Uploading/inserting images problem

Hi

I’m using codeigniter 2.1.2 and I was busy doing a tutorial called How to Upload Files with CodeIgniter and AJAX, I did everything like it said but it’s not uploading or saving the content.

this is the upload controller


<?php

class Upload extends CI_Controller
{

	public function __construct()
	{
		parent::__construct();
		$this->load->model('files_model');
		$this->load->database();
		$this->load->helper('url');
	}

	public function index()
	{
		$this->load->view('upload');
	}

	public function upload_file()
	{
		$status = "";
		$msg = "";
		$file_element_name = 'userfile';
		
		if (empty($_POST['title']))
		{
			$status = "error";
			$msg = "Please enter a title";
		}
		
		if ($status != "error")
		{
			$config['upload_path'] = './files/';
			$config['allowed_types'] = 'gif|jpg|png|doc|txt';
			$config['max_size']	= 1024 * 8;
			$config['encrypt_name'] = TRUE;

			$this->load->library('upload', $config);

			if (!$this->upload->do_upload($file_element_name))
			{
				$status = 'error';
				$msg = $this->upload->display_errors('', '');
			}
			else
			{
				$data = $this->upload->data();
				$file_id = $this->files_model->insert_file($data['file_name'], $_POST['title']);
				if($file_id)
				{
					$status = "success";
					$msg = "File successfully uploaded";
				}
				else
				{
					unlink($data['full_path']);
					$status = "error";
					$msg = "Something went wrong when saving the file, please try again.";
				}
			}
			@unlink($_FILES[$file_element_name]);
		}
		echo json_encode(array('status' => $status, 'msg' => $msg));
	}
	
	public function files()
	{
		$files = $this->files_model->get_files();
		$this->load->view('files', array('files' => $files));
	}
	
	public function delete_file($file_id)
	{
		if ($this->files_model->delete_file($file_id))
		{
			$status = 'success';
			$msg = 'File successfully deleted';
		}
		else
		{
			$status = 'error';
			$msg = 'Something went wrong when deleteing the file, please try again';
		}
		echo json_encode(array('status' => $status, 'msg' => $msg));
	}

}

This is my files_model


<?php

class Files_Model extends CI_Model {

	public function insert_file($filename, $title)
	{
		$data = array(
			'filename'		=> $filename,
			'title'			=> $title
		);
		$this->db->insert('files', $data);
		return $this->db->insert_id();
	}

	public function delete_file($file_id)
	{
		$file = $this->get_file($file_id);
		if (!$this->db->where('id', $file_id)->delete('files'))
		{
			return FALSE;
		}
		unlink('./files/' . $file->filename);	
		return TRUE;
	}

	public function get_files()
	{
		return $this->db->select()
				->from('files')
				->get()
				->result();
	}

	public function get_file($file_id)
	{
		return $this->db->select()
				->from('files')
				->where('id', $file_id)
				->get()
				->row();
	}

}

This is my upload view


<!doctype html>
<html>
<head>
	<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.6.2/jquery.min.js"></script>
	<script src="<?php echo base_url()?>js/site.js"></script>
	<script src="<?php echo base_url()?>js/ajaxfileupload.js"></script>
	<link href="<?php echo base_url()?>css/style.css" rel="stylesheet" />
</head>
<body>
	<h1>Upload File</h1>
	<p class="error"></p>
	<form method="post" action="<?php echo site_url('/upload/upload')?>" id="upload_file">
		<label for="title">Title</label>
		<br />
		<input type="text" name="title" id="title" value="" />
		<br />
		<label for="userfile">File</label>
		<br />
		<input type="file" name="userfile" id="userfile" size="20" />
		<br />
		<input type="submit" name="submit" id="submit" />
	</form>
	<h2>Files</h2>
	<div id="files"></div>
</body>
</html>

