Hello, Joseph,
I'm trying to make a file upload form, but get this annoying error and hope you can help to resolve it:
Your token expired, click here to try again.
And when I try again, I still get the same error.
routes:
r.GET("/upload/photo/", hr.Handler(alice.
New(acl.DisallowAnon).
ThenFunc(controller.UploadPhotoGET)))
r.POST("/upload/photo/", hr.Handler(alice.
New(acl.DisallowAnon).
ThenFunc(controller.UploadPhotoPOST)))
controllers:
func UploadPhotoGET(w http.ResponseWriter, r *http.Request) {
sess := session.Instance(r)
// Display the view
v := view.New(r)
v.Name = "article/upload"
v.Vars["token"] = csrfbanana.Token(w, r, sess)
v.Render(w)
}
func UploadPhotoPOST(w http.ResponseWriter, r *http.Request) {
//handle photo upload
var filename string
file, header, err := r.FormFile("uploadfile")
if err != nil {
log.Println(err)
}
if header.Filename == "" {
fmt.Println("\n\n NO file uploaded")
} else {
data, err := ioutil.ReadAll(file)
if err != nil {
io.WriteString(w, err.Error())
return
}
filename = path.Join("static/pics" + utils.RandString(5) + path.Ext(header.Filename))
err = ioutil.WriteFile(filename, data, 0777)
if err != nil {
io.WriteString(w, err.Error())
return
}
//resize photo
filetoopen := filename
img, err := imaging.Open(filetoopen)
if err != nil {
panic(err)
}
picname := filename
thumbnail := imaging.Resize(img, 620, 0, imaging.Lanczos)
// save cropped image
err = imaging.Save(thumbnail, picname)
if err != nil {
fmt.Println(err)
}
}
// Display the view
v := view.New(r)
v.Name = "article/upload"
v.Vars["message"] = "message"
v.Vars["url"] = filename
v.Render(w)
}
template:
{{define "title"}}Upload Photo{{end}}
{{define "head"}}{{end}}
{{define "content"}}
<div>
<div>
<h3>Add Photo</h3>
</div>
{{if .prompt}}
{{.prompt}}
{{end}}
<br>
{{if .url}}
{{.url}}
{{end}}
<form action="/upload/photo/" id="form" method="post" enctype="multipart/form-data">
<input type="file" name="uploadfile" />
<br>
<a title="Save" onclick="document.getElementById('form').submit();"> Submit
</a>
</form>
</div>
{{end}}
{{define "foot"}}{{end}}
I tried to removing acl.DisallowAnon middleware from the routes, but it had no effect.
I don't get the error when I submit other forms:
It may worth mentioning that I invoke /upload/photo from within a form update page, from a toolbar icon:
<a href="/upload/photo/" target="_blank">
<span class="fa fa-picture-o fa-lg"></span>
</a>
This bugs me for many hours. Really appreciate your hints.
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