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package main
import "github.com/kataras/iris"
func main() {
app := iris.New()
// or app.Use(before) and app.Done(after).
app.Get("/", before, mainHandler, after)
// Use registers a middleware(prepend handlers) to all party's, and its children that will be registered
// after.
//
// (`app` is the root children so those use and done handlers will be registered everywhere)
app.Use(func(ctx iris.Context) {
println(`before the party's routes and its children,
but this is not applied to the '/' route
because it's registered before the middleware, order matters.`)
ctx.Next()
})
app.Done(func(ctx iris.Context) {
println("this is executed always last, if the previous handler calls the `ctx.Next()`, it's the reverse of `.Use`")
message := ctx.Values().GetString("message")
println("message: " + message)
})
app.Get("/home", func(ctx iris.Context) {
ctx.HTML("<h1> Home </h1>")
ctx.Values().Set("message", "this is the home message, ip: "+ctx.RemoteAddr())
ctx.Next() // call the done handlers.
})
child := app.Party("/child")
child.Get("/", func(ctx iris.Context) {
ctx.Writef(`this is the localhost:8080/child route.
All Use and Done handlers that are registered to the parent party,
are applied here as well.`)
ctx.Next() // call the done handlers.
})
app.Run(iris.Addr(":8080"))
}
func before(ctx iris.Context) {
shareInformation := "this is a sharable information between handlers"
requestPath := ctx.Path()
println("Before the mainHandler: " + requestPath)
ctx.Values().Set("info", shareInformation)
ctx.Next() // execute the next handler, in this case the main one.
}
func after(ctx iris.Context) {
println("After the mainHandler")
}
func mainHandler(ctx iris.Context) {
println("Inside mainHandler")
// take the info from the "before" handler.
info := ctx.Values().GetString("info")
// write something to the client as a response.
ctx.HTML("<h1>Response</h1>")
ctx.HTML("<br/> Info: " + info)
ctx.Next() // execute the "after".
}
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