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Django Unleashed, by Andrew Pinkham
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Django is an amazingly powerful system for creating modern, dynamic websites. But programming Django hasn’t always been easy–until now. Django Unleashed is your step-by-step, beginner-friendly guide to leveraging Django’s core capabilities and its powerful contributed library. You’ll learn in the most effective way possible: hands on, by building a fully functional Django website from scratch. You’ll even deploy the website to the cloud.
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As you build your website, expert Django consultant and trainer Andrew Pinkham reveals how websites operate; how Django makes building websites easy; how to write Python code that leverages its immense capabilities; and how to build solutions that are robust, reliable, and secure. You’ll start simply and learn to solve increasingly challenging problems: mastering new features and understanding how Django’s architecture shapes their behavior, and gaining essential knowledge for working with any web framework, not just Django.
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Drawing on his extensive experience teaching Django, Pinkham answers the key questions beginners ask most often. And as you gain experience, you’ll learn advanced techniques for enhancing site functionality and performance, strengthening security, promoting code reuse, and much more.
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Detailed information on how to…
- Quickly start a new Django project and establish a strong foundation for a growing site
- Define how your data is organized and create a SQLite database to manage it
- Quickly produce HTML with Django templates
- Create dynamic webpages with Django’s URL patterns and views, including function views, class-based views, and generic views
- Enable efficient, reliable data input with Django Forms and custom form validations
- Understand the Model-View-Controller (MVC) architecture, compare it to Model-Template-Views, and gain a holistic understanding of Django’s structure
- Write as little code as possible, simplify code reuse, and mitigate software decay by adhering to the Don’t Repeat Yourself paradigm.
- Dive into Django source code to troubleshoot problems
- Extend site functionality with Django’s contributed library
- Protect your site with user authentication and permissions
- Avoid security pitfalls such as SQL Injection, XSS, and CSRF
- Optimize site performance
- Deploy your site to a managed cloud service and to a PostgreSQL database
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- Sales Rank: #193708 in Books
- Published on: 2015-11-19
- Original language: English
- Number of items: 1
- Dimensions: 9.00" h x 1.30" w x 7.00" l, .0 pounds
- Binding: Paperback
- 840 pages
About the Author
Andrew Pinkham is a software engineer and owner of JamBon Software, which specializes in web and mobile products and also offers Python and Django training. He prides himself on being an engineer who can communicate complex ideas in simple ways, and is passionate about security and distributed systems. In his free time, Andrew writes fiction and swims. A 2009 graduate of Dartmouth College, he can be found online at afrg.co.
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Most helpful customer reviews
6 of 6 people found the following review helpful.
This is by far the best of the half dozen Django books I have read.
By Amazon Customer
I know Python and some HTML but little of building a web site. I especially like Pinkham’s style of doing the detail and then eliminating the detail (refactoring) as he moves up to greater levels of abstraction. This helps me understand what is really going on inside the black box of the more abstract version. There is a fair amount of explaining how a web site works, what functions it needs to include, and why a specific function is useful as well as the Django implementation of it. For example, this book explains what a slug field is and why you would want one. All the other books and tutorials I have read talked about slug fields but didn’t explain why you would want one. I was left with the impression it was something only useful for a news site. I could go on and on with details like this that were cleared up by this book. Before I bought the book I was concerned by the reviews that said it was difficult to understand because there was too much detail. Now that I have it, I can see why one would say this. It is not an issue for me and the author does recommend an approach for those that would prefer to start with the more abstract and move to detail.
I agree with the comment made by another reviewer that the font in the print edition could be a bit larger.
7 of 8 people found the following review helpful.
How to proceed without section 3.6.
By Luis Morais
[This is both a provisional review and a fully-Django alternative to the complicated instructions in section 3.6, page 56, also noted by another reviewer (thanks I.J., I also can't get things to work that way either). My wish is that we all can continue using what I think to be so far a good book, past the problematic section.
