upload multiple files with Varien_File_Uploader

Question

This question is related to my previous question where I'd created a tab form in admin using a template file. The content of template file is:

<div class="entry-edit">
 <div class="entry-edit-head">
 <h4 class="icon-head head-edit-form fieldset-legend">Images</h4>
 </div>
 <div class="fieldset">
 <div class="hor-scroll">
 <table class="form-list container">
 <tr class="wrapper-tr">
 <td class="value">
 <input type="file" name="images[]"/>
 </td>
 <td class="label">
 <span class="remove">Remove</span>
 </td>
 </tr>
 </table>
 <input type="button" class="add" value="Add Image"/>
 </div>
 </div>
</div>
<script>
 jQuery(document).ready(function() {
 jQuery('.add').click(function() {
 var wrapper = "<tr class='wrapper-tr'>" +
 "<td class='value'><input type='file' name='images[]'></td>" +
 "<td class='label'><span class='remove'>Remove</span></td>" +
 "</tr>";
 jQuery(wrapper).find('.remove').on('click', function() {
 jQuery(this).parent('.wrapper-tr').remove();
 });
 jQuery(wrapper).appendTo('.container');
 });
 jQuery('.container').on('click', 'span.remove', function() {
 if (jQuery('.wrapper-tr').length > 1) {
 jQuery(this).parents('.wrapper-tr').remove();
 } else {
 alert('at least one image need to be selected');
 }
 });
 });
</script>

for uploading multiple files.

But as my input type name is images[] that's why in my controller's saveAction() I'm unable to upload file using Varien_File_Uploader as:

$uploader = new Varien_File_Uploader('images');

what value should I pass in Varien_File_Uploader constructor in order to be able to upload file?

Update
I tried logging and found this warning:

Warning: file_exists() expects parameter 1 to be a valid path, array given in /var/www/mageqb/lib/Varien/File/Uploader.php on line 150

Code in my controller is:

foreach ($_FILES['images']['name'] as $key => $image) {
 Mage::log('looping');
 if (empty($image)) {
 Mage::log('continue');
 continue;
 }
 try {
 Mage::log('uploading');
 $uploader = new Varien_File_Uploader('images');
 // Any extention would work
 $uploader->setAllowedExtensions(array('jpg', 'jpeg', 'gif', 'png'));
 $uploader->setAllowRenameFiles(true);
 $uploader->setFilesDispersion(false);
 $path = Mage::getBaseDir('media') . DS . 'authors' . DS;
 $img = $uploader->save($path, $_FILES['images']['name'][$key]);
 Mage::log($img['file']);
 } catch (Exception $e) {
 echo $e->getMessage();
 Mage::log($e->getMessage());
 }
}

Answer 1

this is the expected code

$uploader = new Varien_File_Uploader(
 array(
 'name' => $_FILES['images']['name'][$key],
 'type' => $_FILES['images']['type'][$key],
 'tmp_name' => $_FILES['images']['tmp_name'][$key],
 'error' => $_FILES['images']['error'][$key],
 'size' => $_FILES['images']['size'][$key]
 )
);

• Akhil Gupta: What is the $key in this?
• Jenith Samuel: I tried above code but only one file is uploaded.can you please help
• Mohammad Faisal: @J.Jenith: perhaps, you have got only one item in $_FILES. can you verify the size of array received at your end?
• Jenith Samuel: Thanks , yes i got one item but i upload multiple files jQuery('#front_files input[type="file"]').each(function(index){ var file_id = jQuery(this).attr("id"); file_data = jQuery(this)[0].files; // get multiple files from input file if(file_data.length >0 ){ formdata.append('upload_artworks', file_data[0]); // we can put more than 1 image file } });
• Mohammad Faisal: @J.Jenith: so this is clearly a JavaScript issue where in your data:{collection: files} you have just one item. Its better you should ask a new question for the same.