I set up a simple frontend service in JavaScript using Axios. This service takes a list of files and sends to my server code using a post request. My JavaScript looks like this
const testPost = async (files) => {
let formData = new FormData();
files.forEach((file) => {
formData.append("file", file);
});
const res = await axios({
method: "POST",
url: baseUrl,
data: formData,
headers: {
"Content-Type": "multipart/form-data",
},
});
return res;
};
And my Go code looks like this:
func (h *SendHandler) TestPost(w http.ResponseWriter, r *http.Request) {
//Allow CORS here By * or specific origin
w.Header().Set("Access-Control-Allow-Origin", "*")
w.Header().Set("Access-Control-Allow-Headers", "Content-Type")
formdata := r.MultipartForm
fmt.Println(formdata)
}
I think my problem lies in the body of my TestPost function in Go because I click send in my frontend code, I receive a response. In my Go function, when I print my formdata, it outputs <nil>. I want to be able to access each file in the list but I can't even access the formdata. I'm still new to both web dev and Go so there is definitely something I am misunderstanding here. Any pointers?
The documentation for MultipartForm says:
MultipartForm is the parsed multipart form, including file uploads. This field is only available after ParseMultipartForm is called.
Fix by calling ParseMultipartForm before using r.MultipartForm.
err := r.ParseMultipartForm(maxMemory)
if err != nil {
http.Error(w, "Bad Request", http.StatusBadRequest)
return
}
// r.MultipartForm is now set.
fmt.Println(r.MultipartForm) // does not print nil