The two stars lost (provisionally until I read the whole book, hopefully without any more roadblocks) were taken away because: a) the author asks readers to find information on how to get everything installed and set up by themselves instead of owning up the teaching process from beginning to end and b) the author, who prides himself as someone who can communicate programming easily (as he does in most cases), unfortunately fell into programmer's elitism for a second time when he decided to teach the "hard way" believing that would be better for our "learning" of how Django and databases interact.
The basis of my instructions below were mostly learnt with the Django Girls tutorial. I just discovered what caused the code taught not to work for me and updated this review with the solution I found. So now you have one or two new ways to create your tags, register startups and create blog posts. I hope this may be useful for anyone to continue enjoying this nice book.]
----------------------------------- **** -----------------------------------
A. HOW TO PROCEED WITH SECTION 3.6.
(PAGES 56 - 72)
[Added on 29/01/2016]
When I first tried to enter the tags into the database via Python's interactive shell as instructed on example 3.39, page 57, I got an error when I called for "organizer.models import Tag, Startup, NewsLink":
***ImproperlyConfigured: You must either define the environment variable DJANGO_SETTINGS_MODULE or call settings.configure() before accessing settings***
Please try the steps below in your Windows Command Prompt if you got stuck with the same issue:
---------
Step 1. Call the Python Interactive shell:
> python manage.py shell
Calling the interactive shell with manage.py (instead of just loading Python with the command "python" from the command prompt as we newbies would normally do) could be enough to collect the Django environment variables as instructed by the author but somehow it still didn't work for me. So I carried on to step 2 below.
---------
Step 2. Call the Django environment variables with the following in the command line:
> from django.test.utils import setup_test_environment
--------
Step 3. Now follow the instructions as per example 3.39, page 57 and continue.
----------------------------------- **** -----------------------------------
B. HOW TO PROCEED WITHOUT SECTION 3.6.
(SKIPPING PAGES 56 - 72)
The book require you to add tags and slugs (Django, django...), create a startup and a blog post. You can easily do this via the Django Admin but you need to do a few things that haven't been taught yet (Instructions below refer to a Windows system):
---------
1. CREATE SUPERUSER (to the tune of Super Trooper)
1.1 First create a superuser. In the Windows command line go to your working folder (../suorganizer/suorganizer) and call this:
> python manage.py createsuperuser
Once you finish the process, take note of your login and password 'coz, you can trust me, you will forget them as soon as you change screens ;).
---------
2. FIRE UP THE QUATTRO
2.1. Start the server from the Windows command line:
> python manage.py runserver
2.2. Go to your localhost:8000/admin (Amazon keeps editing out the localhost ip 127.0.etc...) and login with your superuser credentials.
I just want you to make sure you can get in and access the admin area Django ***effortlessly*** created for you. Once you are in the admin area, you will just see “users” and “groups” listed. Not much happening but be prepared to be amaAaAazed with Django…
2.3. Close the Command window or press Ctrl + C in the Command Prompt to stop the server. In fact, you are not really required to stop the server, Django will check everything is in the right place and automatically stop and restart the server as code changes happen.
---------
3. ADD POST, TAG, STARTUP and NEWSLINK TO THE ADMIN AREA
In your code editor do the following:
3.1. In /suorganizer/suorganizer/blog/admin.py overwrite and save the page with the following code (try to guess what is going to happen):
-------- copy from below -----------
from django.contrib import admin
from .models import Post
# Register your models here.
admin.site.register(Post)
-------- copy until above-----------
3.2. In /suorganizer/suorganizer/organizer/admin.py overwrite and save the page with the following code:
-------- copy from below -----------
from django.contrib import admin
from .models import Tag, Startup, NewsLink
# Register your models here.
admin.site.register(Tag)
admin.site.register(Startup)
admin.site.register(NewsLink)
-------- copy until above-----------
---------
4. CHECK, MAKEMIGRATIONS, MIGRATE
4.1. First check you got your code all nicely written, so in the command line call this:
> python manage.py check
If anything pops up, you should make sure it is corrected until it shows no errors.
