Django Crash Course (Daniel Roy Greenfield, Audrey Roy Greenfield) (Z-Library)

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Django Crash Course Covers Python 3.8 and Django 3.x Daniel Roy Greenfeld, Audrey Roy Greenfeld 2020-03-10 Contents Copyright 22 Introduction 23 Why Learn Django? . . . . . . . . . . . . . . . . . . . 24 When the Going Gets Tough . . . . . . . . . . . . . . 26 This Book is intended for Django 3.x and Python 3.8 . 26 How This Book is Structured . . . . . . . . . . . . . . 27 Conventions Used in this Book . . . . . . . . . . . . . 27 1 The Ultimate Django Setup 29 1.1 Goal: A Professional-Quality Development Envi- ronment . . . . . . . . . . . . . . . . . . . . . . . 29 1.2 Core Concepts . . . . . . . . . . . . . . . . . . . 30 1.3 Step 1: Install Conda . . . . . . . . . . . . . . . . 31 1

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1.4 Step 2: Install Visual Studio Code . . . . . . . . 34 1.5 Step 3: Installing Git . . . . . . . . . . . . . . . . 35 1.6 Step 4: Installing PostgreSQL . . . . . . . . . . . 36 1.7 Summary . . . . . . . . . . . . . . . . . . . . . . 37 I Hello, World in Django 38 2 Hello, World in Django 38 2.1 The “Hello, World” of Python . . . . . . . . . . . 39 2.2 “Hello, World” of Django: Simple on Purpose . . 40 2.3 Projects Goals . . . . . . . . . . . . . . . . . . . 40 2.4 Prerequisites . . . . . . . . . . . . . . . . . . . . 40 3 Preparation: Install Dependencies 42 3.1 What’s a Dependency? . . . . . . . . . . . . . . . 42 3.2 Set Up a New Conda Environment . . . . . . . . 42 3.3 Install Django . . . . . . . . . . . . . . . . . . . . 43 3.4 Summary . . . . . . . . . . . . . . . . . . . . . . 44 4 Generate a Starter Django Project 45 4.1 Anatomy of a Bare-Bones Django Project . . . . 45 4.2 manage.py . . . . . . . . . . . . . . . . . . . . . . 46 4.3 settings.py . . . . . . . . . . . . . . . . . . . . . . 47 4.4 Other Settings . . . . . . . . . . . . . . . . . . . 48 4.5 Exercise . . . . . . . . . . . . . . . . . . . . . . . 49 2

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5 Create a Database and Run the Project 50 5.1 Ensure We Are in the Hellodjango project . . . . . 50 5.2 Creating the Database . . . . . . . . . . . . . . . 50 5.3 Start Up Runserver . . . . . . . . . . . . . . . . . 51 5.4 Runserver Has Started Up . . . . . . . . . . . . . 52 5.5 Success! . . . . . . . . . . . . . . . . . . . . . . . 52 6 Create a Django-Superuser 53 6.1 Stop runserver if It Is Still Running . . . . . . . . 53 6.2 Run createsuperuser . . . . . . . . . . . . . . . . . 54 6.3 Summary . . . . . . . . . . . . . . . . . . . . . . 54 7 Practice Using the Admin 55 7.1 Restart runserver . . . . . . . . . . . . . . . . . . 55 7.2 Visit the Admin . . . . . . . . . . . . . . . . . . . 55 7.3 Log in as Our Superuser . . . . . . . . . . . . . . 56 7.4 Explore the Admin . . . . . . . . . . . . . . . . . 56 7.5 Recreating the Hello, World in Django Database 57 7.6 Summary . . . . . . . . . . . . . . . . . . . . . . 57 8 Generate a Homepage App 59 8.1 Stop runserver if Needed . . . . . . . . . . . . . . 59 8.2 Generate a Starter Django App . . . . . . . . . . 59 8.3 Anatomy of a Simple 1-App Django Project . . . 59 8.4 Exercise . . . . . . . . . . . . . . . . . . . . . . . 60 8.5 Main Django Project vs Django Apps . . . . . . 60 3

