• v1 has been released
• Read the blog post 'API responses in Go' for an in-depth overview

Get it:

go get gopkg.in/matryer/respond.v1

Import it:

import (
  "gopkg.in/matryer/respond.v1"
)

Use it:

respond.With(w, r, http.StatusOK, data)

Package respond provides low-touch API responses for Go data services.

• Idiomatic way of responding to data APIs using respond.With
• Use respond.With to respond with default options, or make a respond.Options for advanced features
• Encoder abstraction lets you easily speak different formats
• Before and After function fields allow you to envelope and mutate data, set common HTTP headers, log activity etc.
• Protected against multiple responses

The simplest use of respond is to just call respond.With inside your handlers:

func handleSomething(w http.ResponseWriter, r *http.Request) {
	
	data, err := loadFromDB()
	if err != nil {

		// respond with an error
		respond.With(w, r, http.StatusInternalServerError, err)
		return // always return after responding

	}

	// respond with OK, and the data
	respond.With(w, r, http.StatusOK, data)

}

To tweak the behaviour of respond.With you can wrap the handler with a respond.Options:

func main() {
	
	opts := &respond.Options{
		// options go here
	}
	http.Handle("/foo", opts.Handler(fooHandler))
	log.Fatal(http.ListenAndServe(":8080", nil))

}

Use respond.With as normal.

For a complete list of options, see the API documentation for respond.Options.