This is my files view


<?php
if (isset($files) && count($files))
{
	?>
		<ul>
			<?php
			foreach ($files as $file)
			{
				?>
				<li class="image_wrap">
					<a href="#" class="delete_file_link" data-file_id="<?php echo $file->id?>">Delete</a>
					<strong><?php echo $file->title?></strong>
					<br />
					<?php echo $file->filename?>
				</li>
				<?php
			}
			?>
		</ul>
	</form>
	<?php
}
else
{
	?>
	<p>No Files Uploaded</p>
	<?php
}
?>

this is site.js


$(function() {
	$('#upload_file').submit(function(e) {
		e.preventDefault();
		$.ajaxFileUpload({
			url 			:'./upload/upload_file/',
			secureuri		:false,
			fileElementId	:'userfile',
			dataType		: 'json',
			data			: {
				'title'				: $('#title').val()
			},
			success	: function (data, status)
			{
				if(data.status != 'error')
				{
					$('#files').html('<p>Reloading files...</p>');
					refresh_files();
					$('#title').val('');
				}
				alert(data.msg);
			}
		});
		return false;
	});

	refresh_files();

	$('.delete_file_link').live('click', function(e) {
		e.preventDefault();
		if (confirm('Are you sure you want to delete this file?'))
		{
			var link = $(this);
			$.ajax({
				url			: './upload/delete_file/' + link.data('file_id'),
				dataType	: 'json',
				success		: function (data)
				{
					if (data.status == "success")
					{
						link.parents('li').fadeOut('fast', function() {
							$(this).remove();
							if ($('#files li').length == 0)
							{
								$('#files').html('<p>No Files Uploaded</p>');
							}
						});
					}
					else
					{
						alert(data.msg);
					}
				}
			});
		}
	});
});

function refresh_files()
{
	$.get('./upload/files/')
	.success(function (data){
		$('#files').html(data);
	});
}

and this is ajaxfileupload.js



jQuery.extend({
	

    createUploadIframe: function(id, uri)
	{
			//create frame
            var frameId = 'jUploadFrame' + id;
            var iframeHtml = '<iframe id="' + frameId + '" name="' + frameId + '" style="position:absolute; top:-9999px; left:-9999px"';
			if(window.ActiveXObject)
			{
                if(typeof uri== 'boolean'){
					iframeHtml += ' src="' + 'javascript:false' + '"';

                }
                else if(typeof uri== 'string'){
					iframeHtml += ' src="' + uri + '"';

                }	
			}
			iframeHtml += ' />';
			jQuery(iframeHtml).appendTo(document.body);

            return jQuery('#' + frameId).get(0);			
    },
    createUploadForm: function(id, fileElementId, data)
	{
		//create form	
		var formId = 'jUploadForm' + id;
		var fileId = 'jUploadFile' + id;
		var form = jQuery('<form  action="" method="POST" name="' + formId + '" id="' + formId + '" enctype="multipart/form-data"></form>');	
		if(data)
		{
			for(var i in data)
			{
				jQuery('<input type="hidden" name="' + i + '" value="' + data[i] + '" />').appendTo(form);
			}			
		}		
		var oldElement = jQuery('#' + fileElementId);
		var newElement = jQuery(oldElement).clone();
		jQuery(oldElement).attr('id', fileId);
		jQuery(oldElement).before(newElement);
		jQuery(oldElement).appendTo(form);


		
		//set attributes
		jQuery(form).css('position', 'absolute');
		jQuery(form).css('top', '-1200px');
		jQuery(form).css('left', '-1200px');
		jQuery(form).appendTo('body');		
		return form;
    },

    ajaxFileUpload: function(s) {
        // TODO introduce global settings, allowing the client to modify them for all requests, not only timeout		
        s = jQuery.extend({}, jQuery.ajaxSettings, s);
        var id = new Date().getTime()
		var form = jQuery.createUploadForm(id, s.fileElementId, (typeof(s.data)=='undefined'?false:s.data));
		var io = jQuery.createUploadIframe(id, s.secureuri);
		var frameId = 'jUploadFrame' + id;
		var formId = 'jUploadForm' + id;		
        // Watch for a new set of requests
        if ( s.global && ! jQuery.active++ )
		{
			jQuery.event.trigger( "ajaxStart" );
		}
        var requestDone = false;
        // Create the request object
        var xml = {}
        if ( s.global )
            jQuery.event.trigger("ajaxSend", [xml, s]);
        // Wait for a response to come back
        var uploadCallback = function(isTimeout)
		{			
			var io = document.getElementById(frameId);
            try
			{				
				if(io.contentWindow)
				{
					 xml.responseText = io.contentWindow.document.body?io.contentWindow.document.body.innerHTML:null;
                	 xml.responseXML = io.contentWindow.document.XMLDocument?io.contentWindow.document.XMLDocument:io.contentWindow.document;
					
