Django
Source: djangoproject.com
Installing
Installation:
sudo pip3 install django
Check installed version:
python3 -m django --version
Creating project
cd /home/mycode #Do not put code under /var/www django-admin startproject mysite
Avoid using names like
django: conflict with Django itself test: conflicts with a built-in Python package
Startproject command will create:
mysite/ manage.py mysite/ __init__.py settings.py urls.py wsgi.py
These files are:
- The outer mysite/: Just a container for the project. It can be renamed it to anything.
- manage.py: Command-line utility that allows to interact with this Django project in various ways.
- The inner mysite/ directory is the actual Python package for the project. This is the Python package name to use to import anything inside it (e.g. mysite.urls).
- mysite/__init__.py: Empty file that tells Python that this directory should be considered a Python package.
- mysite/settings.py: Settings/configuration for this Django project.
- mysite/urls.py: The URL declarations for this Django project; a “table of contents” of your Django-powered site.
- mysite/wsgi.py: An entry-point for WSGI-compatible web servers to serve your project.
Running Project
python3 manage.py runserver http://127.0.0.1:8000/
Changing the port
python3 manage.py runserver 8080
Listen on all available public IPs:
python3 manage.py runserver 0:8000 python3 manage.py runserver 0.0.0.0:8000
Automatic reloading of runserver:
The server automatically reloads Python code for each request as needed. No need to restart the server for code changes to take effect. Some actions like adding files don’t trigger a restart, need to restart the server in these cases.
Invalid http_host header
Need to add 198.211.99.20 to ALLOWED_HOSTS setting in project settings.py file ALLOWED_HOSTS = ['198.211.99.20', 'localhost', '127.0.0.1']
Creating an App
cd mytool
python3 manage.py startapp myapp
- This is the simplest view possible in Django.
- Edit the /mytool/myapp/views.py file:
from django.http import HttpResponse
def index(request):
return HttpResponse("Hello world!")
- To call the view, we need to map it to a URL - and for this we need a URLconf.
- To create a URLconf in the polls directory, create a file called urls.py.
- Create the /mytool/myapp/urls.py file:
from django.conf.urls import url
from . import views
urlpatterns = [
url(r'^$', views.index, name='index'),
]
- The next step is to point the root URLconf at the myapp.urls module.
- In mytool/urls.py, add an import for django.urls.include and insert an include() in the urlpatterns list,
- Edit the /mytool/mytool/urls.py file and modify it to look like this:
from django.conf.urls import url
from django.urls import include
urlpatterns = [
url(r'^myapp/', include('myapp.urls')),
]
Test the site:
http://10.140.197.8:8080/myapp/
Deploy Django project
This section is under construction. |
- References
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