CODEWITHSUNDEEP
phpjavascriptajax
SeanSS
SeanSS

Reputation: 1

How to use $.ajax() to Upload Files

I get this message when I try to use $_FILES to get the image name.

Notice: Undefined index: image in C:\xampp\htdocs\upload_form\upload_query.php on line 10

I have a form that uploads information about an image to a mysql database (phpmyadmin), and then the form is cleared using JavaScript so that the user can upload another image and information. I have read that you can't use $_FILES as well as JavaScript, but I am unsure why, I would also appreciate a solution.

I am new to php, and JavaScript.

This is the JavaScript.

$('form').on('submit',function() {
var that= $(this),
    url = that.attr('action'),
    type = that.attr('method'),
    data = {};

    that.find('[name]').each(function(index,value) {
           var that = $(this),
           name = that.attr('name'),
           value = that.val();

           data[name] = value;
    });

 $.ajax({
         url: url,
         type: type, 
         data: data,
         success: function(response){
                  console.log(response);
         }
 });
  document.getElementById("upload_form").reset();
return false;
});

This is the php.

 //image properties
 $name   = $_FILES['image']['name'];
 $size   = $_FILES['image']['size'];
 $temp   = $_FILES['image']['tmp_name'];
 $error  = $_FILES['image']['error'];
 $type   = $_FILES['image']['type'];
 //****************

This is part of the form.

<form action='upload_query.php' class='appnitro' enctype='multipart/form-data' id='upload_form' method='post' name='upload_form'>
  <ul>
    <li id='li_1'>
      <label class='description' for='image'>Upload a Picture</label>    
      <div>
        <input class='element file' id='image' name='image' required="" type='file'>
      </div>
    </li>    
    <li id='li_2'><label class='description' for='name'>Name</label> <span><input class='element text' id='first_name' maxlength='255' name='first_name' placeholder='First Name.' required="" size='12' value=''></span> <span><input class='element text' id='last_name' maxlength='255' name='last_name' placeholder='Last Name.' required="" size='18' value=''></span></li>
  </ul>
</form>

etc.

Upvotes: 0

Views: 158

Answers (2)

DevZer0
DevZer0

Reputation: 13535

Yes you can upload files using $.ajax here is how

First let's have a typical form with an id. This form can include your one or many files as you wish. 

<form id='fileupload' method='post' enctype="multipart/form-data" ...

Then in jQuery you do the following. 

$('#btnupload').click(function () {
    //the key is FormData object
    var formData = new FormData(document.getElementById('fileupload'));
    $.ajax({
        url: 'upload.php', //server script to process data
        type: 'POST',
        success: function (json) {}
        data: formData,
        dataType: "json",
        cache: false,
        contentType: false,
        processData: false
    });
});

The key here is using the javascript FormData object to construct the data parameter of $.ajax

Upvotes: 3

Andreyco
Andreyco

Reputation: 22872

You cannot send files using AJAX (not this way).

If you want to send files, take a look at XMLHttpRequest2. Pretty good tutorial is here - http://www.html5rocks.com/en/tutorials/file/xhr2/

Upvotes: -1

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