Can I use jquery post with image uploads? - php

Question

I'm trying to use jquery to submit my form like so but it's not triggering anything in the functions.php file. Do I need to do anything special with a multipart/form-data? Am I missing something?
HTML:
<form id="process_image_form" enctype="multipart/form-data" action="<?php echo htmlspecialchars($_SERVER['PHP_SELF'], ENT_QUOTES); ?>" method="post" >
<input type="hidden" name="image_id1" id="image_id1" />
<table class="bordered-table">
<tbody>
<tr>
<td><input name="file" type="file" id="file"/></td>
</tr>
<tr>
<td><button type="submit" class="btn primary" data-loading-text="Uploading..." id="upload_profile_photo" name="upload_profile_photo">Upload</button></td>
</tr>
</tbody>
</table>
</form>
Jquery call:
$('#upload_profile_photo').click(function(e) {
e.preventDefault();
$.post('gallery/functions.php', $("#process_image_form").serialize(), function(status) {
if (status.st) {
alert("Photo Uploaded");
}
}, "json");
});
functions.php:
if (isset($_POST['upload_profile_photo'])) {
if (isset($_FILES['file']) && $_FILES['file']['size'] > 0) {
//handle file upload
$size = filesize($_FILES['file']['tmp_name']);
if ($size > $max_file_size * 1024 * 1024) {
$res->error = '<div class="alert-message error">Your image file is too large. Reduce its size and try uploading again.</div>';
echo json_encode($res);
exit();
}
if ($res->error == "") {
//process image
$res = uploadImage($_FILES['file']['tmp_name'], $user_id);
if ($res->st) {
unlink($_FILES['file']['tmp_name']);
$res->msg = '<div class="alert-message success">Your profile photo was uploaded successfully!</div>';
echo json_encode($res);
exit();
}
}
}
else {
$res->error = '<div class="alert-message error">Please select a photo to upload.</div>';
echo json_encode($res);
exit();
}
}

Answer 1

jquery serialize method will not work on file inputs. Look here please: How can I upload files asynchronously?
I have a great experience with jquery file upload plugin for this purpose.