				}else if(io.contentDocument)
				{
					 xml.responseText = io.contentDocument.document.body?io.contentDocument.document.body.innerHTML:null;
                	xml.responseXML = io.contentDocument.document.XMLDocument?io.contentDocument.document.XMLDocument:io.contentDocument.document;
				}						
            }catch(e)
			{
				//jQuery.handleError(s, xml, null, e);
				console.log('ERROR', s, xml, null, e);
			}
            if ( xml || isTimeout == "timeout")
			{				
                requestDone = true;
                var status;
                try {
                    status = isTimeout != "timeout" ? "success" : "error";
                    // Make sure that the request was successful or notmodified
                    if ( status != "error" )
					{
                        // process the data (runs the xml through httpData regardless of callback)
                        var data = jQuery.uploadHttpData( xml, s.dataType );
                        // If a local callback was specified, fire it and pass it the data
                        if ( s.success )
                            s.success( data, status );

                        // Fire the global callback
                        if( s.global )
                            jQuery.event.trigger( "ajaxSuccess", [xml, s] );
                    } else {
                        //jQuery.handleError(s, xml, status);
						console.log('ERROR', s, xml, status);
					}
                } catch(e)
				{
                    status = "error";
					console.log('ERROR', s, xml, status, e);
                    //jQuery.handleError(s, xml, status, e);
                }

                // The request was completed
                if( s.global )
                    jQuery.event.trigger( "ajaxComplete", [xml, s] );

                // Handle the global AJAX counter
                if ( s.global && ! --jQuery.active )
                    jQuery.event.trigger( "ajaxStop" );

                // Process result
                if ( s.complete )
                    s.complete(xml, status);

                jQuery(io).unbind()

                setTimeout(function()
									{	try
										{
											jQuery(io).remove();
											jQuery(form).remove();	
											
										} catch(e)
										{
											console.log('ERROR', s, xml, null, e);
											//jQuery.handleError(s, xml, null, e);
										}									

									}, 100)

                xml = null

            }
        }
        // Timeout checker
        if ( s.timeout > 0 )
		{
            setTimeout(function(){
                // Check to see if the request is still happening
                if( !requestDone ) uploadCallback( "timeout" );
            }, s.timeout);
        }
        try
		{

			var form = jQuery('#' + formId);
			jQuery(form).attr('action', s.url);
			jQuery(form).attr('method', 'POST');
			jQuery(form).attr('target', frameId);
            if(form.encoding)
			{
				jQuery(form).attr('encoding', 'multipart/form-data');      			
            }
            else
			{	
				jQuery(form).attr('enctype', 'multipart/form-data');			
            }			
            jQuery(form).submit();

        } catch(e)
		{		
			console.log('ERROR', s, xml, null, e);	
            //jQuery.handleError(s, xml, null, e);
        }
		
		jQuery('#' + frameId).load(uploadCallback	);
        return {abort: function () {}};	

    },

    uploadHttpData: function( r, type ) {
        var data = !type;
        data = type == "xml" || data ? r.responseXML : r.responseText;
        // If the type is "script", eval it in global context
        if ( type == "script" )
            jQuery.globalEval( data );
        // Get the JavaScript object, if JSON is used.
        if ( type == "json" )
            eval( "data = " + data );
        // evaluate scripts within html
        if ( type == "html" )
            jQuery("<div>").html(data).evalScripts();

        return data;
    }
})



I did what you asked and nothing showed up