# import the standard Django Model
# from built-in library
from django.db import models
  
# declare a new model with a name "GeeksModel"
class GeeksModel(models.Model):
 
    # fields of the model
    title = models.CharField(max_length = 200)
    description = models.TextField()
 
    # renames the instances of the model
    # with their title name
    def __str__(self):
        return self.title

Python manage.py makemigrations
Python manage.py migrate

Python manage.py shell

>>> from geeks.models import GeeksModel
>>> GeeksModel.objects.create(
                       title="title1",
                       description="description1").save()
>>> GeeksModel.objects.create(
                       title="title2",
                       description="description2").save()
>>> GeeksModel.objects.create(
                       title="title2",
                       description="description2").save()

from django import forms
from .models import GeeksModel
 
 
# creating a form
class GeeksForm(forms.ModelForm):
 
    # create meta class
    class Meta:
        # specify model to be used
        model = GeeksModel
 
        # specify fields to be used
        fields = [
            "title",
            "description"]

from django.urls import path
 
# importing views from views..py
from .views import update_view, detail_view
 
urlpatterns = [
    path('<id>/', detail_view ),
    path('<id>/update', update_view ),
]

from django.shortcuts import (get_object_or_404,
                              render,
                              HttpResponseRedirect)
 
# relative import of forms
from .models import GeeksModel
from .forms import GeeksForm
 
# after updating it will redirect to detail_View
def detail_view(request, id):
    # dictionary for initial data with
    # field names as keys
    context ={}
  
    # add the dictionary during initialization
    context["data"] = GeeksModel.objects.get(id = id)
          
    return render(request, "detail_view.html", context)
 
# update view for details
def update_view(request, id):
    # dictionary for initial data with
    # field names as keys
    context ={}
 
    # fetch the object related to passed id
    obj = get_object_or_404(GeeksModel, id = id)
 
    # pass the object as instance in form
    form = GeeksForm(request.POST or None, instance = obj)
 
    # save the data from the form and
    # redirect to detail_view
    if form.is_valid():
        form.save()
        return HttpResponseRedirect("/"+id)
 
    # add form dictionary to context
    context["form"] = form
 
    return render(request, "update_view.html", context)

<div class="main">
    <!-- Create a Form -->
    <form method="POST">
        <!-- Security token by Django -->
        {% csrf_token %}
 
        <!-- form as paragraph -->
        {{ form.as_p }}
 
        <input type="submit" value="Update">
    </form>
 
</div>

<div class="main">
    <!-- Display attributes of instance -->
    {{ data.title }} <br/>
    {{ data.description }}
</div>