some first models of pos & add required to attributes

apps/authentication/websocket/consumer.py

@@ -24,7 +24,42 @@ class MyConsumer(AsyncWebsocketConsumer):
         unit = await get_unit(int(message))
         print("Received:", message)
 
-        # پاسخ به کلاینت
         await self.send(text_data=json.dumps({
-            "message": unit
+            "message": unit.unit
         }))
+
+
+class SendFromServerConsumer(AsyncWebsocketConsumer):
+    async def connect(self):
+        self.group_name = 'mojtaba_group'  # noqa
+        await self.channel_layer.group_add(
+            self.group_name,
+            self.channel_name
+        )
+        await self.accept()
+        await self.send(text_data=json.dumps({"message": "Connected!"}))
+
+    async def disconnect(self, code):
+        await self.channel_layer.group_discard(
+            self.group_name,
+            self.channel_name
+        )
+
+    async def receive(self, text_data=None, bytes_data=None):
+        data = json.loads(text_data)
+        msg = data.get("message", "")
+
+        await self.channel_layer.group_send(
+            self.group_name,
+            {
+                "type": "chat.message",
+                "message": msg
+            }
+        )
+
+    async def chat_message(self, event):
+        message = event['message']
+        await self.send(text_data=json.dumps({
+            "message": message
+        }))
+