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9 Prepping the Project for Templates 61 9.1 Configure Your Templates . . . . . . . . . . . . . 61 9.2 Save! . . . . . . . . . . . . . . . . . . . . . . . . . 62 9.3 Lists? Dictionaries? . . . . . . . . . . . . . . . . 62 10 Add a Simple Homepage View 64 10.1 Get to Know URL Routing . . . . . . . . . . . . 64 10.2 Add a URL Pattern for the Homepage . . . . . . 65 10.3 Double-Check the Code . . . . . . . . . . . . . . 66 10.4 Terminology: “Wire in the URL” . . . . . . . . . 67 10.5 Refresh the Page and Trigger an Error . . . . . . 67 11 Create Our First Django Template 69 11.1 Create a Templates Directory . . . . . . . . . . . 69 11.2 Add Index Template . . . . . . . . . . . . . . . . 69 11.3 Start Up Runserver . . . . . . . . . . . . . . . . . 70 11.4 View the First Page . . . . . . . . . . . . . . . . 70 11.5 Recap . . . . . . . . . . . . . . . . . . . . . . . . 71 11.6 Understanding Views and the Templateview Class 71 12 Working With Variables in Templates 73 12.1 Our First Templated Value . . . . . . . . . . . . 73 12.2 What Is my_statement? . . . . . . . . . . . . . . . . 73 12.3 Extend HomepageView . . . . . . . . . . . . . . . 74 12.4 Refresh the Homepage . . . . . . . . . . . . . . . 74 4

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12.5 Exercise: Play Around! . . . . . . . . . . . . . . 75 12.6 Common Questions . . . . . . . . . . . . . . . . . 75 13 Calling View Methods From Templates 77 13.1 Define a View Method . . . . . . . . . . . . . . . 77 13.2 Call the View Method From index.html . . . . . 77 13.3 Reload the Homepage . . . . . . . . . . . . . . . 78 14 Our First Project is Complete! 80 14.1 Summary . . . . . . . . . . . . . . . . . . . . . . 80 14.2 Next Steps . . . . . . . . . . . . . . . . . . . . . 80 II EveryCheese 82 15 The EveryCheese Project 83 15.1 Prerequisites . . . . . . . . . . . . . . . . . . . . 83 15.2 Prepare the EveryCheese Programming Environ- ment . . . . . . . . . . . . . . . . . . . . . . . . . 83 15.3 Create a New Virtual Environment . . . . . . . . 84 15.4 Reactivating Conda Environments . . . . . . . . 84 15.5 Summary . . . . . . . . . . . . . . . . . . . . . . 85 16 Using Cookiecutter and Template 86 16.1 Install the Cookiecutter Library . . . . . . . . . . 86 16.2 Cookiecutter Project Templates . . . . . . . . . . 88 16.3 Using django-crash-starter . . . . . . . . . . . . . 88 5

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16.4 What Happened? . . . . . . . . . . . . . . . . . . 90 16.5 Tips and Troubleshooting . . . . . . . . . . . . . 91 16.6 A Little Cookiecutter Background . . . . . . . . 92 17 Exploring the Generated Boilerplate 93 17.1 Some Basic Components . . . . . . . . . . . . . . 93 17.2 Summary . . . . . . . . . . . . . . . . . . . . . . 94 18 Starting Up Our New Django Project 95 18.1 Let’s Run the Project . . . . . . . . . . . . . . . 95 18.2 Go Into the EveryCheese Directory . . . . . . . . 95 18.3 Start PostgreSQL if Needed . . . . . . . . . . . . 96 18.4 Create the Database . . . . . . . . . . . . . . . . 97 18.5 How to Create It . . . . . . . . . . . . . . . . . . 97 18.6 Install the Dependencies . . . . . . . . . . . . . . 98 18.7 Run the Migrations . . . . . . . . . . . . . . . . . 98 18.8 Start Up Runserver . . . . . . . . . . . . . . . . . 99 19 Cheese Boilers 100 20 Initializing the Git Repo Committing and Push- ing 101 20.1 Why? . . . . . . . . . . . . . . . . . . . . . . . . 101 20.2 We’ll Use GitHub . . . . . . . . . . . . . . . . . . 101 20.3 Create the GitHub Project . . . . . . . . . . . . 101 20.4 Examine the GitHub Instructions . . . . . . . . . 103 20.5 Verify That the Files Got Committed . . . . . . 104 6

