When working with any form of http communication in Go you’re going to come across scenarios where you need to know a request’s method - whether it’s a GET, POST, etc.

If you’re writing an API with Go you’ll most likely have the incoming request in the form of a http.Request object. This request has Method

package main

import (
    "net/http"
    "io"
)

func main() {
    // Create a basic http example to demonstrate example
    http.Handle("/", http.HandlerFunc(ExampleHandler))
    http.ListenAndServe(":8080", nil)
}

func ExampleHandler(w http.ResponseWriter, r *http.Request) {
    // This handler will run for all types of HTTP request, but we can use r.Method to 
    // determine which method is being used and validate the request based on this.
    if r.Method == http.MethodGet {
        io.WriteString(w, "This is a get request")
    } else if r.Method == http.MethodPost {
        io.WriteString(w, "This is a post request")
    } else {
        io.WriteString(w, "This is a " + r.Method + " request")
    }
}