Book Image

Web Development with Django Cookbook- Second Edition - Second Edition

By : Aidas Bendoraitis
Book Image

Web Development with Django Cookbook- Second Edition - Second Edition

By: Aidas Bendoraitis

Overview of this book

Django is a web framework that was designed to strike a balance between rapid web development and high performance. It has the capacity to handle applications with high levels of user traffic and interaction, and can integrate with massive databases on the backend, constantly collecting and processing data in real time. Through this book, you'll discover that collecting data from different sources and providing it to others in different formats isn't as difficult as you thought. It follows a task-based approach to guide you through all the web development processes using the Django framework. We’ll start by setting up the virtual environment for a Django project and configuring it. Then you’ll learn to write reusable pieces of code for your models and find out how to manage database schema changes using South migrations. After that, we’ll take you through working with forms and views to enter and list data. With practical examples on using templates and JavaScript together, you will discover how to create the best user experience. In the final chapters, you'll be introduced to some programming and debugging tricks and finally, you will be shown how to test and deploy the project to a remote dedicated server. By the end of this book, you will have a good understanding of the new features added to Django 1.8 and be an expert at web development processes.
Table of Contents (18 chapters)
Web Development with Django Cookbook Second Edition
Credits
About the Author
About the Reviewers
www.PacktPub.com
Preface
Index

Uploading images


In this recipe, we will take a look at the easiest way to handle image uploads. You will see an example of an app, where the visitors can upload images with inspirational quotes.

Getting ready

Make sure to have Pillow or PIL installed in your virtual environment or globally.

Then, let's create a quotes app and put it in INSTALLED_APPS in the settings. Then, we will add an InspirationalQuote model with three fields: the author, quote text, and picture, as follows:

# quotes/models.py
# -*- coding: UTF-8 -*-
from __future__ import unicode_literals
import os
from django.db import models
from django.utils.timezone import now as timezone_now
from django.utils.translation import ugettext_lazy as _
from django.utils.encoding import python_2_unicode_compatible

def upload_to(instance, filename):
    now = timezone_now()
    filename_base, filename_ext = os.path.splitext(filename)
    return "quotes/%s%s" % (
        now.strftime("%Y/%m/%Y%m%d%H%M%S"),
        filename_ext.lower(),
...