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21 Git Is Not for Stinky Cheeses 105 22 What We Get From The Users App 106 22.1 Register a Normal User . . . . . . . . . . . . . . 106 22.2 Verify Our Email . . . . . . . . . . . . . . . . . . 107 22.3 Why Are Emails Printed in the Console? . . . . 109 22.4 Explore the User Profile . . . . . . . . . . . . . . 110 22.5 Edit User Data . . . . . . . . . . . . . . . . . . . 111 22.6 Introducing UserUpdateView . . . . . . . . . . . . . 111 22.7 Introducing UserDetailview . . . . . . . . . . . . . 112 22.8 Understand the Name Field . . . . . . . . . . . . 113 22.9 Understand the Code for UserUpdateView . . . . . . 114 22.10Add Email Addresses . . . . . . . . . . . . . . . . 115 22.11What About the Code? . . . . . . . . . . . . . . 116 23 Adding User Bios 117 23.1 Add a Bio Field . . . . . . . . . . . . . . . . . . . 117 23.2 Create and Run Migrations . . . . . . . . . . . . 117 23.3 Update UserUpdateView . . . . . . . . . . . . . . 118 23.4 Try It Out . . . . . . . . . . . . . . . . . . . . . . 118 24 Adding Bio to User Detail Template 121 24.1 Update the User Detail Template . . . . . . . . . 121 24.2 Add Line Breaks . . . . . . . . . . . . . . . . . . 122 24.3 Commit Our Work . . . . . . . . . . . . . . . . . 123 7

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25 Introducing Tests 124 25.1 Why Test? . . . . . . . . . . . . . . . . . . . . . . 124 25.2 Running Tests . . . . . . . . . . . . . . . . . . . . 124 25.3 What Does a Test Look Like? . . . . . . . . . . . 126 25.4 The Test Foundations . . . . . . . . . . . . . . . 126 25.5 The Actual Test . . . . . . . . . . . . . . . . . . 127 25.6 Using the assert KeyWord . . . . . . . . . . . . . 128 25.7 Introducing coverage.py . . . . . . . . . . . . . . 129 25.8 Using coverage.py . . . . . . . . . . . . . . . . . . 129 25.9 Generate an HTML Coverage Report . . . . . . . 130 25.10More Users App Tests . . . . . . . . . . . . . . . 131 25.11Summary . . . . . . . . . . . . . . . . . . . . . . 131 26 User Profile Cheese 132 26.1 Avatars Will Fit Into Cheese Holes . . . . . . . . 132 27 The Cheeses App and Model 133 27.1 Make Sure We’re at the Project Root . . . . . . . 133 27.2 Create an App Called Cheeses . . . . . . . . . . 133 27.3 Move It Into the Project . . . . . . . . . . . . . . 133 27.4 Set the Cheese Config . . . . . . . . . . . . . . . 134 27.5 Add It to the List of Installed Apps . . . . . . . 134 27.6 Add the Cheese Model . . . . . . . . . . . . . . . 135 27.7 Create and Run the Initial Cheese Migration . . 138 8

