How can I show a loading animation in Django while the server is processing a view?

So I'm currently working on a Django project that has a view that takes quite a bit of time to load and it can be rather user unfriendly to keep the user wondering what's wrong with the website until the page loads.

My website works in way such that the user would have a url such as:

http://www.example.com/Name/JohnRichards

Saved to their bookmarks. Upon visiting the above URL the server should display a loading message (probably with a GIF and AJAX or JS) of a loading screen until the server finishes loading data and then display it.

Note: Just in case it matters, when he user goes to the above mentioned link, they won't be redirected there, rather, this would be their entry point since it's a url that they have saved in their bookmarks

What I thought would work is returning some sort of a loading template of sorts as soon as somebody visits the page, and then after the data processing has finished, I would return the final response. But I can't have two returns in a function.

The following is my urls.py file:

from django.contrib import admin
from django.urls import path
from myapp import views

urlpatterns = [
    path('', views.index, name='index'),
    path('Name/'+'<str:Name>', views.NameInLink, name='NameInLink'),
]

And the following is my views.py file

from django.shortcuts import render
from django.http import HttpResponse
from django.http import HttpResponseRedirect
from .forms import NameForm
from . import DataProcessor
import time

def NameInLink(request, Name):
    UserData = DataProcessor.process(Name)
    return render(request, "UserData.html", {"UserData": UserData})

How could I add a loading screen of sorts between user using visiting the URL and the data processing finishing?