golang web dev

Resources for golang web development.

Examples

• render json
• render text
• set headers
• serve a file
• parse an url
• parse a json request
• nesting templates
• multipart-form processing

General

Introductory articles and tutorials

• writing web applications - official golang tutorial

• how i start - tutorial demonstrating how to setup a basic REST API

• quick and clean - multi-part article walking through the creation of a guestbook app (here refactored to use bolt for persistence in place of mongo)

• building your own web framework - very nice series of articles (in 5 parts) describing how to roll-your own custom framework with context-aware handler chains

• recap of request handling - awesome overview … and, in fact, all of Alex Edwards periodic posts on web development with Go are well worth a read

• building web applications - free e-book covering the basics

Forms

• form creation

• form validation

• form processing

  • multipart/form file uploads

Useful packages for creating and processing form data include:

• go-form-it
• gorilla/schema
• binding

Templates

• overview

  • nested

• usage and internals

Authentication

• auth and sessions

Static Content

• example
• serving static sites with go

Middleware

How to share context and functionality

• recap of request handling

• writing http middleware

• making and using http middleware

• http.HandlerFunc wrapping

• http.Handler wrapping

• best practices and examples

If you’re using a middleware pattern to process HTTP requests in Go, you may want to share some data or context between middleware handlers and your application handlers.

• request contexts

• custom handlers avoiding globals

• context aware handler chains

• sharing context

• painless web handlers - sharing context by creating a new handler type with a ServeHTTP method

• basic auth example - with httprouter

• example of decorating a handler and handlefunc with a db

• example of wrapping your handlers with a closure for composiblity.

• example of embedding a mux in an api object

HTTP APIs

For material specifically focused on HTTP API / web service development, see this gist.

Packages

The gorilla web toolkit provides a fairly comprehensive set of web utility packages.

For basic routing, I like httprouter … and, along similar lines, httptreemux.

Both gin-gonic and echo appear to be nice/performant micro-web frameworks.

Other stuff …

• gin - live reloading
• negroni - bidirectional middleware flow
• render - improved templating
• sqlx - convenient extensions to database/sql
• cors - CORS middleware
• goth - multi-provider authentication
• goji - a basic router providing request context
• gorilla/context - registry for global request variables
• go-form-it - easy form creation and handling

Reference

Status Codes

• quick ref

• go constants - e.g., http.StatusOK = 200

Header Fields

• request fields

• response fields