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Tango With Django 2

A beginner's guide to web development with Django 2.

Leif Azzopardi and David Maxwell and David Maxwell

Learn how to code web applications in Django 2 and Python 3

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About

About

About the Book

The new edition is now available! Check out Tango with Django 4!

This is the fourth edition of Tango with Django which has now been heavily revised and upgraded to make use of Django 2.x using Python 3.x. The book was first launched in October 2013 by Dr. Leif Azzopardi and Dr. David Maxwell while both were teaching web development at the University of Glasgow. The book has been used as the course text ever since, with literally thousands of undergraduate and postgraduate students using it over the years. Previous editions of the book are freely available at: www.tangowithdjango.com which has been used by over two million visitors!

In this edition you will learn how to build web applications use Django by building a simple app called Rango, a directory of categories and links. Through the process you will learn how to setup your Django projects, create models, views and mappings, as well as user authentication, templates, class based views and testing. Throughout the book, we provide workflows to get you into the Django mindset, reducing the learning curve, explaining the hows and whys of software development, and advocating best practices when developing your web apps. In addition to how to develop with Django, we've included chapters that explain how to incorporate CSS and Twitter's Bootstrap, Javascript and JQuery, and how to integrate external services, like Microsoft Azure's Bing Search API. We also cover how to deploy your Django application to PythonAnywhere.com.

So, if you want to learn Django and build web applications, then Tango with Django provides an all round end-to-end guide for beginners.

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      Author

      About the Authors

      Leif Azzopardi and David Maxwell

      Leif Azzopardi is passionate about Web Development, Web Design, Information Architecture and Software Engineering. His research interests are focused on Information Retrieval and Search Engine Technologies.

      David Maxwell

      David Maxwell has a PhD in Computing Science from the University of Glasgow. During his time as a student, he taught Java, Python and Web Development. His research focused on Information Retrieval.

      Contents

      Table of Contents

      1.Overview

      1. 1.1Why Work with this Book?
      2. 1.2What you will Learn
      3. 1.3Technologies and Services
      4. 1.4Rango: Initial Design and Specification
      5. 1.5Summary

      2.Getting Ready to Tango

      1. 2.1Python 3
      2. Django 2.0, 2.1 or 2.2?
      3. Python Skills Rusty?
      4. 2.2Virtual Environments
      5. 2.3The Python Package Manager
      6. 2.4Integrated Development Environment
      7. 2.5Version Control
      8. 2.6Testing your Implementation

      3.Django Basics

      1. 3.1Testing Your Setup
      2. 3.2Creating Your Django Project
      3. 3.3Creating a Django App
      4. 3.4Creating a View
      5. 3.5Mapping URLs
      6. 3.6Basic Workflows

      4.Templates and Media Files

      1. 4.1Using Templates
      2. 4.2Serving Static Media Files
      3. 4.3Serving Media
      4. 4.4Basic Workflow

      5.Models and Databases

      1. 5.1Rango’s Requirements
      2. 5.2Telling Django about Your Database
      3. 5.3Creating Models
      4. 5.4Creating and Migrating the Database
      5. 5.5Django Models and the Shell
      6. 5.6Configuring the Admin Interface
      7. 5.7Creating a Population Script
      8. 5.8Workflow: Model Setup

      6.Models, Templates and Views

      1. 6.1Workflow: A Data-Driven Page
      2. 6.2Showing Categories on Rango’s Homepage
      3. 6.3Creating a Details Page
      4. Exercises

      7.Forms

      1. 7.1Basic Workflow
      2. 7.2Page and Category Forms

      8.Working with Templates

      1. 8.1Using Relative URLs in Templates
      2. 8.2Dealing with Repetition
      3. 8.3Template Inheritance
      4. 8.4The render() Method and the request Context
      5. 8.5Custom Template Tags
      6. 8.6Summary

      9.User Authentication

      1. 9.1Setting up Authentication
      2. 9.2Password Hashing
      3. 9.3Password Validators
      4. 9.4The User Model
      5. 9.5Additional User Attributes
      6. 9.6Creating a User Registration View and Template
      7. 9.7Implementing Login Functionality
      8. 9.8Restricting Access
      9. 9.9Logging Out
      10. 9.10Tidying up the base.html Hyperlinks
      11. 9.11Taking it Further

      10.Cookies and Sessions

      1. 10.1Cookies, Cookies Everywhere!
      2. 10.2Sessions and the Stateless Protocol
      3. 10.3Setting up Sessions in Django
      4. 10.4A Cookie Tasting Session
      5. 10.5Client-Side Cookies: A Site Counter Example
      6. 10.6Session Data
      7. 10.7Browser-Length and Persistent Sessions
      8. 10.8Clearing the Sessions Database
      9. 10.9Basic Considerations and Workflow

      11.User Authentication with Django-Registration-Redux

      1. 11.1Setting up Django Registration Redux
      2. 11.2Functionality and URL mapping
      3. 11.3Setting up the Templates

      12.Bootstrapping Rango

      1. 12.1The Template
      2. 12.2Quick Style Change

      13.Adding Search to Rango

      1. 13.1The Bing Search API
      2. 13.2Adding Search Functionality
      3. 13.3Putting Search into Rango

      14.Making Rango Tango Exercises

      1. 14.1Tracking Page Clickthroughs
      2. 14.2Searching Within a Category Page
      3. 14.3Create and View User Profiles

      15.Making Rango Tango Hints

      1. 15.1Track Page Clickthroughs
      2. 15.2Searching Within a Category Page
      3. 15.3Creating a UserProfile Instance
      4. 15.4Class-Based Views
      5. 15.5Viewing your Profile
      6. 15.6Listing all Users

      16.JQuery Crash Course

      1. 16.1Including JQuery
      2. 16.2Testing your Setup
      3. 16.3Further DOM Manipulation Examples
      4. 16.4Debugging Hints

      17.AJAX in Django with JQuery

      1. 17.1AJAX and Rango
      2. 17.2Adding a “Like” Button
      3. 17.3Adding Inline Category Suggestions
      4. 17.4Further AJAX-ing

      18.Automated Testing

      1. 18.1Running Tests
      2. 18.2Examining Testing Coverage

      19.Deploying Your Project

      1. 19.1Creating a PythonAnywhere Account
      2. 19.2The PythonAnywhere Web Interface
      3. 19.3Creating a Virtual Environment
      4. 19.4Setting up your Web Application
      5. 19.5Log Files

      20.Final Thoughts

      1. 20.1Acknowledgements

      Appendices

      Setting up your System

      1. Installing Python 3 and pip
      2. Assumption of Knowledge
      3. Virtual Environments
      4. workon and deactivate
      5. Multiple Python Versions
      6. Using pip
      7. Version Control System

      A Crash Course in UNIX-based Commands

      1. Using the Terminal
      2. Core Commands

      A Git Crash Course

      1. Why Use Version Control?
      2. How Git Works
      3. Setting up Git
      4. Basic Commands and Workflow
      5. Recovering from Mistakes

      A CSS Crash Course

      1. Including Stylesheets
      2. Basic CSS Selectors
      3. Element Selectors
      4. Fonts
      5. Colours and Backgrounds
      6. Containers, Block-Level and Inline Elements
      7. Basic Positioning
      8. The Box Model
      9. Styling Lists
      10. Styling Links
      11. The Cascade
      12. Additional Reading

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