Create a Django Model

Creating a Django model involves defining a class that inherits from models.Model and specifying various fields. Here’s a step-by-step guide to create a Django model with common fields:

Install Django (if you haven’t already):
```
pip install django
```

Start a Django Project:

django-admin startproject myproject
cd myproject

Create an App:
```
python manage.py startapp myapp
```

Define the Model: Open the models.py file in your app (myapp/models.py) and define your model. Here’s an example of a Book model:

from django.db import models

class Book(models.Model):
    title = models.CharField(max_length=200)
    author = models.CharField(max_length=100)
    publication_date = models.DateField()
    isbn = models.CharField(max_length=13, unique=True)
    price = models.DecimalField(max_digits=6, decimal_places=2)
    stock = models.PositiveIntegerField()
    description = models.TextField()
    created_at = models.DateTimeField(auto_now_add=True)
    updated_at = models.DateTimeField(auto_now=True)

    def __str__(self):
        return self.title

Add the App to Project Settings: Add your app to the INSTALLED_APPS list in the settings.py file of your project (myproject/settings.py):
```
INSTALLED_APPS = [
    ...
    'myapp',
    ...
]
```
Make Migrations: Create migrations for your model. Migrations are Django’s way of propagating changes you make to your models (adding a field, deleting a model, etc.) into your database schema.
```
python manage.py makemigrations myapp
```
Migrate the Database: Apply the migrations to your database.
```
python manage.py migrate
```
Register the Model in the Admin Site: To make your model visible on the admin site, you need to register it. Open admin.py in your app (myapp/admin.py) and register your model:
```
from django.contrib import admin
from .models import Book

admin.site.register(Book)
```

Run the Development Server: Start the development server to see your changes.

from django.contrib import admin
from .models import Book

admin.site.register(Book)

Create a Superuser (if you haven’t already): To access the admin site, you need a superuser. Create one with the following command:
```
python manage.py createsuperuser
```

Now, you can log in to the Django admin site at http://127.0.0.1:8000/admin/, add some Book entries, and manage them.

References
https://docs.djangoproject.com/en/5.0/topics/db/models/
https://docs.djangoproject.com/en/5.0/ref/models/fields/

Related