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28 Trying Out the Cheese Model 140 28.1 Let’s Try It Out! . . . . . . . . . . . . . . . . . . 140 28.2 Django Shell vs. Shell Plus . . . . . . . . . . . . 140 28.3 Create a Cheese . . . . . . . . . . . . . . . . . . . 140 28.4 Evaluate and Print the Cheese . . . . . . . . . . 141 28.5 View the Cheese’s Name . . . . . . . . . . . . . . 141 28.6 Add a String Method . . . . . . . . . . . . . . . . 142 28.7 Try It Again . . . . . . . . . . . . . . . . . . . . 142 28.8 Commit Our Work . . . . . . . . . . . . . . . . . 143 29 Tests and Test Coverage 144 29.1 Check Test Coverage . . . . . . . . . . . . . . . . 144 29.2 Create a Module for Cheese Model Tests . . . . . 146 29.3 Let’s Test the __str__() Method. . . . . . . . . . 147 29.4 Enter “The Game of Test Coverage” . . . . . . . 148 29.5 Rules of the Game . . . . . . . . . . . . . . . . . 148 29.6 What’s the Point of All This Anyway? . . . . . . 149 29.7 Commit the Cheese Model Tests . . . . . . . . . 150 29.8 Summary . . . . . . . . . . . . . . . . . . . . . . 150 30 The Cheeserator 151 31 Adding Cheeses to the Admin 152 31.1 We Need a Superuser . . . . . . . . . . . . . . . . 152 31.2 Go to the Admin . . . . . . . . . . . . . . . . . . 152 9

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31.3 Explore the Admin So Far . . . . . . . . . . . . . 153 31.4 Register Cheese Model With the Admin . . . . . 153 31.5 Find Colby . . . . . . . . . . . . . . . . . . . . . 153 31.6 Enter More Cheeses via the Admin . . . . . . . . 154 31.7 Some Notes About the Django Admin . . . . . . 156 31.8 Commit Changes . . . . . . . . . . . . . . . . . . 156 31.9 Summary . . . . . . . . . . . . . . . . . . . . . . 157 32 Behind the Curtain 158 32.1 We Are in Control . . . . . . . . . . . . . . . . . 158 33 Class Based View Fundamentals 160 33.1 The Simplest Class-Based View . . . . . . . . . . 160 33.2 Adding More HTTP Methods . . . . . . . . . . . 161 33.3 Advantages of Class Based Views . . . . . . . . . 162 33.4 Composition . . . . . . . . . . . . . . . . . . . . . 162 33.5 Composition Part II . . . . . . . . . . . . . . . . 163 33.6 Intelligent Defaults . . . . . . . . . . . . . . . . . 164 33.7 Standardized HTTP Method Handling . . . . . . 164 33.8 Tips for Writing Class-Based Views . . . . . . . . 165 34 Writing the Cheese List View 166 35 Wiring in the List View Url 167 35.1 Define Cheese URL Patterns . . . . . . . . . . . 167 35.2 Include Cheese URLs in Root URLConf . . . . . 167 35.3 See the View in Action . . . . . . . . . . . . . . . 167 10

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36 The Cheese List Template 169 36.1 Create the List Template . . . . . . . . . . . . . 169 36.2 Fill in the Template . . . . . . . . . . . . . . . . 169 36.3 See the List in Action . . . . . . . . . . . . . . . 170 36.4 Add a Nav Link to the Cheese List . . . . . . . . 171 36.5 Explaining the cheeses:list Name . . . . . . . . . 172 36.6 Commit Our Work . . . . . . . . . . . . . . . . . 173 37 Add the CheeseDetailView 174 37.1 Add the CheeseDetailView URL Pattern . . . . . 174 37.2 Link List Items to Detail Pages . . . . . . . . . . 175 38 The Cheese Detail Template 177 38.1 Add a Cheese Detail Template . . . . . . . . . . 177 38.2 Visit Cheese Detail . . . . . . . . . . . . . . . . . 178 38.3 Commit Our Work . . . . . . . . . . . . . . . . . 178 39 Where to Dip Class Based Views 179 40 Writing Factories for Tests 180 40.1 Produce Cheese Test Data From Factories . . . . 180 40.2 Define a CheeseFactory . . . . . . . . . . . . . . . . 180 40.3 Try Out CheeseFactory . . . . . . . . . . . . . . . . 181 40.4 Delete the Bogus Cheese . . . . . . . . . . . . . . 182 40.5 Commit the Changes . . . . . . . . . . . . . . . . 183 11

