Django Python Cheatsheet

Django is a high-level web framework for building web applications in Python. It follows the “don’t repeat yourself” (DRY) principle and encourages rapid development by providing a clean and pragmatic design. Whether you’re a beginner or an experienced developer, having a Django cheatsheet at your fingertips can save you time and effort. This cheatsheet serves as a quick reference guide to key Django concepts, commands, and best practices.

Getting Started

1. Installation

pip install django

2. Create a Project

django-admin startproject projectname

3. Create an App

cd projectname
python manage.py startapp appname

4. Run Development Server

python manage.py runserver

Models

5. Define a Model

from django.db import models

class MyModel(models.Model):
    field1 = models.CharField(max_length=100)
    field2 = models.IntegerField()

6. Migrate Database

python manage.py makemigrations
python manage.py migrate

7. Create Superuser

python manage.py createsuperuser

Views

8. Create a View

from django.shortcuts import render

def my_view(request):
    return render(request, 'template_name.html', context)

9. Class-Based Views

from django.views import View

class MyView(View):
    def get(self, request):
        return render(request, 'template_name.html', context)

Templates

10. Template Variables

{{ variable }}

11. Template Tags

{% tag %}

12. Template Filters

{{ value|filter }}

Forms

13. Create a Form

from django import forms

class MyForm(forms.Form):
    field1 = forms.CharField(max_length=100)
    field2 = forms.IntegerField()

14. Handling Forms in Views

from django.shortcuts import render
from .forms import MyForm

def my_form_view(request):
    if request.method == 'POST':
        form = MyForm(request.POST)
        if form.is_valid():
            # Process form data
    else:
        form = MyForm()

    return render(request, 'template_name.html', {'form': form})

URL Patterns

15. Create URL Patterns

from django.urls import path
from . import views

urlpatterns = [
    path('my-view/', views.my_view, name='my-view'),
]

Middleware

16. Create Custom Middleware

class MyMiddleware:
    def __init__(self, get_response):
        self.get_response = get_response

    def __call__(self, request):
        # Code to be executed for each request
        response = self.get_response(request)
        # Code to be executed for each response
        return response

Authentication

17. User Authentication

from django.contrib.auth.decorators import login_required

@login_required
def my_authenticated_view(request):
    return render(request, 'template_name.html', context)

18. Login and Logout Views

from django.contrib.auth.views import LoginView, LogoutView

urlpatterns = [
    path('login/', LoginView.as_view(), name='login'),
    path('logout/', LogoutView.as_view(), name='logout'),
]

Static Files

19. Include Static Files in Templates

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

20. Collect Static Files

python manage.py collectstatic

Django Admin

21. Customize Django Admin

from django.contrib import admin
from .models import MyModel

class MyModelAdmin(admin.ModelAdmin):
    list_display = ('field1', 'field2')

admin.site.register(MyModel, MyModelAdmin)

This Django cheatsheet provides a quick reference to essential commands and concepts, but Django is a powerful framework with many more features and options. Refer to the official Django documentation for in-depth information and guidance on specific topics.

FAQ