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Home > Web Development > Web Programming > Go Web Development Cookbook
Go Web Development Cookbook
Go Web Development Cookbook

Go Web Development Cookbook: Build full-stack web applications with Go

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Profile Icon Arpit Aggarwal
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€20.98 €29.99
Full star icon Full star icon Full star icon Empty star icon Empty star icon 3 (2 Ratings)
eBook Apr 2018 338 pages 1st Edition
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Arrow left icon
Profile Icon Arpit Aggarwal
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€20.98 €29.99
Full star icon Full star icon Full star icon Empty star icon Empty star icon 3 (2 Ratings)
eBook Apr 2018 338 pages 1st Edition
eBook
€20.98 €29.99
Paperback
€36.99
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Go Web Development Cookbook

Working with Templates, Static Files, and HTML Forms

In this chapter, we will cover the following recipes:

  • Creating your first template
  • Serving static files over HTTP
  • Serving static files over HTTP using Gorilla Mux
  • Creating your first HTML form
  • Reading your first HTML form
  • Validating your first HTML form
  • Uploading your first file

Introduction

Quite often, we would like to create HTML forms to get the information from a client in a specified format, upload files or folders to the server, and generate generic HTML templates, rather than repeating the same static text. With the knowledge of the concepts covered in this chapter, we will be able to implement all these functionalities efficiently in Go.

In this chapter, we will start with creating a basic template and then move on to serve static files, such as .js, .css, and images from a filesystem, and eventually create, read, and validate HTML forms and upload a file to the server.

Creating your first template

Templates allow us to define placeholders for dynamic content that can be replaced with the values at runtime by a template engine. They can then be transformed into an HTML file and sent to the client. Creating templates in Go is fairly easy using Go's html/template package, which we will be covering in this recipe.

How to do it...

In this recipe, we are going to create a first-template.html with a couple of placeholders whose value will be injected by the template engine at runtime. Perform the following steps:

  1. Create first-template.html inside the templates directory by executing the following Unix command:
$ mkdir templates && cd templates && touch first-template.html...

Serving static files over HTTP

While designing web applications, it’s always a best practice to serve static resources, such as .js, .css, and images from the filesystem, or any content delivery network (CDN), such as Akamai or Amazon CloudFront, rather than serving it from the web server. This is because all these types of files are static and do not need to be processed; so why should we put extra load on the server? Moreover, it helps to boost application performance, as all the requests for the static files will be served from external sources and therefore reduce the load on the server.

Go's net/http package is sufficient enough for serving static resources from the filesystem through FileServer, which we will be covering in this recipe.

Getting ready...

...

Serving static files over HTTP using Gorilla Mux

In the previous recipe, we served static resources through Go's HTTP file server. In this recipe, we will look at how we can serve it through the Gorilla Mux router, which is also one of the most common ways of creating an HTTP router.

Getting ready...

As we have already created a template which serves main.css from the static/css directory present on the filesystem in our previous recipe, we will just update it to use the Gorilla Mux router.

How to do it...

  1. Install the github.com/gorilla/mux package using the go get...

Creating your first HTML form

Whenever we want to collect the data from the client and send it to the server for processing, implementing an HTML form is the best choice. We will be covering this in this recipe.

How to do it...

In this recipe, we will create a simple HTML form that has two input fields and a button to submit the form. Perform the following steps:

  1. Create login-form.html inside the templates directory, as follows:
$ mkdir templates && cd templates && touch login-form.html
  1. Copy the following content to login-form.html:
<html>
  <head>
    <title>First Form</title>
  </head>
  <body>
    <h1>Login</h1>
    <form method="post" action=&quot...

Reading your first HTML form

Once an HTML form is submitted, we have to read the client data on the server side to take an appropriate action. We will be covering this in this recipe.

Getting ready...

Since we have already created an HTML form in our previous recipe, we will just extend the recipe to read its field values.

How to do it...

  1. Install the github.com/gorilla/schema package using the go get command, as follows:
$ go get github.com/gorilla/schema
  1. Create html-form-read.go, where we will read an HTML form field after decoding it using the github.com/gorilla/schema...

Validating your first HTML form

Most of the time, we have to validate a client's input before processing it, which can be achieved through the number of external packages in Go, such as gopkg.in/go-playground/validator.v9, gopkg.in/validator.v2, and github.com/asaskevich/govalidator.

In this recipe, we will be working with the most famous and commonly used validator, github.com/asaskevich/govalidator, to validate our HTML form.

Getting ready...