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41 Why Use Factories 185 41.1 Factories and Unit Testing . . . . . . . . . . . . . 185 41.2 Approach 1: Calling Create() . . . . . . . . . . . 185 41.3 Approach 2: Calling CheeseFactory() . . . . . . . . 186 41.4 Other Uses . . . . . . . . . . . . . . . . . . . . . 187 41.5 Learn More About Factory Boy . . . . . . . . . . 187 42 Using Factories in Tests 188 42.1 Passing in Field Values Explicitly . . . . . . . . . 188 42.2 Bulk Generation . . . . . . . . . . . . . . . . . . 188 42.3 Reviewing Our Cheeses . . . . . . . . . . . . . . 189 42.4 Cheese Cleanup . . . . . . . . . . . . . . . . . . . 189 42.5 Replacing the Direct Cheese Model Call in Our Existing Test . . . . . . . . . . . . . . . . . . . . 190 42.6 Removing the Name Entirely . . . . . . . . . . . 191 42.7 Commit Our Work . . . . . . . . . . . . . . . . . 192 42.8 Summary . . . . . . . . . . . . . . . . . . . . . . 192 43 How Our Cheese Objects Feel About Your Tests193 44 Finding and Adding a Third Party Countries App195 44.1 Country of Origin . . . . . . . . . . . . . . . . . . 195 44.2 Benefiting From Open Source . . . . . . . . . . . 197 44.3 Check Django Packages . . . . . . . . . . . . . . 197 44.4 Review Django Countries on GitHub . . . . . . . 198 44.5 Look for the Release Number on PyPI . . . . . . 198 12

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44.6 Install It . . . . . . . . . . . . . . . . . . . . . . . 198 44.7 Implement in cheeses/models.py . . . . . . . . . 200 44.8 Migrations! . . . . . . . . . . . . . . . . . . . . . 201 45 Display Cheese Country Data 203 45.1 Add Cheese Countries in the Admin . . . . . . . 203 45.2 Display Country in Cheese Detail . . . . . . . . . 204 45.3 Run the Tests . . . . . . . . . . . . . . . . . . . . 205 45.4 Update CheeseFactory . . . . . . . . . . . . . . . . 205 45.5 Verify That CheeseFactory Works . . . . . . . . . . 206 45.6 Commit Our Work . . . . . . . . . . . . . . . . . 207 46 Implement Cheese Creation by Users 208 46.1 Add a Cheese Creation View . . . . . . . . . . . 208 46.2 Add the Corresponding URL Pattern . . . . . . . 209 46.3 Specify the Desired Form Fields . . . . . . . . . . 212 46.4 Define the Cheese Form Template . . . . . . . . . 212 46.5 Submit the Form . . . . . . . . . . . . . . . . . . 214 46.6 Implement Get_absolute_url() . . . . . . . . . . . 214 46.7 Resubmit the Form . . . . . . . . . . . . . . . . . 216 46.8 Link to the Add Cheese Form . . . . . . . . . . . 218 46.9 Commit the Changes . . . . . . . . . . . . . . . . 219 13

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47 Use Django Crispy Forms for Better Display 221 47.1 Isn’t as_p() Enough? . . . . . . . . . . . . . . . . 221 47.2 A Quick History Lesson . . . . . . . . . . . . . . 222 47.3 Crispy Forms and Cookiecutter Django . . . . . 223 47.4 Our Non-Crispy Form . . . . . . . . . . . . . . . 223 47.5 Use the Crispy Template Tag . . . . . . . . . . . 223 47.6 Reload the Add Cheese Form . . . . . . . . . . . 225 47.7 Commit the Changes . . . . . . . . . . . . . . . . 225 48 Understand View Mixins and LoginRequired- Mixin 227 48.1 User-Generated Content and Accountability . . . 227 48.2 Try Accessing the Add Cheese Form Anonymously 227 48.3 Require Login . . . . . . . . . . . . . . . . . . . . 228 48.4 Try Accessing It as Cheesehead . . . . . . . . . . 230 48.5 View Mixins . . . . . . . . . . . . . . . . . . . . . 230 48.6 Commit the Changes . . . . . . . . . . . . . . . . 231 49 Add a Creator Field and Update Our Cheese Records 232 49.1 Add a Creator Field . . . . . . . . . . . . . . . . 232 49.2 Make and Apply the Migration . . . . . . . . . . 233 49.3 Commit the Changes . . . . . . . . . . . . . . . . 234 14

