[IMP] estate: added buttons to manage state of property and offers

User can now click a Sold or Cancel button to change a property’s status
instantly. The system also protects your data by making sure a house that is
already sold cannot be canceled, and a canceled house cannot be sold.
Additionally, individual offers now have Accept and Refuse buttons. When
you accept an offer, the system automatically fills in the buyer's name and the
final price on the main page, ensuring that only one offer can be finalized for
a property.

These buttons make user's work faster because the system does the typing for
user, user don't have to copy and paste the buyer's name or the price. The
rules keep records correct by making sure user don't click the wrong button
by accident.

Author: patsh-odoo

estate/models/estate_property.py

@@ -1,4 +1,5 @@
 from odoo import models, fields, api
+from odoo.exceptions import UserError
 
 
 class Estate(models.Model):
@@ -79,3 +80,17 @@ def _onchange_garden(self):
         else:
             self.garden_orientation = False
             self.garden_area = False
+
+    def mark_property_sold(self):
+        for record in self:
+            if record.state == "cancelled":
+                raise UserError("cancelled property can't be sold")
+            record.state = "sold"
+            return True
+
+    def mark_property_cancelled(self):
+        for record in self:
+            if record.state == "sold":
+                raise UserError("sold property can't be canceled")
+            record.state = "cancelled"
+            return True

estate/models/estate_property_offer.py

@@ -1,4 +1,5 @@
 from odoo import models, fields, api
+from odoo.exceptions import UserError
 
 
 class EstatePropertyOffer(models.Model):
@@ -46,3 +47,19 @@ def _inverse_date_deadline(self):
                         else fields.Date.context_today(record)
                     )
                 ).days
+
+    def accept_offer(self):
+        for record in self:
+            for offer in record.property_id.offer_ids:
+                if offer.status == "accepted":
+                    raise UserError("offer is already accepted for the property")
+            record.status = "accepted"
+            record.property_id.buyer_id = record.partner_id
+            record.property_id.selling_price = record.price
+
+    def refuse_offer(self):
+        for record in self:
+            if record.status == "accepted":
+                record.property_id.buyer_id = False
+                record.property_id.selling_price = False
+            record.status = "refused"

estate/views/estate_property_offer_views.xml

@@ -8,6 +8,8 @@
                 <field name="partner_id"/>
                 <field name="validity"/>
                 <field name="date_deadline"/>
+                <button name="accept_offer" title="accept" type="object" icon="fa-check"/>
+                <button name="refuse_offer" title="refuse" type="object" icon="fa-times"/>
                 <field name="status"/>
             </list>
         </field>

estate/views/estate_property_views.xml

@@ -10,13 +10,13 @@
         <field name="model">estate_property</field>
         <field name="arch" type="xml">
             <list>
-                 <field name="name" string="Title"/>
-                 <field name="postcode"/>
-                 <field name="bedrooms"/>
-                 <field name="living_area" string="Living Area (sqm)"/>
-                 <field name="expected_price"/>
-                 <field name="selling_price"/>
-                 <field name="date_available" string="Available From"/>
+                <field name="name" string="Title"/>
+                <field name="postcode"/>
+                <field name="bedrooms"/>
+                <field name="living_area" string="Living Area (sqm)"/>
+                <field name="expected_price"/>
+                <field name="selling_price"/>
+                <field name="date_available" string="Available From"/>
             </list>
         </field>
     </record>
@@ -26,6 +26,10 @@
         <field name="model">estate_property</field>
         <field name="arch" type="xml">
             <form>
+                <header>
+                    <button name="mark_property_sold" type="object" string="Sold" class="btn-link"/>
+                    <button name="mark_property_cancelled" type="object" string="Cancelled" class="btn-link"/>
+                </header>
                 <sheet>
                     <div class="oe_title">
                         <h1>
@@ -35,6 +39,7 @@
                     <group>
                         <field name="property_tag_ids" widget="many2many_tags"/>
                         <group>
+                            <field name="state" string="Status"/>
                             <field name="property_type_id"/>
                             <field name="postcode"/>
                             <field name="date_available" string="Available from"/>
@@ -58,8 +63,17 @@
                                 <field name="garden_orientation"/>
                                 <field name="total_area" string="Total Area (sqm)"/>
                             </group>
-                         </page>
-                     </notebook>
+                        </page>
+                        <page string="Offers">
+                            <field name="offer_ids"/>
+                        </page>
+                        <page string="Other info">
+                            <group>
+                                <field name="buyer_id"/>
+                                <field name="salesman_id"/>
+                            </group>
+                        </page>
+                    </notebook>
                 </sheet>
             </form>
         </field>
@@ -86,4 +100,3 @@
         </field>
     </record>
 </odoo>
-