As we have already created and read an HTML form in our previous recipe, we will just extend it to validate its field values.

How to do it...

...

Uploading your first file

One of the most common scenarios in any web application is uploading a file or a folder to the server. For example, if we are developing a job portal, then we may have to provide an option where the applicant can upload their profile/resume, or, let's say, we have to develop an e-commerce website with a feature where the customer can upload their orders in bulk using a file.

Achieving the functionality to upload a file in Go is quite easy using its built-in packages, which we will be covering in this recipe.

How to do it...

In this recipe, we are going to create an HTML form with a field of type file, which lets the user pick one or more files to upload to a server via a form submission. Perform...

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Key benefits

  • •Become proficient in RESTful web services
  • •Build scalable, high-performant web applications in Go
  • •Get acquainted with Go frameworks for web development

Description

Go is an open source programming language that is designed to scale and support concurrency at the language level. This gives you the liberty to write large concurrent web applications with ease. From creating web application to deploying them on Amazon Cloud Services, this book will be your one-stop guide to learn web development in Go. The Go Web Development Cookbook teaches you how to create REST services, write microservices, and deploy Go Docker containers. Whether you are new to programming or a professional developer, this book will help get you up to speed with web development in Go. We will focus on writing modular code in Go; in-depth informative examples build the base, one step at a time. You will learn how to create a server, work with static files, SQL, NoSQL databases, and Beego. You will also learn how to create and secure REST services, and create and deploy Go web application and Go Docker containers on Amazon Cloud Services. By the end of the book, you will be able to apply the skills you've gained in Go to create and explore web applications in any domain.

Who is this book for?

This book is for Go developers interested in learning how to use Go to build powerful web applications. A background in web development is expected.

What you will learn

  • Create a simple HTTP and TCP web server and understand how it works
  • Explore record in a MySQL and MongoDB database
  • Write and consume RESTful web service in Go
  • Invent microservices in Go using Micro – a microservice toolkit
  • Create and Deploy the Beego application with Nginx
  • Deploy Go web application and Docker containers on an AWS EC2 instance

Product Details

Country selected
Publication date, Length, Edition, Language, ISBN-13
Publication date : Apr 23, 2018
Length: 338 pages
Edition : 1st
Language : English
ISBN-13 : 9781787288560
Vendor :
Google
Category :
Web Development
Languages :
Go
Concepts :
Web Programming
Tools :
Docker

What do you get with eBook?

Product feature icon Instant access to your Digital eBook purchase
Product feature icon Download this book in EPUB and PDF formats
Product feature icon Access this title in our online reader with advanced features
Product feature icon DRM FREE - Read whenever, wherever and however you want

Product Details

Publication date : Apr 23, 2018
Length: 338 pages
Edition : 1st
Language : English
ISBN-13 : 9781787288560
Vendor :
Google
Category :
Web Development
Languages :
Go
Concepts :
Web Programming
Tools :
Docker