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50 Track and Display the Cheese Creator 235 50.1 Set the Cheese Creator After Form Validation . . 235 50.2 Display the Creator on the Cheese Detail Pages . 236 50.3 Try It Out . . . . . . . . . . . . . . . . . . . . . . 237 50.4 Commit the Changes . . . . . . . . . . . . . . . . 238 51 Update the Cheese Factory 239 51.1 Run the Tests . . . . . . . . . . . . . . . . . . . . 239 51.2 Modify Cheese Factory . . . . . . . . . . . . . . . 239 51.3 Run the Tests, Again . . . . . . . . . . . . . . . . 240 51.4 Try CheeseFactory in the Shell . . . . . . . . . . . 240 51.5 Delete the Random Cheese . . . . . . . . . . . . 241 51.6 Delete the Random User . . . . . . . . . . . . . . 241 51.7 Commit the Changes . . . . . . . . . . . . . . . . 242 52 Update the Cheese Model Tests 243 52.1 Test Get_absolute_url() . . . . . . . . . . . . . . . 243 52.2 Commit the Changes . . . . . . . . . . . . . . . . 244 53 Test All the Cheese Views 245 53.1 What to Test? . . . . . . . . . . . . . . . . . . . 245 53.2 Start With Imports . . . . . . . . . . . . . . . . . 245 53.3 The First Cheese View Tests . . . . . . . . . . . 246 53.4 Really Test the Cheese List View . . . . . . . . . 250 53.5 Test the Cheese Detail View . . . . . . . . . . . . 251 15

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53.6 Test the Cheese Create View . . . . . . . . . . . 252 53.7 Commit the Changes . . . . . . . . . . . . . . . . 253 53.8 Conclusion . . . . . . . . . . . . . . . . . . . . . 253 54 Test All the Cheese URL Patterns 255 54.1 Add the Imported Cheese . . . . . . . . . . . . . 255 54.2 Write Our First Fixture . . . . . . . . . . . . . . 255 54.3 Test the Cheese List URL Pattern . . . . . . . . 256 54.4 Test the Add Cheese URL Pattern . . . . . . . . 256 54.5 Test the Cheese Detail URL Pattern . . . . . . . 257 54.6 Commit the Changes . . . . . . . . . . . . . . . . 258 55 Adding a CheeseUpdateView and Form Recycling259 55.1 Add the CheeseUpdateView . . . . . . . . . . . . 259 55.2 Wire in the URL Pattern . . . . . . . . . . . . . 260 55.3 Try It in the Browser . . . . . . . . . . . . . . . . 260 55.4 What Happened?!? . . . . . . . . . . . . . . . . . 262 55.5 Link to the Update Form . . . . . . . . . . . . . 265 55.6 Try It in the Browser . . . . . . . . . . . . . . . . 265 55.7 Make Login Required . . . . . . . . . . . . . . . . 265 55.8 Commit the Changes . . . . . . . . . . . . . . . . 266 56 Test the Cheese Forms and Update View 268 56.1 Refactoring our Cheese Fixture . . . . . . . . . . 268 56.2 Test the Add Cheese Page Title . . . . . . . . . . 269 16

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56.3 Test That CheeseUpdateView Is a Good View . . . . 270 56.4 Test That a Cheese Updates Correctly . . . . . . 271 56.5 Commit the Changes . . . . . . . . . . . . . . . . 272 57 EveryCheese is the Foundation! 273 57.1 Summary . . . . . . . . . . . . . . . . . . . . . . 273 57.2 Next Steps After This Book . . . . . . . . . . . . 274 57.3 Giving Us Feedback . . . . . . . . . . . . . . . . 275 III Aftermatter 276 58 Troubleshooting 276 58.1 Troubleshooting Conda Installations on Pre- Catalina OSX . . . . . . . . . . . . . . . . . . . . 276 58.2 Troubleshooting Conda Installations on Catalina or higher OSX . . . . . . . . . . . . . . . . . . . 276 58.3 Troubleshooting PostgreSQL: Role Does Not Exist 277 58.4 Troubleshooting PostgreSQL: Cannot Create Database . . . . . . . . . . . . . . . . . . . . . . 278 58.5 Troubleshooting PsycoPG2 . . . . . . . . . . . . 278 58.6 Troubleshooting GCC Errors on the Mac . . . . 278 58.7 Troubleshooting the MS Visual Studio Build Tools Error . . . . . . . . . . . . . . . . . . . . . 279 59 Changelog 280 59.1 Beta Changelog 2020-03-10 . . . . . . . . . . . . 280 59.2 Beta Changelog 2020-03-06 . . . . . . . . . . . . 280 17

