[FIX] Room capacity can't be less than one

hotel/models/hotel_reservation.py

@@ -1165,11 +1165,8 @@ class HotelReservation(models.Model):
         return {'total_price': total_price, 'commands': cmds}
 
     @api.constrains('adults')
-    def check_adults(self):
-        if self.adults == 0 and self.room_id:
-            # room = self.env['hotel.room'].search([
-            #     ('product_id', '=', self.product_id.id)
-            # ], limit=1)
+    def _check_adults(self):
+        if self.adults == 0 and self.room_id and self.room_id > 0:
             self.adults = self.room_id.capacity
 
     @api.multi

hotel/models/hotel_room.py

@@ -3,7 +3,7 @@
 # Copyright 2017  Dario Lodeiros
 # License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).
 from odoo import models, fields, api, _
-
+from odoo.exceptions import ValidationError
 
 class HotelRoom(models.Model):
     """ The rooms for lodging can be for sleeping, usually called rooms, and also
@@ -45,3 +45,8 @@ class HotelRoom(models.Model):
         help="A description of the Product that you want to communicate to "
              " your customers. This description will be copied to every Sales "
              " Order, Delivery Order and Customer Invoice/Credit Note")
+
+    @api.constrains('capacity')
+    def _check_capacity(self):
+        if self.capacity < 1:
+            raise ValidationError(_("Room capacity can't be less than one"))