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  • Book Overview & Buying Clojure Web Development Essentials
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Clojure Web Development Essentials

Clojure Web Development Essentials

By : Baldwin
4.5 (6)
Buy this Book
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Clojure Web Development Essentials

Clojure Web Development Essentials

4.5 (6)
By: Baldwin
Buy this Book

Overview of this book

This book is for anyone who's worked with Clojure and wants to use it to start developing applications for the Web. Experience or familiarity with basic Clojure syntax is a must, and exposure to Leiningen (or other similar build tools such as Maven) would be helpful.
Table of Contents (14 chapters)
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Preface
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Preface
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What this book covers
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What you need for this book
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Who this book is for
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Conventions
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Reader feedback
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Customer support
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1
1. Getting Started with Luminus
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1. Getting Started with Luminus
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Leiningen
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Dependencies of the app
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Luminus file structure
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Summary
2
2. Ring and the Ring Server
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2. Ring and the Ring Server
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Understanding Ring in Clojure
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What is the Ring Server?
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Configuring and running the Ring Server
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Summary
3
3. Logging
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3. Logging
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What is Timbre?
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Configuring a Timbre appender
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Logging with Timbre
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Adding an appender
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Summary
4
4. URL Routing and Template Rendering
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4. URL Routing and Template Rendering
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What is Compojure?
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Creating a Compojure route
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What is Selmer?
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Creating your first page
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Editing the home page
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Serving the signup form
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Creating the signup page
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Summary
5
5. Handling Form Input
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5. Handling Form Input
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Handling the form POST
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Validating the form POST
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Summary
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6. Testing in Clojure
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6. Testing in Clojure
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The necessity of testing
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Anatomy of a test
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Writing and running our first test
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Writing a high-level integration test
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Summary
7
7. Getting Started with the Database
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7. Getting Started with the Database
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Creating the database schema
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Maintaining the database schema
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Adding data to the database
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Summary
8
8. Reading Data from the Database
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8. Reading Data from the Database
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Creating the catalog
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Fetching albums from the database
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Creating the recently added route
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Rendering the results
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An exercise!
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Summary
9
9. Database Transactions
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9. Database Transactions
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Introduction to Database Transactions
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The ACID properties
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Importance of database transactions
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Implementing a transaction
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Extending the application requirements in brief
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Summary
10
10. Sessions and Cookies
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10. Sessions and Cookies
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Sessions
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Setting up sessions
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Interacting with the session
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Restricted routes
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Cookies
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Extending the application: brief requirements
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Summary
11
11. Environment Configuration and Deployment
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11. Environment Configuration and Deployment
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Environ
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Setting and resolving environment configurations
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Adjusting the database connection
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Deploying the hipstr application
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Summary
12
A. Using Korma – a Clojure DSL for SQL
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A. Using Korma – a Clojure DSL for SQL
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Getting Korma
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The Quick Korma Crash Course
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Port the models from YeSQL to Korma
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Index
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Index

Chapter 6. Testing in Clojure

Testing is quite possibly the most controversial topic in software development I've ever seen. Some developers are passionate about the merits of automated testing, what should be tested, and how. Conversely, some developers are dead set against automated testing. This can be especially so in languages that come with a REPL. That being said, Clojure still ships with a clojure.test namespace. As such, this chapter will focus primarily on how we can use clojure.test to write tests for our hipstr.validators.user namespace. In this chapter, we will:

  • Explore the necessity of automated testing in Clojure (hint: I believe there is always room for testing)
  • Discuss how to write assertions and tests, and how to run them

    Tip

    What this chapter won't cover, however, is extensive philosophy, patterns, and so on. Automated testing is a huge topic, one that I've studied for over ten years, and still have an enormous amount to learn. The purpose of this...

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