package main
import (
"github.com/kataras/iris/v12"
)
// User is just a bindable object structure.
type User struct {
Username string `json:"username"`
Firstname string `json:"firstname"`
Lastname string `json:"lastname"`
City string `json:"city"`
Age int `json:"age"`
}
func main() {
app := iris.New()
app.Logger().SetLevel("debug")
// app.Logger().SetLevel("disable") to disable the logger.
// Define templates using the std html/template engine.
// Parse and load all files inside "./views" folder with ".html" file extension.
// Reload the templates on each request (development mode).
app.RegisterView(iris.HTML("./views", ".html").Reload(true))
// Register custom handler for specific http errors.
app.OnErrorCode(iris.StatusInternalServerError, func(ctx iris.Context) {
// .Values are used to communicate between handlers, middleware.
errMessage := ctx.Values().GetString("error")
if errMessage != "" {
ctx.Writef("Internal server error: %s", errMessage)
return
}
ctx.Writef("(Unexpected) internal server error")
})
app.Use(func(ctx iris.Context) {
ctx.Application().Logger().Infof("Begin request for path: %s", ctx.Path())
ctx.Next()
})
// app.Done(func(ctx iris.Context) {]})
// POST: scheme://mysubdomain.$domain.com/decode
app.Subdomain("mysubdomain.").Post("/decode", func(ctx iris.Context) {})
// Method POST: http://localhost:8080/decode
app.Post("/decode", func(ctx iris.Context) {
var user User
ctx.ReadJSON(&user)
ctx.Writef("%s %s is %d years old and comes from %s", user.Firstname, user.Lastname, user.Age, user.City)
})
// Method GET: http://localhost:8080/encode
app.Get("/encode", func(ctx iris.Context) {
doe := User{
Username: "Johndoe",
Firstname: "John",
Lastname: "Doe",
City: "Neither FBI knows!!!",
Age: 25,
}
ctx.JSON(doe)
})
// Method GET: http://localhost:8080/profile/anytypeofstring
app.Get("/profile/{username:string}", profileByUsername)
usersRoutes := app.Party("/users", logThisMiddleware)
{
// Method GET: http://localhost:8080/users/42
usersRoutes.Get("/{id:int min(1)}", getUserByID)
// Method POST: http://localhost:8080/users/create
usersRoutes.Post("/create", createUser)
}
app.Get("/", func(ctx iris.Context) {
ctx.HTML("")
for _, link := range []string{"/encode", "/profile/username", "/users/42"} {
ctx.HTML(`- %s
`, link, link)
}
ctx.HTML("
")
})
// Listen for incoming HTTP/1.x & HTTP/2 clients on localhost port 8080.
app.Listen(":8080", iris.WithCharset("utf-8"))
}
func logThisMiddleware(ctx iris.Context) {
ctx.Application().Logger().Infof("Path: %s | IP: %s", ctx.Path(), ctx.RemoteAddr())
// .Next is required to move forward to the chain of handlers,
// if missing then it stops the execution at this handler.
ctx.Next()
}
func profileByUsername(ctx iris.Context) {
// .Params are used to get dynamic path parameters.
username := ctx.Params().Get("username")
ctx.ViewData("Username", username)
// renders "./views/user/profile.html"
// with {{ .Username }} equals to the username dynamic path parameter.
if err := ctx.View("user/profile.html"); err != nil {
ctx.HTML("%s
", err.Error())
return
}
}
func getUserByID(ctx iris.Context) {
userID := ctx.Params().Get("id") // Or convert directly using: .Values().GetInt/GetInt64 etc...
// your own db fetch here instead of user :=...
user := User{Username: "username" + userID}
ctx.XML(user)
}
func createUser(ctx iris.Context) {
var user User
err := ctx.ReadForm(&user)
if err != nil {
ctx.Values().Set("error", "creating user, read and parse form failed. "+err.Error())
ctx.StatusCode(iris.StatusInternalServerError)
return
}
// renders "./views/user/create_verification.html"
// with {{ . }} equals to the User object, i.e {{ .Username }} , {{ .Firstname}} etc...
ctx.ViewData("", user)
if err := ctx.View("user/create_verification.html"); err != nil {
ctx.HTML("%s
", err.Error())
return
}
}