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Table of Contents

12 Chapters
Creating Your First Server in Go Chevron down icon Chevron up icon
Creating Your First Server in Go
Introduction
Creating a simple HTTP server
Implementing basic authentication on a simple HTTP server
Optimizing HTTP server responses with GZIP compression
Creating a simple TCP server
Reading data from a TCP connection
Writing data to a TCP connection
Implementing HTTP request routing
Implementing HTTP request routing using Gorilla Mux
Logging HTTP requests
Working with Templates, Static Files, and HTML Forms Chevron down icon Chevron up icon
Working with Templates, Static Files, and HTML Forms
Introduction
Creating your first template
Serving static files over HTTP
Serving static files over HTTP using Gorilla Mux
Creating your first HTML form
Reading your first HTML form
Validating your first HTML form
Uploading your first file
Working with Sessions, Error Handling, and Caching in Go Chevron down icon Chevron up icon
Working with Sessions, Error Handling, and Caching in Go
Introduction
Creating your first HTTP session
Managing your HTTP session using Redis
Creating your first HTTP cookie
Implementing caching in Go
Implementing HTTP error handling in Go
Implementing login and logout in web application
Writing and Consuming RESTful Web Services in Go Chevron down icon Chevron up icon
Writing and Consuming RESTful Web Services in Go
Introduction
Creating your first HTTP GET method
Creating your first HTTP POST method
Creating your first HTTP PUT method
Creating your first HTTP DELETE method
Versioning your REST API
Creating your first REST client
Creating your first AngularJS Client
Creating your first ReactJS client
Creating your first VueJS client
Working with SQL and NoSQL Databases Chevron down icon Chevron up icon
Working with SQL and NoSQL Databases
Introduction
Integrating MySQL and Go
Creating your first record in MySQL
Reading records from MySQL
Updating your first record in MySQL
Deleting your first record from MySQL
Integrating MongoDB and Go
Creating your first document in MongoDB
Reading documents from MongoDB
Updating your first document in MongoDB
Deleting your first document from MongoDB
Writing Microservices in Go Using Micro – a Microservice Toolkit Chevron down icon Chevron up icon
Writing Microservices in Go Using Micro – a Microservice Toolkit
Introduction
Creating your first protocol buffer
Spinning up a microservice discovery client
Creating your first microservice
Creating your second microservice
Creating your Micro API
Interacting with microservices using a command-line interface and web UI
Working with WebSocket in Go Chevron down icon Chevron up icon
Working with WebSocket in Go
Introduction
Creating your first WebSocket server
Creating your first WebSocket client
Debugging your first local WebSocket server
Debugging your first remote WebSocket server
Unit testing your first WebSocket server
Working with the Go Web Application Framework – Beego Chevron down icon Chevron up icon
Working with the Go Web Application Framework – Beego
Introduction
Creating your first project using Beego
Creating your first controller and router
Creating your first view
Creating your first session variable
Creating your first filter
Handling HTTP errors in Beego
Implementing caching in Beego
Monitoring the Beego application
Deploying the Beego application on a local machine
Deploying the Beego application with Nginx
Working with Go and Docker Chevron down icon Chevron up icon
Working with Go and Docker
Introduction
Building your first Go Docker image
Running your first Go Docker container
Pushing your Docker image to the Docker Registry
Creating your first user-defined bridge network
Running a MySQL Docker image on a user-defined bridge network
Building a Go web application Docker image
Running a web application Docker container linked with a MySQL Docker container on a user-defined bridge network
Securing a Go Web Application Chevron down icon Chevron up icon
Securing a Go Web Application
Introduction
Creating a private key and SSL certificate using OpenSSL
Moving an HTTP server to HTTPS
Defining REST APIs and routes
Creating a JSON web token
Securing a RESTful service using a JSON web token
Preventing cross-site request forgery in Go web applications
Deploying a Go Web App and Docker Containers to AWS Chevron down icon Chevron up icon
Deploying a Go Web App and Docker Containers to AWS
Introduction
Creating your first EC2 instance to run a Go web application
Interacting with your first EC2 instance
Creating, copying, and running a Go web application on your first EC2 instance
Setting up an EC2 instance to run a Docker container
Pulling a Docker image on an AWS EC2 instance from Docker Hub
Running your Go Docker container on an EC2 instance
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Customer reviews

Rating distribution
Full star icon Full star icon Full star icon Empty star icon Empty star icon 3
(2 Ratings)
5 star 50%
4 star 0%
3 star 0%
2 star 0%
1 star 50%
Shashank Jun 05, 2018
Full star icon Full star icon Full star icon Full star icon Full star icon 5
Go Web Development Cookbook is a fantastic resource for enterprise Go developers. Though easy to follow steps it takes you on a journey to deploy Go web application and Docker containers on Amazon Cloud Services.I specially like the chapter about Securing a Go Web Application where Arpit explained with the code how to move HTTP server to HTTPS, secure REST endpoints using JWT and prevent Cross-Site Request Forgery in Go Web Application.If you are a Go developer looking for a deep dive into the Go world, picking this book is a non brainer.
Amazon Verified review Amazon
TeeBee Dec 06, 2019
Full star icon Empty star icon Empty star icon Empty star icon Empty star icon 1
This is a very poor effort. If you already know (even beginner) Go you don't need this book. If you don't know any Go this is not the place to start. Everything in it is easily available online and is usually more clearly presented - here, coverage is very shallow with no rigour and virtually no explanation. Many important topics are not covered at all. Something much better could be put together in a couple of weeks. To be avoided.
Amazon Verified review Amazon

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About the author

Profile icon Arpit Aggarwal
Arpit Aggarwal
Github icon
Arpit Aggarwal is a programmer with over 7 years of industry experience in software analysis, design, effort estimation, development, troubleshooting, testing, and supporting web applications. He is among the top contributors of StackOverflow with more than 9,000 reputation and more than 100 badges in multiple areas such as Java, Scala, Go, Spring, Spring-MVC, GiT, Angular, Unit Testing, Web Services, and Docker, and has written many technical articles for Java Code Geeks, System Code Geeks, Web Code Geeks, and DZone.
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