I believe the best way to learn full-stack dev is to create a CRUD app in that language with simple front-back/end and a db connection.
So this guide will walk you through creating a simple CRUD (Create, Read, Update, Delete) Todo application using Django. We’ll set up the project, create an app, and organize everything in Django’s recommended directory structure.
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Prerequisites
Before we start, ensure you have:
- Python installed (preferably version 3.6 )
- Django installed (install using pip install django if you haven't yet)
Steps Overview
- Setting up the Django Project and App
- Defining the Model for Todo
- Creating Views for CRUD Operations
- Adding URLs for each View
- Creating HTML Templates for the App
- Running the Server
Step 1: Set Up the Django Project and App
- Create a Django project named todo_project:
django-admin startproject todo_project cd todo_project
- Create an app named todo:
python manage.py startapp todo
- Directory Structure at This Point:
Your folder should look like this:
todo_project/ ├── manage.py ├── todo/ # App directory created │ ├── migrations/ │ ├── __init__.py │ ├── admin.py │ ├── apps.py │ ├── models.py │ ├── tests.py │ ├── views.py └── todo_project/ ├── __init__.py ├── asgi.py ├── settings.py ├── urls.py ├── wsgi.py
- Register the App in todo_project/settings.py: Open settings.py and add 'todo' to INSTALLED_APPS:
INSTALLED_APPS = [ # Other installed apps 'todo', ]
Step 2: Define the Todo Model
- Define the Todo Model in todo/models.py:
Add the following code to create a model with fields for task (description) and completed (status).
from django.db import models class Todo(models.Model): task = models.CharField(max_length=200) completed = models.BooleanField(default=False) def __str__(self): return self.task
- Apply Migrations:
After defining the model, run these commands to create the database tables for this model:
python manage.py makemigrations python manage.py migrate
Step 3: Create Views for CRUD Operations
Define views for creating, listing, updating, and deleting todos in todo/views.py:
from django.shortcuts import render, redirect from .models import Todo # Create a new Todo def create_todo(request): if request.method == 'POST': task = request.POST['task'] Todo.objects.create(task=task) return redirect('list_todos') return render(request, 'todo/create_todo.html') # List all Todos def list_todos(request): todos = Todo.objects.all() return render(request, 'todo/list_todos.html', {'todos': todos}) # Update a Todo def update_todo(request, todo_id): todo = Todo.objects.get(id=todo_id) if request.method == 'POST': todo.task = request.POST['task'] todo.completed = 'completed' in request.POST todo.save() return redirect('list_todos') return render(request, 'todo/update_todo.html', {'todo': todo}) # Delete a Todo def delete_todo(request, todo_id): todo = Todo.objects.get(id=todo_id) todo.delete() return redirect('list_todos')
Step 4: Add URL Patterns
Define the URLs for each view in todo/urls.py:
from django.urls import path from . import views urlpatterns = [ path('', views.list_todos, name='list_todos'), path('create/', views.create_todo, name='create_todo'), path('update/<int:todo_id>/', views.update_todo, name='update_todo'), path('delete/<int:todo_id>/', views.delete_todo, name='delete_todo'), ]
In the main urls.py file, include the app’s URLs:
from django.contrib import admin from django.urls import path, include urlpatterns = [ path('admin/', admin.site.urls), path('', include('todo.urls')), ]
Step 5: Create HTML Templates
Now, create HTML templates inside the templates directory within the todo app. Follow this structure:
todo/ ├── migrations/ ├── templates/ │ └── todo/ │ ├── list_todos.html │ ├── create_todo.html │ └── update_todo.html ├── models.py ├── views.py └── ...
- Create the Templates Folder Structure:
mkdir -p todo/templates/todo
- Create the Templates:
list_todos.html
Displays a list of tasks and provides links to add, edit, or delete tasks.
django-admin startproject todo_project cd todo_project
create_todo.html
A form for adding a new task.
python manage.py startapp todo
update_todo.html
A form for editing an existing task.
todo_project/ ├── manage.py ├── todo/ # App directory created │ ├── migrations/ │ ├── __init__.py │ ├── admin.py │ ├── apps.py │ ├── models.py │ ├── tests.py │ ├── views.py └── todo_project/ ├── __init__.py ├── asgi.py ├── settings.py ├── urls.py ├── wsgi.py
Step 6: Run the Server
Now that everything is set up, run the Django development server to test the app:
INSTALLED_APPS = [ # Other installed apps 'todo', ]
Visit http://127.0.0.1:8000/ in your browser. You should see the Todo list and be able to create, update, and delete tasks.
Final Directory Structure
from django.db import models class Todo(models.Model): task = models.CharField(max_length=200) completed = models.BooleanField(default=False) def __str__(self): return self.task
And that’s it! You’ve successfully created a Django Todo app with a CRUD interface. This structure is scalable, and you can now add additional features or style the app with CSS. Happy coding!
The above is the detailed content of Building a Django CRUD Todo App from Scratch. For more information, please follow other related articles on the PHP Chinese website!

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