I have a small drag and drop file upload app that I was looking to rewrite using Python on App Engine, and plan to save files on Google Cloud Storage. The problem is, I can't figure out how (or if) I can save files in Python. Currently, when the user drags a file into the upload area, Javascript acts on it and sends it off to a PHP file. There I can then save the file to a specific directory on a server by doing something like this:
$tmp_name = $_FILES['file']['tmp_name'];
$name = $_FILES['file']['name'];
move_uploaded_file($tmp_name, getcwd()."/".$name);
My question is, can I use Python to replace the PHP? If so, what am I looking for, as I haven't been able to find anything on this topic. I understand that I cannot save files to App Engine and will be using Google Cloud Storage. How can I do this? Is there a generic way to do this assuming I'm on my own server? Thanks!
Edit: Ignoring the drag and drop portion, can I simply use html to have users browse for a file on their desktop but use Python to take that file and save it somewhere?
As mentioned you wont be able to save the file to the filesystem but you can store the file in the datastore (1Mb limit) or the blobstore (32Mb limit?).
This link provides an example on using the blobstore to upload a file https://developers.google.com/appengine/docs/python/blobstore/#Uploading_a_Blob
Related
I know asp/php are serverside etc..however...
I would like to ask a user to select a dir on their computers hard drive, and be able to generate an XML file based on files found in this directory. I would then save xml file to website .
For example directory has 3 files in it.
c:\music\mp3\
bob1.mp3
bob2.mp3
bob3.mps
My background is vbscript/classic asp. But am happy to do this in PHP. I was wondering if JavaScript/Ajax might be my friend ??
Im not sure where to start ??
No web technology is allowed raw access to the user hard drive. You either need a browser plugin (you can write one!) or some executable on the client.
I am writing a scripts that processes the .csv file. The script currently have to upload the csv file to the server in order to process it, and the user have to download the processed file which is a lot of work from a user.
My question is, is there a way to process files from the user's directory path without the user having to upload the file first? So the user will just browse to the file to be processed and the file will be save and processed in that path.
Thanks,
Sbo
Then the only option you have is to do it client-side. To do it client-side you thus have to use a client-side technology like Flash or JavaScript. The latter is probably the better choice. The following URL explains how you can do a client-side file upload: http://igstan.ro/posts/2009-01-11-ajax-file-upload-with-pure-javascript.html
You want to get access to user's computer? Forget it.
Only way to achieve it is to use Java Applets with special permissions in php you need to upload it, it can be uploaded to temp directory but you need to still upload it.
Java Applets need to be signed and has certificate to be accepted by user. There is no other way I know to get access to user's files.
Check this link as well
I have a site that people upload large (2mb-3mb) files to, In large quantities. So I need to store them on an external drive (my drobo). How can I upload files to a folder on the server and then how can I write a php script that retrieves them and lets users download them.
Thanks,
Joey Sacchini
To do this, simply move your files into an accessible space.
http://php.net/manual/en/function.move-uploaded-file.php
Be sure to consider the implications of this though. Once you move an uploaded file to an open directory, anyone can access it. This is very dangerous. Imagine someone uploading a PHP script.
It is best to create a script that fetches files from a location not in the web root. At a basic level, you can store the file's properties, such as original name (you should rename them to something random on disk) and mimetype, to database. Then send the file to the client with readfile().
For downloading backups to your own personal hard drive, just use SFTP.
This is not a quick answer, you need to understand how to upload, retrieve, and save the file to the server; set write permissions for PHP and a few other things. I suggest you try these links to get you started fast:
http://www.w3schools.com/php/php_file_upload.asp
http://www.tizag.com/phpT/fileupload.php
Also visit the PHP reference manual for some great examples.
well u can keep the uploaded files outside of server directory. so if ur server root is /www/htdocs u can keep the files in say /uploaded. so use something like
move_uploaded_file($_FILES['file'],'/uploaded')
this way ur files will be inaccesible to the outside world
Hey just a quick question for anyone who has done this. I want to create a video tube site. I have done file uploads before but was wondering if anyone could give me suggestions on what I am planning to do.
The way I am planning is to have a folder in my web directory and to upload videos into the folder after virus scanning and checking mime. The video will then be converted and compressed using FFMPEG into flv.
I will change the name and store the video reference id in mysql so the file name can be fetched and served.
I will serve the files using HTTP_Download to a flash player
$dl = new HTTP_Download();
$dl->setFile("$path");
$dl->setContentDisposition(HTTP_DOWNLOAD_ATTACHMENT, "$path");
$dl->setContentType('video/flv');
$dl->send();
Anyone have any suggestions? Is it a good idea to put all videos in one directory?
You may want to consider a Java based uploader as PHP can run into timeout problems on large uploads.
Also do you FFMPEG processing as a CRON job not at upload as it takes a long time.
Look in something like Wowza Streaming Server to serve the videos. Allows streaming and everything is above the root. I name each video with a UID and send a parameter to the Flash video player to decide which one to play.
Where and how you store them will largely depend on how secure they need to be (i.e. should people be able to access the files in the directory directly? or should it be stored more securely than that?)
If direct access is fine, then putting them all in one folder is okay. If not, then you may want to obscure folder names, store them in a secure Database, or in a folder that is not accessible outside of the server.
Also, I'm hoping you're aware of the massive amounts of storage space and bandwidth such a service will consume? I hope you have a scaled solution ready to deploy if you're really serious about this..
I'd like to have my PHP script upload a file with a certain filename in a directory of my choosing. However, the catch is that I need it to exist there immediately upon upload so I can moniter it on my server. I don't want to use a PHP extension or something - this should be very easy to transfer to any PHP setup.
So basically: Is there a way to guarantee that, from the very beginning of the file upload process, the file has a certain name and location on the server?
Not that I'm aware of.
PHP will use the php.ini-defined tmp folder to store uploads until you copy them to their correct location with move_uploaded_file(). So it's very easy to know its location, but the file name is random and I don't think you can define it.
If you're not going to have multiple concurrent uploads (for example if only you are going to upload files and you know you won't upload 2 files at the same time), you could check the most recent upload file in the tmp directory.
The common solution for monitoring uploads is apc.rfc1867
I know of three options:
RFC1867 (as mentioned by others) which allows you to poll upload progress using ajax
Flash-based uploaders like SWFUpload which allow you to poll upload progress using JavaScript
Create a PHP command line daemon listening on port 80 that accepts file uploads, and used shared memory (or some other mechanism) to communicate upload progress. Wish I could find the link, but I read a great article about a site that allowed users to upload their iTunes library XML file, and it was processed live by the server as it was being uploaded. Very cool, but obviously more involved than the previous options.
I have had decent luck with SWFUpload in the past.
I don't think you can configure the name, as it will be a random name in the temporary folder. You should be able to change the directory, but I can't seem to find the answer on Google (check out php.ini).
As far as I know, this isn't possible with PHP, as a file upload request submits the entire file to the system in one request. So there is no way for the PHP server to know what is happening until it receives the whole request.
There is not a way to monitor file upload progress using PHP only, as PHP does not dispatch progress events during the upload. This is possible to do using a Flash uploader even if Flash is uploading via a PHP script. Flash polls the temporary file on the server during the upload to dispatch progress events. Some of the javascript frameworks like YUI use a SWF to manage uploads. Check out YUI's Uploader widget.
http://developer.yahoo.com/yui/uploader/