[Django]-Get image full url on Django Channel Response

The Django Channels says that scope in Consumers is similar to request in Views.
Correct; therefore it depends how to setup your events in the AsyncConsumer.
If you could share more about your code or a better explanation with a dummy example.

In general:
Import the serializers in the consumers and then send the same data to the serializers as shown below.

from <app_name>.serializers import <desired_serializer_name>Serializer
from channels.db import database_sync_to_async

@database_sync_to_async
def serializer_checking_saving_data(self, data):
    serializer = <desired_serializer_name>Serializer(data=data)
    serializer.is_valid(raise_exception=True)
    x = serializer.create(serializer.validated_data)#this will create the value in the DB
    return <desired_serializer_name>Serializer(x).data

To fetch data from a websocket request:
Setup a receive event (ie channel-layer will receive the data) wherein it would trigger a particular event[for example I will implement to simply display that data]

#write this inside the AsyncWebsocketConsumer
async def receive_json(self, content, **kwargs):
    """[summary]
    • All the events received to the server will be evaluated here.
    • If websocket has event-type based on these the receive function will execute
        the respective function
    """
    message_type = content.get('type')
    if message_type == 'start.sepsis':
        await self.display_the_data(content)
    

async def display_the_data(self,data)
    message = data.get('payload')
    print(f"The data sent to the channel/socket is \n {data}")

You can make the websocket request in the following way:-
create a new python file

import json
import websocket
import asyncio
async def making_websocket_request():
    ws_pat = websocket.WebSocket()
    ws_pat.connect(
        'ws://localhost:8000/<ws-router-url>/')
    asyncio.sleep(2)#it might take a couple of seconds to connect to the server
   ws.send(json.dumps({
       'type':'display.the_data'
       #the channels will convert "display.the_data" to "display_the_data"
       #since "display_the_data" their is an event as defined above it would be called
       'payload':{<can-be-any-json-data>}
       #this payload will be sent as a parameter when calling the function.
   }))