Samsoe

What are class-based views anyway?

Django's class-based generic views provide abstract classes implementing common web development tasks. These are very powerful, and heavily-utilise Python's object orientation and multiple inheritance in order to be extensible. This means they're more than just a couple of generic shortcuts — they provide utilities which can be mixed into the much more complex views that you write yourself.

Sumber = Django Official , CCBV

> Buat Enviroment Nya Terlebih Dahulu, Dan Install Django

> Buat Project Nya Dan Masuk Ke Directori

$ django-admin startproject main

$ cd main

> Buat Apps Pada Project

$ python manage.py startapp crud

#Tambahkan Pada Halaman Settings, main/main/settings.py

INSTALLED_APPS = [
    ......
    'crud',
    ......
]

TEMPLATES = [
    {
        .....
        'DIRS': ['views']
        .....
    }
]

> Buat Models Untuk Data Crud, main/crud/models.py

models.py*

from django.db import models

class DataCrud(models.Model):
	nama = models.CharField(max_length=200)
	umur = models.IntegerField()
	created_at = models.DateTimeField(auto_now_add=True)

> Migrations Models

$ python manage.py makemigrations

$ python manage.py migrate

> Buat Direktori Views Di Dalam Folder Project Dan File HTML

# Simpan File HTML, main/views/

main 
   |__ crud
   |__ main 
   |__ views
           |__ create.html   
           |__ delete.html 
           |__ list.html 
           |__ update.html

> Pada File views.py, main/crud/views.py

views.py*

from django.shortcuts import render
from django.views.generic import (
	ListView,
	CreateView,
	UpdateView,
	DeleteView
	)

from crud.models import DataCrud


class ListMain(ListView):
	template_name = 'list.html'
	model = DataCrud


class CreateMain(CreateView):
	template_name = 'create.html'
	model = DataCrud
	fields = ['nama','umur']
	success_url = '/'

class UpdateMain(UpdateView):
	template_name = 'update.html'
	model = DataCrud
	fields = ['nama','umur']
	success_url = '/'

class DeleteMain(DeleteView):
	template_name = 'delete.html'
	model = DataCrud
	success_url = '/'

template_name = Memberitahu Class, halaman yang html yang di gunakan
model = Memberitahu, Data atau Models mana yang kita gunakan
success_url = Digunakan Saat Proses Berjalan Dan Sukses Akan Di Redirect Kehalaman Utama atau /

> Pada File urls.py Di Folder crud, Buat Jika Belum Ada, main/crud/urls.py

urls.py*

from django.urls import path
from crud.views import (
    ListMain,
    CreateMain,
    UpdateMain,
    DeleteMain,
    )

urlpatterns = [
    path('',ListMain.as_view()),
    path('create',CreateMain.as_view()),
    path('update/<int:pk>',UpdateMain.as_view()),
    path('delete/<int:pk>',DeleteMain.as_view()),
]

> Pada File urls.py Di Folder main, main/main/urls.py

urls.py*

from django.contrib import admin
from django.urls import path,include

urlpatterns = [
    path('admin/', admin.site.urls),
    path('',include('crud.urls')),
]

> Pada File HTML Di Folder Views, main/views/*html

list.html*

<!DOCTYPE html>
<html>
<head>
	<meta charset="utf-8">
	<meta name="viewport" content="width=device-width, initial-scale=1">
	<title></title>
	<style>
	table {
	  font-family: arial, sans-serif;
	  border-collapse: collapse;
	  width: 100%;
	}

	td, th {
	  border: 1px solid #dddddd;
	  text-align: left;
	  padding: 8px;
	}

	tr:nth-child(even) {
	  background-color: #dddddd;
	}
	</style>
</head>
<body>

<a href="/create">Tambah Data</a>

<table>
  <tr>
    <th>Nama</th>
    <th>Umur</th>
    <th>Update</th>
    <th>Delete</th>
  </tr>
  {% for obj in object_list %}
  <tr>
    <td>{{obj.nama}}</td>
    <td>{{obj.umur}}</td>
    <td><a href="/update/{{obj.id}}">Update</a></td>
    <td><a href="/delete/{{obj.id}}">Delete</a></td>
  </tr>
  {% endfor %}
</table>


</body>
</html>

create.html*

<!DOCTYPE html>
<html>
<head>
	<meta charset="utf-8">
	<meta name="viewport" content="width=device-width, initial-scale=1">
	<title></title>
</head>
<body>


<form method="POST">
{% csrf_token %}	

{{form}}

<input type="submit" name="Create">
</form>


</body>
</html>

update.html*

<!DOCTYPE html>
<html>
<head>
	<meta charset="utf-8">
	<meta name="viewport" content="width=device-width, initial-scale=1">
	<title></title>
</head>
<body>

<form method="POST">
{% csrf_token %}	

{{form}}

<input type="submit" name="Update">
</form>	

</body>
</html>

delete.html*

<!DOCTYPE html>
<html>
<head>
	<meta charset="utf-8">
	<meta name="viewport" content="width=device-width, initial-scale=1">
	<title></title>
</head>
<body>


<h2>Apakah Anda Yakin Ingin Menghapus <b>{{object.nama}}</b></h2>
<form method="POST">
{% csrf_token %}	
<button type="submit">Yes</button>
</form>
<a href ="/"><button>Cancel</button></a>
</body>
</html>

> Jalankan Server

$ python manage.py runserver

Done..... Try It

Sumber Materi