Django

order and unorder list   Views.py
from datetime import date
from django.http import HttpResponse
from django.shortcuts import render
from django.template import Context, Template
# Create your views here.
def showlist(request):
fruits=["Mango","Apple","Bananan","Jackfruits"]
student_names=["Tony","Mony","Sony","Bob"]
return
render(request,'showlist.html',{"fruits":fruits,"student_names":student_names}
)
URLS.py
from django.contrib import admin
from django.urls import path, re_path
from ap1.views import check_number, current_date_time
from ap1.views import four_hours_after, four_hours_before
from ap1.views import n_hours_after,display_string
from ap2.views import create_table_of_squares,vc,find_mode
from ap2.views import template_test,showlist
urlpatterns = [
path('admin/', admin.site.urls),
path('cdt/', current_date_time),
path('fha/', four_hours_after),
7 | P a g e

path('fhb/', four_hours_before),
path('nha/<int:num>', n_hours_after),
path('display_string/<slug:sentence>', display_string),
re_path('check_number/(\d){1,2}/',check_number),
path('cts/<int:s>/<int:n>', create_table_of_squares),
path('vc/<str:sentence>', vc),
path('find_mode/<str:listofnum>', find_mode),
path('template_test/', template_test),
path('showlist/', showlist),
]
Template HTML file (inside ap2/templates subfolder)
showlist.html
<html>
<style type="text/css">
#i1 {background-color: lightgreen;color:brown;display:table}
#i2 {background-color: black;color:yellow}
</style>
<body>
<h1 id="i1">Unordered list of fruits</h1>
<ul>
{% for fruit in fruits %}
<li>{{ fruit }}</li>
{% endfor %}
</ul>
<h1 id="i2">Ordered list of Students</h1>
<ol>
{% for student in student_names %}
<li>{{ student }}</li>
{% endfor %}
</ol>
</body>
</html>


2)


layout   Create basetemp directory under Django project directory  name about
Create layout.html
</head>
<body>
    <header>
        <nav>
            <ul>
                <li><a href="/home/">Home</a></li>
                <li><a href="/abot/">About Us</a></li>
                <li><a href="/contact/">Contact Us</a></li>
                <!-- Add more navigation links as needed -->
            </ul>
        </nav>
    </header>

    <main>
        {% block content %}
        {% endblock %}
    </main>

    <footer>
        <p>&copy; {% now "Y" %} Your Website. All rights reserved.</p>
        <p>Developed by Your Name</p>
    </footer>
</body>
</html>

Create abt.html
{% extends 'layout.html' %}

{% block title %}About Us - Your Website{% endblock %}

{% block content %}
    <h1>About Us</h1>
    <!-- Add about us content here -->
{% endblock %}
Create contact.html
{% extends 'layout.html' %}

{% block title %}Contact Us - Your Website{% endblock %}

{% block content %}
    <h1>Contact Us</h1>
    <!-- Add contact us content here -->
{% endblock %}

Create home.html
{% extends 'layout.html' %}

{% block title %}Home - Your Website{% endblock %}

{% block content %}
    <h1>Welcome to Our Website!</h1>
    <!-- Add home page content here -->
{% endblock %}
Under project about ->create views.py
from django.shortcuts import render

def home(request):
    return render(request, 'home.html')

def abot(request):
    return render(request, 'abt.html')

def contact(request):
    return render(request, 'contact.html')

under project about->urls.py
from django.urls import path
from . import views

urlpatterns = [
    path('', views.home, name='home'),
    path('abot/', views.abot, name='abot'),
    path('contact/', views.contact, name='contact'),
    # Add more URL patterns as needed
]
Create path in setting.py->Templates part path set is
DIRS': [BASE_DIR,"basetemp"],


3)


current date time     In project mysite->urls.py

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

urlpatterns = [
    path('admin/', admin.site.urls),
    path('', include('first.urls')),
]
 from django.urls import path
from . import views

urlpatterns = [
path('current_datetime/', views.current_datetime_view, name='current_datetime')  first app ->views.py

from django.http import HttpResponse
from datetime import datetime,timedelta   def current_datetime_view(request):
    # Get the current date and time
    now = datetime.now()

    # Return the current date and time as plain text
    return HttpResponse(f"Current Date and Time: {now}")


4)


current date time offset     In project mysite->urls.py

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

urlpatterns = [
    path('admin/', admin.site.urls),
    path('', include('first.urls')),
]
First app->urls.py
from django.urls import path
from . import views

urlpatterns = [
path('datetime_with_offsets/', views.datetime_with_offsets,name='datetime_with_offsets')    first app ->views.py

from django.http import HttpResponse
from datetime import datetime,timedelta

def datetime_with_offsets(request):
 now = datetime.now()
 offset_hours = 4
 # Calculate dates with offsets
 four_hours_ahead = now + timedelta(hours=offset_hours)
 four_hours_before = now - timedelta(hours=offset_hours)
 html = f"<html><body><h1>Current Date and Time with Offsets:</h1>" \
 f"<p>Current: {now}</p>" \
 f"<p>Four Hours Ahead: {four_hours_ahead}</p>" \
 f"<p>Four Hours Before: {four_hours_before}</p></body></html>"
 return HttpResponse(html)


5)


1: Pip install virtualenv(global installation)
start virtual env

2:python -m virtualenv env
activate virtual env
cd env\scrpts\activate
C:\>cd env

C:\env>cd scripts

C:\env\Scripts>activate

(env) C:\env\Scripts>cd..

(env) C:\env>cd..

(env) C:\>pip install Django
4:python>>import Django
check Django version
Django.__version


(env) C:\>python -m django --version
5.0.4


(env) C:\>django-admin startproject mysite

(env) C:\>cd mysite

(env) C:\mysite>python manage.py runserver
open browse see output
*************************************************

C:\>mkdir django

C:\>cd django

C:\django>pip install virtualenv


C:\django>python -m virtualenv env
created virtual environment CPython3.12.1.final.0-64 in 802ms
  creator CPython3Windows(dest=C:\django\env, clear=False, no_vcs_ignore=False, global=False)
  seeder FromAppData(download=False, pip=bundle, via=copy, app_data_dir=C:\Users\Lenovo\AppData\Local\pypa\virtualenv)
    added seed packages: pip==24.0
  activators BashActivator,BatchActivator,FishActivator,NushellActivator,PowerShellActivator,PythonActivator

C:\django>cd env

C:\django\env>cd scripts

C:\django\env\Scripts>activate

(env) C:\django\env\Scripts>cd..


(env) C:\django>pip install Django

(env) C:\django>python -m django --version
5.0.4

(env) C:\django>django-admin

Type 'django-admin help <subcommand>' for help on a specific subcommand.

Available subcommands:

[django]
    check
    compilemessages
    createcachetable
    dbshell
    diffsettings
    dumpdata
    flush
    inspectdb
    loaddata
    makemessages
    makemigrations
    migrate
    optimizemigration
    runserver
    sendtestemail
    shell
    showmigrations
    sqlflush
    sqlmigrate
    sqlsequencereset
    squashmigrations
    startapp
    startproject
    test
    testserver
Note that only Django core commands are listed as settings are not properly configured (error: Requested setting INSTALLED_APPS, but settings are not configured. You must either define the environment variable DJANGO_SETTINGS_MODULE or call settings.configure() before accessing settings.).

(env) C:\django>django-admin startproject mysite

(env) C:\django>cd mysite
to open vscode
(env) C:\django\mysite>code .