Add More Examples & Categorized in Folders & TOC

Former-commit-id: ce4d711a75a4ba08ffab075e6baa88724725885b

_examples/examples/intermediate/upload-files/main.go

@@ -0,0 +1,69 @@
+package main
+
+import (
+	"crypto/md5"
+	"fmt"
+	"io"
+	"os"
+	"strconv"
+	"time"
+
+	"gopkg.in/kataras/iris.v6"
+	"gopkg.in/kataras/iris.v6/adaptors/httprouter"
+	"gopkg.in/kataras/iris.v6/adaptors/view"
+)
+
+func main() {
+	app := iris.New()
+	app.Adapt(iris.DevLogger())
+	app.Adapt(httprouter.New())
+	app.Adapt(view.HTML("./templates", ".html"))
+
+	// Serve the form.html to the user
+	app.Get("/upload", func(ctx *iris.Context) {
+		//create a token (optionally)
+
+		now := time.Now().Unix()
+		h := md5.New()
+		io.WriteString(h, strconv.FormatInt(now, 10))
+		token := fmt.Sprintf("%x", h.Sum(nil))
+		//render the form with the token for any use you like
+		ctx.Render("upload_form.html", token)
+	})
+
+	// Handle the post request from the upload_form.html to the server
+	app.Post("/upload", iris.LimitRequestBodySize(10<<20),
+		func(ctx *iris.Context) {
+			// or use ctx.SetMaxRequestBodySize(10 << 20)
+			//to limit the uploaded file(s) size.
+
+			// Get the file from the request
+			file, info, err := ctx.FormFile("uploadfile")
+
+			if err != nil {
+				ctx.HTML(iris.StatusInternalServerError,
+					"Error while uploading: <b>"+err.Error()+"</b>")
+				return
+			}
+
+			defer file.Close()
+			fname := info.Filename
+
+			// Create a file with the same name
+			// assuming that you have a folder named 'uploads'
+			out, err := os.OpenFile("./uploads/"+fname,
+				os.O_WRONLY|os.O_CREATE, 0666)
+
+			if err != nil {
+				ctx.HTML(iris.StatusInternalServerError,
+					"Error while uploading: <b>"+err.Error()+"</b>")
+				return
+			}
+			defer out.Close()
+
+			io.Copy(out, file)
+		})
+
+	// start the server at 127.0.0.1:8080
+	app.Listen(":8080")
+}