4.2. Secondly, double-check the database models are up-to-date:
> python manage.py makemigrations
4.3. Finally, create the databases that will store your tags, start ups, posts and news links:
> python manage.py migrate
---------
5. FIRE UP THE QUATTRO AGAIN
5.1. Start the server from the Windows command line:
> python manage.py runserver
5.2. Go to your localhost:8000/admin (Amazon keeps editing out the localhost ip 127.0.etc...) and login with your superuser credentials.
5.3. Can you feel the love now? Your admin area now should have 3 sub-areas:
a) Authentication and Authorization;
b) Blog;
c) Organizer.
Under each sub area you should see the fields you created in blog/models.py (Blog posts) and organizer/models.py (News articles, Startups and Tags).
Now you can see your babies, aren’t they beautiful?
---------
6. WHEN THE INSTRUCTIONS COME ALONG YOU JUST TAG THEM
Awright, we still need to add the tags from section 3.7 so that the instructions in section 4.2, example 4.4 can be followed. Instead of following the obnoxious way taught by the book, let’s do it the Django way and enter those tags via a user interface despite the horror and scorn of the programming elites:
6.1. In the Organizer area in the “Tags” row click on the “Add tag +” button.
6.2. Add the pairs below by entering the first for the name and the second for the slug (url), then click the “Save and add another” button to continue entering the following pairs, as per example 3.62, page 63:
Pair 1: Django, django;
Pair 2: Education, education;
Pair 3: Mobile, mobile;
Pair 4: Video Games, video-games
Pair 5: Web, web
6.3. Now go back to the Admin page and select "Add Startup" and fill up and save the new startup form with the following information as found in example 3.66, page 64:
Name: JamBon Software
Slug (url): jambon-software
Contact: [Amazon edited. The email provided on example 3.66, page 64]
Description: Web and Mobile Consulting.
Django Tutoring.
Founded: 18/01/2013
Website: [Amazon edited. The website provided on example 3.66, page 64]
Tag: Django
6.4. Now let's create and save a new blog post as per example 3.70, page 65:
Title: Django Training
Slug: django-training
Text: Learn Django in a classroom setting with JamBon Software.
Tags: Django
Startups: JamBon Software
---------
7. SKIP TO PAGE 73 FEELING LIKE A NINJA
2 of 2 people found the following review helpful.
Detailed Django Tutorial Albeit Long and Verbose
By William P Ross
Pinkham's style took awhile for me to get used to. The first 300 pages are details about Django models, views, and other basics. I found myself pretty lost in the details, but the author keeps promising it will be clear soon. Chapter 12 is called "The Big Picture" and finally put these details in perspective. I was left wondering why the big picture chapter was not at the beginning of the book though.
As a Django tutorial this book is an excellent resource. There's tons of coding samples, and the examples are put on GitHub as well. The author knows Django very well, and speaks of best practices a lot. This was the first Django book I have read and felt I got a pretty good idea of what was going on. I could see it being a valuable reference when working with Django.
One of my main issues with this book is that it is overly verbose in certain places. One example is Pinkham introduces Finite State Machines on page 190 as a way of examining all possible outcomes of some events. He gives a beginner's explanation of FSMs, but I was wondering why a simple truth table would not be suitable instead.
Another example is the book mentions DRY (Don't Repeat Yourself) many times, yet in the Appendix he writes the same Introduction seven times to each appendix section about how it is not a full tutorial. There's even an appendix about compiler theory... this is what I mean about being overly verbose, stating obvious things, and explaining too much not related to Django.
This book could be 500 pages if the author made it more concise and I think it would be more useful as well. Overall, this is a solid up to date Django tutorial that can be very useful for a developer.
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