Дата и имя файла не отображаются при обновлении данных в Django

Я пробовал некоторые шаблоны, предложенные некоторыми пользователями Stackoverflow. Они выглядят так: date:'jS M Y' & date:'c' Но в моем случае они не работают.

Также смотрите эту статью : django update view not showing date input (previous) values

1. Models.py

from tkinter import CASCADE
from django.db import models
from django.utils import timezone
from django.contrib.auth.models import User

# Create your models here.

class Ticket2(models.Model):
    ticketholder = models.ForeignKey(User, on_delete=models.CASCADE, default=None)
    ticket_id = models.CharField(max_length=8, default='NS000001')
    server_details = models.CharField(max_length=100)
    send_date = models.DateTimeField(default=timezone.now)
    license_no = models.CharField(max_length=25)
    file = models.FileField(upload_to='documents/%Y%m%d/')

    def __str__(self):
        return self.ticket_id

2. edit.html

{% extends 'base.html' %}
{% block content %}

<h3 class="row justify-content-around">Edit Form</h3>

<div class="row justify-content-around" class="modal-body">
<form method="post" enctype="multipart/form-data">
    {% csrf_token %}
    <div class="form-group">
        <label for="exampleInputEmail1">Ticket ID</label>
        <input type="text" value="{{ticketdata.ticket_id}}" name="ticket_id" class="form-control" id="exampleInputEmail1" aria-describedby="emailHelp" required>
    </div>
    <div class="form-group">
        <label for="exampleInputPassword1">Server Details</label>
        <input type="text" value="{{ticketdata.server_details}}" name="server_details" class="form-control" id="exampleInputPassword1" required>
    </div>
    <div class="form-group">
        <label for="exampleInputPassword1">Send Date</label>
        <input type="datetime-local" value="{{ ticketdata.send_date.value|date:'jS M Y' }}" name="send_date" class="form-control" id="exampleInputPassword1" required>
    </div>
    <div class="form-group">
        <label for="exampleInputPassword1">License No</label>
        <input type="text" value="{{ticketdata.license_no}}" name="license_no" class="form-control" id="exampleInputPassword1" required>
    </div>
    <div class="form-group">
        <label for="exampleInputPassword1">Files</label>
        <input type="file" value="{{ticketdata.file}}" name="file" class="form-control" id="exampleInputPassword1" required>
    </div>
    <div class="modal-footer">
        <button type="submit" class="btn btn-primary">Submit</button>
        <button type="button" class="btn btn-secondary" data-dismiss="modal">Close</button>
    </div>
</form>
</div>
{% endblock %}

3. views.py

from django.shortcuts import render, redirect
from .models import Ticket2
from tmsapp.forms import SaveTicket
from django.contrib import messages
from django.contrib.auth.decorators import login_required

# Create your views here.

@login_required
def Index(request):
    ticketdata = Ticket2.objects.filter(ticketholder = request.user)
    if request.method == "POST":
        form = SaveTicket(request.POST,request.FILES or None) 
        if form.is_valid():
            form.save(commit=False).ticketholder = request.user
            form.save()
            messages.success(request,("Data has been added successfully !!"))
            print(form)
            return redirect('index')
    else:
        form = SaveTicket()
    return render(request, 'index.html', {'ticketdata':ticketdata})

@login_required
def Delete(request, id):
    ticketdata = Ticket2.objects.get(pk=id)
    ticketdata.delete()
    messages.success(request,("Data has been deleted successfully !!"))
    return redirect('index')

@login_required
def Edit(request, id):
    if request.method == "POST":
        ticketdata = Ticket2.objects.get(pk=id)
        form = SaveTicket(request.POST,request.FILES or None, instance=ticketdata)
        if form.is_valid():
            form.save()
            messages.success(request,("Data has been updated successfully !!"))
            print(form)
        return redirect('index')
    else:
        ticketdata = Ticket2.objects.get(pk=id)
        print(ticketdata.file)
        return render(request, 'edit.html', {'ticketdata':ticketdata})

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