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Django Todo App

Creating a Django Todo app involves several steps, including setting up the Django project, creating models for the tasks, setting up views and templates, and configuring the database. Here's a step-by-step guide to help you create a simple Todo app using Django:


Step 1: Install Django

Make sure you have Python installed on your system. You can then install Django using pip:


pip install django

Step 2: Create a Django Project and Todo App

Create a new Django project and a Todo app within that project:


django-admin startproject todo_project
cd todo_project
python manage.py startapp todo_app

Step 3: Define the Model

In the models.py file inside the todo_app folder, define the Todo model:


from django.db import models

class Todo(models.Model):
    title = models.CharField(max_length=200)
    description = models.TextField()
    completed = models.BooleanField(default=False)

    def __str__(self):
        return self.title

Step 4: Configure the Database

In the settings.py file of the todo_project, configure the database settings. By default, Django uses SQLite, which is perfect for development:



# settings.py
INSTALLED_APPS = [
    # ...
    'todo_app',
    # ...
]

# ...

DATABASES = {
    'default': {
        'ENGINE': 'django.db.backends.sqlite3',
        'NAME': BASE_DIR / 'db.sqlite3',
    }
}
    

Step 5: Create the Database Tables

Run the following commands to create the necessary database tables:


python manage.py makemigrations
python manage.py migrate

Step 6: Create Views and Templates

In the views.py file inside the todo_app folder, define views for listing, adding, and completing tasks:


from django.shortcuts import render, redirect
from .models import Todo

def todo_list(request):
    todos = Todo.objects.all()
    return render(request, 'todo_list.html', {'todos': todos})

def add_todo(request):
    if request.method == 'POST':
        title = request.POST['title']
        description = request.POST['description']
       Todo.objects.create(title=title, description=description)
        return redirect('todo_list')
    return render(request, 'add_todo.html')

def complete_todo(request, todo_id):
    todo = Todo.objects.get(id=todo_id)
    todo.completed = True
    todo.save()
    return redirect('todo_list')

Step 7: Create Templates

Create two HTML templates inside the templates folder:


1. todo_list.html:



<!DOCTYPE html>
<html>
<head>
    <title>Todo List</title>
</head>
<body>
    <h1>Todo List</h1>
    <ul>
        {% for todo in todos %}
        <li>
            {{ todo.title }} - {{ todo.description }}
            {% if not todo.completed %}
            <a href="{% url 'complete_todo' todo.id %}">Complete</a>
            {% else %}
           <span>Completed</span>
            {% endif %}
        </li>
        {% endfor %}
    </ul>
    <a href="{% url 'add_todo' %}">Add Todo</a>
</body>
</html>

2. add_todo.html:


<!DOCTYPE html>
<html>
<head>
    <title>Add Todo</title>
</head>
<body>
    <h1>Add Todo</h1>
    <form method="post">
        {% csrf_token %}
        <label for="title">Title:</label>
        <input type="text" name="title" required>
        <br>
        <label for="description">Description:</label>
        <textarea name="description" required></textarea>
        <br>
        <button type="submit">Add</button>
    </form>
    <a href="{% url 'todo_list' %}">Back to Todo List</a>
</body>
</html>

Step 8: Configure URLs

In the urls.py file of the todo_app folder, define the URLs for the views:


from django.urls import path
from . import views

urlpatterns = [
    path('', views.todo_list, name='todo_list'),
    path('add/', views.add_todo, name='add_todo'),
   path('complete/<int:todo_id>/', views.complete_todo, name='complete_todo'),
]

Step 9: Run the Development Server

Start the Django development server:


python manage.py runserver

Now you can access your Todo app by visiting http://127.0.0.1:8000/ in your web browser. You should see the Todo list with the option to add new tasks and mark them as completed.

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