled'
+        return True
+
+    def set_property_sold(self):
+        for rec in self:
+            if rec.state == 'cancelled':
+                raise UserError("Cancelled properties can not be sold.")
+            rec.state = 'sold'
+        return True

estate/views/estate_property_views.xml

@@ -5,11 +5,16 @@
         <field name="model">estate.property</field>
         <field name="arch" type="xml">
             <form string="Properties">
+                <header>
+                    <button name="set_property_sold" type="object">Sold</button>
+                    <button name="set_property_cancelled" type="object">Cancel</button>
+                </header>
                 <sheet>
                     <h1><field name="name"/></h1>
                     <h4><field name='property_tag_ids' widget='many2many_tags'/></h4>
                     <group>
                         <group>
+                            <field name="state" string="Status"/>
                             <field name='property_type_id'/>
                             <field name="postcode"/>
                             <field name="date_availability"/>
@@ -81,7 +86,7 @@
                 <field name='date_availability'/>
                 <field name='total_area'/>
                 <field name='best_price'/>
-                <filter string="Available" name="avilable" domain="[('state','in',['new','offer_received'])]"/>
+                <filter string="Available" name="available" domain="[('state','in',['new','offer_received'])]"/>
                 <filter string="Postcode" name="group_by_postcode" context="{'group_by':'postcode'}"/>
             </search>
         </field>