Laravel 5.4 not able to parse FormData javascript object sent using Jquery Ajax

Question

Lately I've been trying to solve an issue with no luck, basically I'm trying to submit a form to the server using AJAX, the form has files, so I'm using the FormData javascript object in JQuery 1.12. The data arrives to the server but in I way I don't know how to format it.

This is my AJAX function:

function saveMenu(id){
    var formElement = document.getElementById("menu-form");
    var formData = new FormData(formElement);
    formData.append('_method', 'PUT');
    $( "#form-wrapper" ).toggleClass( "be-loading-active" );
    $.ajax({
        type: 'PUT',
        headers: {
            'X-CSRF-TOKEN': $('meta[name="csrf-token"]').attr('content')
        },
        url: "{{url('myUrl')}}",
        data: formData,
        enctype: 'multipart/form-data',
        processData: false,
        success: function(response) {
            toastr.success('Yai! Saved successfully!')
        },
        error: function(response) {
            toastr.error('Oh oh! Something went really wrong!')
        },
        complete: function() {
            $( "#form-wrapper" ).toggleClass( "be-loading-active" )
        }
    });
}

and when I perform a dd($request->all()); in my controller I get something like this:

array:1 [
  "------WebKitFormBoundaryRCIAg1VylATQGx46\r\nContent-Disposition:_form-data;_name" => """
    "_token"\r\n
    \r\n
    jtv4bnn8WQnP3eqmKZV3xWka2YOpnNc1pgrIfk0D\r\n
    ------WebKitFormBoundaryRCIAg1VylATQGx46\r\n
    Content-Disposition: form-data; name="blocks[43][title]"\r\n
    \r\n
...

Things I've tried:

Set the HTTP verb to POST. Same result.
Set the AJAX contentType: false, contentType: application/json. Empty response.
Remove enctype: 'multipart/form-data'. Same response.

Any help is appreciated.

Hmm.. ill try to make a workable instance in my place. did you try this dd($request->_method)? — Romnick Susa, Aug 04 '17 at 10:12
did you remove js cache after removing `nctype: 'multipart/form-data` because I think it is key — online Thomas, Aug 04 '17 at 10:23
if you're not using versions of jQuery prior to 1.9.0. , you should change the ` type: 'PUT'` to ` method: 'PUT'` — Onix, Aug 04 '17 at 10:26
type = post + data: _method = put? https://stackoverflow.com/questions/31631206/method-not-allowed-when-put-used-over-ajax-for-laravel-resource — online Thomas, Aug 04 '17 at 10:29
@ThomasMoors I've already tried to change the verb to POST and I got the same response. IMO it's nothing to do with the client-server communication but with the js object. — Asur, Aug 04 '17 at 10:30

Prinzhillary · Answer 1 · 2017-09-14T17:28:32.530

This fixed it for me

data: form_data,
contentType: false,
processData: false,

processData: false prevents jQuery from parsing the data and throwing an Illegal Invocation error. JQuery does this when it encounters a file in the form and can not convert it to string (serialize it).

contentType: false prevents ajax sending the content type header. The content type header make Laravel handel the FormData Object as some serialized string.

setting both to false made it work for me. I hope this helps.

$('#my-form').submit(function(e) {
        e.preventDefault();
        var api_token = $('meta[name="api-token"]').attr('content');
        form_data = new FormData(this);
        $.ajax({
            type: 'POST',
            url: '/api/v1/item/add',
            headers: {
                Authorization: 'Bearer ' + api_token
            },
            data: form_data,
            contentType: false,
            processData: false,
            success: function(result,status,xhr) {
                console.log(result);
            },
            error: function(xhr, status, error) {
                console.log(xhr.responseText);
            }
        });
    });

also remember to use $request->all(); $request->input() excludes the files

score 1 · Answer 2 · answered Aug 04 '17 at 11:28

I've been trying to debug that for 2 hours and i found out that method PUT is not working with formData properly.

Try changing

type : "PUT"

into

method : "POST"

Then change your method on your backend from put to post and you'll see the difference. I used below codes to test it

$("#menu-form").submit(function (){
    var fd = new FormData();
    fd.append('section', 'general');
    fd.append('action', 'previewImg');
    fd.append('new_image', $('.new_image')[0].files[0]); 
    $.ajax({
        method : 'POST',
        headers: {
            'X-CSRF-TOKEN': '{{ csrf_token()}}'
        },
        url: "{{url('upload-now')}}",
        data : fd,
        contentType: false,
        processData: false,
        success: function(response) {
            console.log(response);
        },
    });
    return false;
});

And in my controller

public function test(Request $request){
    dd($request->all());
}

Ill try to research more about this issue.

