add print button kitchen

sale.py

@@ -1,7 +1,10 @@
 from trytond.pool import Pool, PoolMeta
 from trytond.model import ModelView, fields
+from trytond.transaction import Transaction
 from trytond.exceptions import UserError
 
+import requests
+import json
 
 class Sale(metaclass=PoolMeta):
     "Sale Fast Food"
@@ -14,6 +17,8 @@ class Sale(metaclass=PoolMeta):
         super(Sale, cls).__setup__()
         cls._buttons.update({
             'add_pizza': {},
+            'kitchen': {},
+            'bar': {}
         })
 
     @classmethod
@@ -26,13 +31,30 @@ class Sale(metaclass=PoolMeta):
         pool = Pool()
         saleLine = pool.get('sale.line')
         for record in records:
-            #raise UserError(str(record.lines))
             record.pizza_number +=1
             record.lines += (saleLine(type="title",
-                                           description="Pizza Combinada"),)
+                                      description="Pizza Combinada"),)
             record.save()
-
             
+    @classmethod
+    @ModelView.button
+    #@ModelView.button_action('sale_fast_food.report_customer_order')
+    def kitchen(cls, records):
+        pool = Pool()
+        Report = pool.get('sale.customer_order', type='report')
+        context = Transaction().context
+        #customer_order = Report.execute(records, context)
+        data = {"content": "Esto es una pruebas"}
+        url = "http://localhost:5000/print_ticket"
+        response = requests.post(url, json=json.dumps(data), headers={'Content-Type': 'application/json'})
+        #response = requests.post(url, json={"content": customer_order[1]})
+
+        raise UserError(str(response))
+        if response.status_code == 200:
+            message = response.Text
+            raise UserError(str(message))
+        
+    
 class Line(metaclass=PoolMeta):
     "Sale Line Fast Food"
     __name__ = 'sale.line'