Django Training

Training Django

Install all package :

If you use virtual environment :

Install virtual environement :

pip install virtualenv

Create a virtual environment for a project :

virtualenv venv

Begin to use env :

Windows:

env\Scripts\activate

Linux:

source /env/bin/activate

For stop :

deactivate

Install all packages:

pip install -r requirements.txt

If we want to add new packages:

pip freeze > requirements.txt

Remarque :

We put the CI for run tests : .github/workflows/pythonapp.yml for the beging that will test only test_pytest.py

Begin With Django:

1) Create files manager :

django-admin startproject <mysite>

That will build folder mysite with folders and files :

mysite/
    manage.py
    mysite/
        __init__.py
        settings.py
        urls.py
        asgi.py
        wsgi.py

2) Check my Server :

I need to enter in my folder : cd test_site

and run my server :

py manage.py runserver

you can check now your page : http://127.0.0.1:8000/

2-bis) Give the IP available:

All available public IPs: Listen on all available public IPs use: (0 is a shortcut for 0.0.0.0. )

py manage.py runserver 0:8000

3) Creation application and Work with rooting in Django:

we need to be at the same level of manage.py before to run this:

python manage.py startapp polls

that will create :

polls/
    __init__.py
    admin.py
    apps.py
    migrations/
        __init__.py
    models.py
    tests.py
    views.py

We will add a file urls.py :

from django.urls import path
from . import views
urlpatterns = [
    path('', views.index, name='index'),
]

and put something in views.py :

from django.http import HttpResponse
def index(request):
    return HttpResponse("Hello, world. You're at the polls index.")

that will read our function index when we enter in /polls/

For rooting our new app And in test_site/urls.py we will import include and this line:

path('polls/', include('polls.urls')),

relaunch our server Now we can check the URL: http://localhost:8000/polls/

4) Database configuration:

python manage.py migrate

we will set in the database: 'django.contrib.admin', 'django.contrib.auth', 'django.contrib.contenttypes', 'django.contrib.sessions', 'django.contrib.messages', 'django.contrib.staticfiles',

We want to create database now : We will build a model into polls/models.py
For activate model in settings.py we need to add a line into INSTALLED_APPS: 'polls.apps.PollsConfig'
Indicate model change : python manage.py makemigrations polls 3 bis) Indicate what kind of model : python manage.py sqlmigrate polls 0001
add the new migration : python manage.py migrate

5) Create Superadmin

python manage.py createsuperuser

Now we can manage some data in the administation

6) Template :

we need to build a folder into polls and by convention add an other folder with the same name as our app (in this example polls ) i this folders we will put all template html we need we will manage thoses templates with urls.py and views.py

7) Create Test :

Test must be a file in polls the name of the file must begin by test or tests by convention In this system it s will find automaticly all tests if the name begin by test for launch tests in pools:

python manage.py test polls

8) Static files : css , img ...

we need to build a directory static in polls like templates static is in link with STATICFILES_FINDERS into Django AppDirectoriesFinder search « static » into each app of INSTALLED_APPS Into static we need also polls

css:

polls/static/polls/style.css

load static styles.csspython manage.py runserver

{% load static %}
<link rel="stylesheet" type="text/css" href="{% static 'polls/style.css' %}">

images:

polls/static/polls/images/background.png

YonathanGuez/django_training