DZone Snippets: file upload code

AJAX file upload

justas (Justas) — Wed, 06 Jun 2007 19:01:43 GMT

Ever wanted to upload files using AJAX like in GMAIL, without reloading the page? Now you can. Cross browser method to upload files using AJAX in only 1Kb of code.
How to use AJAX file upload you can find on this script homepage - free code and tutorials website.



/**

*

*  AJAX IFRAME METHOD (AIM)

*  http://www.webtoolkit.info/

*

**/



AIM = {



	frame : function(c) {



		var n = 'f' + Math.floor(Math.random() * 99999);

		var d = document.createElement('DIV');

		d.innerHTML = '';

		document.body.appendChild(d);



		var i = document.getElementById(n);

		if (c && typeof(c.onComplete) == 'function') {

			i.onComplete = c.onComplete;

		}



		return n;

	},



	form : function(f, name) {

		f.setAttribute('target', name);

	},



	submit : function(f, c) {

		AIM.form(f, AIM.frame(c));

		if (c && typeof(c.onStart) == 'function') {

			return c.onStart();

		} else {

			return true;

		}

	},



	loaded : function(id) {

		var i = document.getElementById(id);

		if (i.contentDocument) {

			var d = i.contentDocument;

		} else if (i.contentWindow) {

			var d = i.contentWindow.document;

		} else {

			var d = window.frames[id].document;

		}

		if (d.location.href == "about:blank") {

			return;

		}



		if (typeof(i.onComplete) == 'function') {

			i.onComplete(d.body.innerHTML);

		}

	}



}

FILE UPLOADING WITH UNIQUE NAME

sur () — Thu, 06 Jul 2006 11:54:16 GMT



src_filename = params[:file][:name] 

if !src_filename.original_filename.empty? 

  hashed_name = Digest::SHA1.hexdigest(Time.now.to_s) 

  filename = "#{RAILS_ROOT}/public/attachments/" + hashed_name + "_" + src_filename.original_filename 

  if File.open(filename, 'w'){ |f| f.write(src_filename.read) }  

     attachment = Attachment.new 

     attachment.name = src_filename.original_filename 

     attachment.hashed_name = hashed_name 

     attachment.size = src_filename.size 

     comment.attachments << attachment 

  end  

end

uploader.func.php

mjlintz () — Thu, 04 May 2006 23:46:30 GMT

// Uploader.func.php, called by: uploader();



function uploader($num_of_uploads=1, $file_types_array=array("mp3"), $max_file_size=10485760, $upload_dir="../mp3s/"){

  if(!is_numeric($max_file_size)){

   $max_file_size = 10485760;  // 10MB

  }

  if(!isset($_POST["submitted"])){

   $form = "";

   $form .= "Artist:
";

   $form .= "Song:
";

   $form .= "Genre:
";

   $form .= "

MP3: "; // Upload files: "; for($x=0;$x<$num_of_uploads;$x++){ $form .= " "; } $form .= " Depending on the size of the MP3, this may take several minutes! Valid file type(s): "; for($x=0;$x if($x $form .= $file_types_array[$x].", "; }else{ $form .= $file_types_array[$x]."."; } } $form .= ""; echo($form); }else{ foreach($_FILES["file"]["error"] as $key => $value){ if($_FILES["file"]["name"][$key]!=""){ if($value==UPLOAD_ERR_OK){ $origfilename = $_FILES["file"]["name"][$key]; $filename = explode(".", $_FILES["file"]["name"][$key]); $filenameext = $filename[count($filename)-1]; unset($filename[count($filename)-1]); $filename = implode(".", $filename); // $filename = substr($filename, 0, 15).".".$filenameext; $date = date("mdY"); $time = date("His"); // $artist = $_POST['artist']; // $song = $_POST['song']; $filename = $date.$time.".".$filenameext; // $filename = $artist."-".$song.".".$filenameext; $file_ext_allow = FALSE; for($x=0;$x if($filenameext==$file_types_array[$x]){ $file_ext_allow = TRUE; } } if($file_ext_allow){ if($_FILES["file"]["size"][$key]<$max_file_size){ if(move_uploaded_file($_FILES["file"]["tmp_name"][$key], $upload_dir.$filename)){ // $mp3_upload = $_FILES['mp3_name']; $file_size = $_FILES['file']['size'][$key]; // $date = date("mdY"); //$time = date("His"); //$mp3_dir = "mp3"; $filename = $date.$time.".mp3"; // Store the orignal file //copy($mp3_upload, $mp3_dir."/".$filename); $query = "INSERT INTO music_archives SET " ." artist='".addslashes($_POST['artist'])."'" .", song='".addslashes($_POST['song'])."'" .", genre='".addslashes($_POST['genre'])."'" .", mp3_name='$filename'" .", mp3_size='$file_size'" .", entry=now()"; $result = mysql_query($query) or die("Error: ".mysql_error()); ?> // echo("File uploaded successfully. - ".$filename." "); }else{ echo($origfilename." was not successfully uploaded "); } }else{ echo($origfilename." was too big, not uploaded "); } }else{ echo($origfilename." had an invalid file extension, not uploaded "); } }else{ echo($origfilename." was not successfully uploaded "); } } } } } ?>