httpin

🍡 HTTP Input for Go - HTTP Request from/to Go Struct (Bi-directional Data Binding between Go Struct and http.Request)

Programming language: Go

License: MIT License

Tags: Forms    

README

httpin - HTTP Input for Go

Decode an HTTP request into a custom struct

Documentation

Core Features

httpin helps you easily decoding HTTP request data from

• Query parameters, e.g. ?name=john&is_member=true
• Headers, e.g. Authorization: xxx
• Form data, e.g. username=john&password=******
• JSON/XML Body, e.g. POST {"name":"john"}
• Path variables, e.g. /users/{username}
• File uploads

You only need to define a struct to receive/bind data from an HTTP request, without writing any parsing stuff code by yourself.

How to use?

type ListUsersInput struct {
    Page     int  `in:"query=page"`
    PerPage  int  `in:"query=per_page"`
    IsMember bool `in:"query=is_member"`
}

func ListUsers(rw http.ResponseWriter, r *http.Request) {
    input := r.Context().Value(httpin.Input).(*ListUsersInput)

    if input.IsMember {
        // Do sth.
    }
    // Do sth.
}

httpin is:

• well documented: at https://ggicci.github.io/httpin/
• open integrated: with net/http, go-chi/chi, gorilla/mux, gin-gonic/gin, etc.
• extensible (advanced feature): by adding your custom directives. Read httpin - custom directives for more details.

Why this package?

Compared with using net/http package

func ListUsers(rw http.ResponseWriter, r *http.Request) {
    page, err := strconv.ParseInt(r.FormValue("page"), 10, 64)
    if err != nil {
        // Invalid parameter: page.
        return
    }
    perPage, err := strconv.ParseInt(r.FormValue("per_page"), 10, 64)
    if err != nil {
        // Invalid parameter: per_page.
        return
    }
    isMember, err := strconv.ParseBool(r.FormValue("is_member"))
    if err != nil {
        // Invalid parameter: is_member.
        return
    }

    // Do sth.
}

Benefits	Before (use net/http package)	After (use ggicci/httpin package)
⌛️ Developer Time	😫 Expensive (too much parsing stuff code)	🚀 Faster (define the struct for receiving input data and leave the parsing job to httpin)
♻️ Code Repetition Rate	😞 High	😍 Lower
📖 Code Readability	😟 Poor	🤩 Highly readable
🔨 Maintainability	😡 Poor	🥰 Highly maintainable

Alternatives

• google/go-querystring: encoding structs into URL query parameters
• gorilla/schema: converts structs to and from form values