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59.3 Beta Changelog 2020-03-03 . . . . . . . . . . . . 281 59.4 Beta Changelog 2020-02-26 . . . . . . . . . . . . 281 59.5 Beta Changelog 2020-02-22 . . . . . . . . . . . . 281 59.6 Beta Changelog 2020-02-21 . . . . . . . . . . . . 282 59.7 Beta Changelog 2020-02-19 . . . . . . . . . . . . 282 59.8 Alpha Changelog 2020-02-14 . . . . . . . . . . . . 283 59.9 Alpha Changelog 2020-02-11 . . . . . . . . . . . . 284 59.10Alpha Changelog 2020-02-07 . . . . . . . . . . . . 284 59.11Alpha Changelog 2020-02-05 . . . . . . . . . . . . 284 59.12Alpha Changelog 2020-02-04 . . . . . . . . . . . . 285 59.13Alpha Changelog 2020-02-03 . . . . . . . . . . . . 285 60 Acknowledgements 286 60.1 Tech Reviewers . . . . . . . . . . . . . . . . . . . 286 60.2 Contributors to 3.x Beta . . . . . . . . . . . . . . 287 60.3 Contributors to 3.x Alpha . . . . . . . . . . . . . 287 60.4 Typesetting . . . . . . . . . . . . . . . . . . . . . 288 List of Figures 1 Two Scoops Travels the World . . . . . . . . . . 23 2 Scientific Cheese-Based Diagram Explaining Why To Learn Django . . . . . . . . . . . . . . . . . . 24 3 Let’s start with the basics. . . . . . . . . . . . . . 38 4 It worked! Hooray! . . . . . . . . . . . . . . . . . 53 18

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5 Greetings, Hello World . . . . . . . . . . . . . . . 70 6 Greetings . . . . . . . . . . . . . . . . . . . . . . 75 7 Greeting with view method . . . . . . . . . . . . 78 8 The Tasty Cookiecutter Logo . . . . . . . . . . . 92 9 Illustration of cheese boiler, and the location of its boilerplate . . . . . . . . . . . . . . . . . . . . 100 10 Create repository on GitHub . . . . . . . . . . . 102 11 Stinky cheeses getting kicked out by a foot. . . . 105 12 Registration form . . . . . . . . . . . . . . . . . . 107 13 Verify email page . . . . . . . . . . . . . . . . . . 108 14 Verification email in console window . . . . . . . 109 15 Page with Confirm button . . . . . . . . . . . . . 110 16 Minimal user profile . . . . . . . . . . . . . . . . 111 17 UserUpdateView . . . . . . . . . . . . . . . . . . 112 18 UserDetailView . . . . . . . . . . . . . . . . . . . 113 19 UserUpdateView With Bio . . . . . . . . . . . . . 119 20 UserDetailView Without Bio . . . . . . . . . . . 120 21 UserDetailView With Bio . . . . . . . . . . . . . 122 22 No line breaks in UserDetailView . . . . . . . . . 123 23 A block of user profile cheese . . . . . . . . . . . 132 24 Slugs are awesome! . . . . . . . . . . . . . . . . . 137 25 94% coverage . . . . . . . . . . . . . . . . . . . . 144 26 Cheese model coverage . . . . . . . . . . . . . . . 145 27 The Cheeserator device for manipulating cheese. 151 19