Class Based View

< h1> Class based Views < h2>List View Class based generic views.py
Goto todo app --> view.py

from django.views.generic import ListView

class TaskListview(ListView):
    model = Task
    template_name = 'home.html'
    context_object_name = 'task'

Goto todo app  urls.py

from . import views
from django.urls import path, include

urlpatterns = [
    path('', views.note, name='note'),
    path('delete/<int:taskid>/', views.delete, name='delete'),
    path('update/<int:id>/', views.update, name='update'),
    path('cbvhome/', views.TaskListview.as_view(), name='cbvhome'),
]

< h2>Detail view Class based generic views.py
1. Goto todo app  view.py

from django.views.generic.detail import DetailView


# Class Based DetailView
class TaskDetailview(DetailView):
    model = Task
    template_name = 'details.html'
    context_object_name = 'i'

2. Goto todo app  urls.py

path('cbvdetail/<int:pk>/', views.TaskDetailview.as_view(), name='cbvdetail')

important pk (primary key)

3. go to temlapte  details.htnl

{% extends 'base.html' %}
{% block content %}
    <div class="card border-warning mb-6 shadow" style="max-width: 35rem;">
      <div class="card-header">{{i.date}}</div>
      <div class="card-body">
        <h5 class="card-title">{{i.name}}.</h5>
        <p class="card-text">{{i.priority}}.</p>
        <a class="btn btn-danger" href="{% url 'delete' i.id %}">Done</a>
        <a class="btn btn-warning" href="{% url 'update' i.id %}">Update</a>
      </div>
    </div><br>
{% endblock %}

4. To access the must be enter the id on link, eg: Title http://127.0.0.1:8000/cbvdetail/69/ < h2>Update View Class based generic views.py
1. Goto todo app  view.py

from django.views.generic.edit import UpdateView

# Class update views
class TaskUpdateview(UpdateView):
    model = Task
    template_name = 'update.html'
    context_object_name = 'task'
    fields = ('name', 'priority', 'date')
    def get_success_url(self):
        return reverse_lazy('cbvdetail', kwargs={'pk':self.object.id})

2. Go to todoapp  urls.py

path('cbvupdate/<int:pk>/', views.TaskUpdateview.as_view(), name='cbvupdate')

3. Goto Templates  updates.html

{% extends 'base.html' %}
{% block content %}
<div class="col-6">
        <!--Card contents start-->
        <div class="card border-warning mb-6 shadow" style="max-width: 35rem;">
          <div class="card-header">Task Update</div>
          <div class="card-body">
                <form method="POST">
                {% csrf_token %}
                <p>{{form.as_p}}</p>
                <input type="submit" class="btn btn-success">
                </form>
          </div>
        </div>
        <!--Card contents end-->
</div>
{% endblock %}

4. Link for Title http://127.0.0.1:8000/cbvupdate/69/e < h2>Delete View 1. Goto todo app  view.py

from django.views.generic.edit import UpdateView, DeleteView


# Delete views
class TaskDeleteView(DeleteView):
    model = Task
    template_name = 'delete.html'
    success_url = reverse_lazy('cbvhome')

2. Goto todo app  urls..py

path('cbvdelete/<int:pk>/', views.TaskDeleteview.as_view(), name='cbvdelete')

3. Delete page same as the previos delet.html

{% extends 'base.html' %}
{% block content %}
<form method="POST">
    {% csrf_token %}
    <p>Are you sure this task is Done?</p>
    <input type="submit" class="btn btn-success">
</form>
{% endblock %}

4. Ling for delete: Title http://127.0.0.1:8000/cbvdelete/69/