Sorry but my form is more complex than just 3 inputs you can comfortably append, it has multiple levels and more files. Anyway I've tried to change to the POST method as I said in the question and it didn't changed for me. — Asur, Aug 04 '17 at 11:31
I have a solution, but I discarted jquery ajax function in favor of `XMLRequest()` — Asur, Aug 04 '17 at 11:33

score 1 · Answer 3 · answered Jun 15 '20 at 03:01

Laravel 7, if use method PUT in ajax, you can follow 1. change method method: 'PUT' to method: 'POST' 2. add formdata.append with _method PUT like this example :

$('#updateBtn').click(function(e){
    e.preventDefault();
    var frm = $('#tambahForm');
    frm.trigger("reset");
    $('.edit_errorNama_kategori').hide();
    $('.edit_errorGambar').hide();
    var url = "/pengurus/category/"+$('#edit_id').val();
    var formdata = new FormData($("#editForm")[0]);
    formdata.append('_method', 'PUT');  //*** here

    $.ajax({                       
        method :'POST', //*** here
        url : url,
        data : formdata,
        dataType : 'json',
        processData: false,
        contentType: false,
        success:function(data){
          if (data.errors) {
            if (data.errors.nama_kategori) {
                $('.edit_errorNama_kategori').show();
                $('.edit_errorNama_kategori').text(data.errors.nama_kategori);
            }
            if (data.errors.gambar){
              $('.edit_errorGambar').show();
              $('.edit_errorGambar').text(data.errors.gambar);
            }
          }else {
            frm.trigger('reset');
            $('#editModal').modal('hide');
            swal('Success!','Data Updated Successfully','success');
            table.ajax.reload(null,false);
          }
        },
        error: function (jqXHR, textStatus, errorThrown) {
          alert('Please Reload to read Ajax');
          console.log("ERROR : ", e);
        }
    });
});

its works for me

score 0 · Accepted Answer · answered Aug 07 '17 at 13:18

Finally I gave up trying to make it work and tried a more vanilla approach, I still don't know the reason why the request is formated like that, but the XMLHttpRequest() function works perfectly and the migration is not a big deal.

The equivalent of the function I posted about would be:

function saveMenu(action){
    var formElement = document.getElementById("menu-form");
    var formData = new FormData(formElement);
    formData.append('_token', $('meta[name="csrf-token"]').attr('content'));

    var request = new XMLHttpRequest();
    request.open("POST", "{{url('myUrl')}}");
    request.send(formData);

    request.onload = function(oEvent) {
      if (request.status == 200) {
        toastr.success('Yai! Saved successfully!');
      } else {
        toastr.error('Oh oh! Something went really wrong!');
      }
      $( "#form-wrapper" ).toggleClass( "be-loading-active" );
    };
}

score 0 · Answer 5 · answered Oct 10 '20 at 06:43

Bit late, but; This will solve your problem;

var formData = new FormData(document.getElementById('form'));
console.log(...formData);

var object = {};
formData.forEach(function (value, key) {
    object[key] = value;
});

Then you can send this object to the server. This is much more readable and works great.

OR

You can simply send this directly;

JSON.stringify(Object.fromEntries(formData));

This is the newer approach. And don't give up :-)

score 0 · Answer 6 · edited Apr 26 '23 at 13:54

if you are getting responses like this

Array ( [------WebKitFormBoundaryZHCPkXfouoiFpLDg Content-Disposition:_form-data;_name] => "mencommentid" 43 ------WebKitFormBoundaryZHCPkXfouoiFpLDg Content-Disposition: form-data; name="mmencommentid" 39 ------WebKitFormBoundaryZHCPkXfouoiFpLDg Content-Disposition: form-data; name="replymencomment" asd ------WebKitFormBoundaryZHCPkXfouoiFpLDg Content-Disposition: form-data; name="video" ------WebKitFormBoundaryZHCPkXfouoiFpLDg Content-Disposition: form-data; name="file"; filename="" Content-Type: application/octet-stream ------WebKitFormBoundaryZHCPkXfouoiFpLDg Content-Disposition: form-data; name="audio"; filename="" Content-Type: application/octet-stream ------WebKitFormBoundaryZHCPkXfouoiFpLDg-- )

then

cache: false,
processData: false,
contentType: false,

adding these inside request helps me

Laravel 5.4 not able to parse FormData javascript object sent using Jquery Ajax

6 Answers6

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