[IMP] estate: implement property offer validation and enhance user model with property relationship

Author: Sylsee

estate/__manifest__.py

@@ -15,5 +15,6 @@
         'views/estate_property_type_views.xml',
         'views/estate_property_tag_views.xml',
         'views/estate_menus.xml',
+        'views/res_users.xml',
     ],
 }

estate/models/__init__.py

@@ -3,4 +3,5 @@
     estate_property_type,
     estate_property_tag,
     estate_property_offer,
+    res_users,
 )

estate/models/estate_property.py

@@ -103,6 +103,14 @@ def _check_selling_price(self):
                     'Selling cannot be less than 90% of the expected price.'
                 )
 
+    @api.ondelete(at_uninstall=False)
+    def delete(self):
+        for property in self:
+            if property.state not in ('new', 'canceled'):
+                raise UserError(
+                    'Only properties in New or Canceled state can be deleted.'
+                )
+
     def action_set_property_as_sold(self):
         for property in self:
             if property.state == 'canceled':

estate/models/estate_property_offer.py

@@ -46,6 +46,21 @@ def _inverse_date_deadline(self):
                 offer.date_deadline - (offer.create_date.date() or fields.Date.today())
             ).days
 
+    @api.model
+    def create(self, offers_list):
+        for offer in offers_list:
+            linked_property = self.env['estate.property'].browse(offer['property_id'])
+
+            lowest_price = min(linked_property.offer_ids.mapped('price'), default=0.0)
+            if offer['price'] < lowest_price:
+                raise UserError(
+                    'You cannot create an offer with a lower amount than a existing one.'
+                )
+
+            if linked_property.state == 'new':
+                linked_property.state = 'offer_received'
+        return super().create(offers_list)
+
     def action_accept(self):
         for offer in self:
             other_offers = offer.property_id.offer_ids - offer

estate/models/res_users.py

@@ -0,0 +1,9 @@
+from odoo import fields, models
+
+
+class ResUsers(models.Model):
+    _inherit = 'res.users'
+
+    property_ids = fields.One2many(
+        'estate.property', 'salesperson_id', string='Real Estate Properties'
+    )

estate/views/res_users.xml

@@ -0,0 +1,15 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<odoo>
+  <record id="res_users_view_form" model="ir.ui.view">
+    <field name="name">res.users.view.form.inherit.estate</field>
+    <field name="model">res.users</field>
+    <field name="inherit_id" ref="base.view_users_form" />
+    <field name="arch" type="xml">
+      <notebook position="inside">
+        <page string="Real Estate Properties">
+          <field name="property_ids" />
+        </page>
+      </notebook>
+    </field>
+  </record>
+</odoo>