I am a complete beginner in Flash & Actionscript.
My pet project is this: To provide a www.imageshack.com like service where people could upload single images and later anyone can view it using the generated url.
So far I have gotten to upload an image using Flash and store it in a directory.
http://pixels.guygar.com/
You can check the uploaded image at:
http://pixels.guygar.com/warehouse/
The issue being, I was under the impression when the PHP file is called to store the image in the folder /warehouse the browser would automatically navigate to:
http://pixels.guygar.com/upload.php
Where I can process the image i.e. generate a unique file name and provide the user with a unique URL to later access the resource.
What is happening is the image gets uploaded by the PHP script but the browser page still stays the same page even when providing a new url in the PHP script.
So the question is how do I go about so that a new URL (image resource linked) is passed back to the flash so that onComplete is called I can navigate to image that was just loaded? Or other ways of doing such?
I welcome your perspectives on this issue and thank you for your guidance.
i would store all values that you need later on in a session on the server (don't forget to pass the sessionID to the upload-script via GET).
at the end of the PHP script you just return "ok" (or "ko" if sth went wrong) to flash and then (in the callback/listener) call/load a second PHP-script that's doing the rest ... and returns you an URL to a thumbnail or whatever you want to do.
hope this points you in the right direction ...
http://help.adobe.com/en_US/FlashPlatform/reference/actionscript/3/flash/net/FileReference.html?filter_flash=cs5&filter_flashplayer=10.2&filter_air=2.6#event:uploadCompleteData
Shows how data can be returned to flash after an upload.
Related
im new in ruby, here u can find my code: https://bitbucket.org/Messeir/reddit
I used carrierwave gem for uploading photos. Unfortunatelly i dont know how to show uploaded photo on main site near to submited links?
Here are a few thoughts.
The photo is uploaded. We're assuming that it'll land on the file system of your server somewhere.
After you receive the file upload, as a prototype, try to move the file in the Rails root "public/images" directory. On your page, you could try an image tag as such:
If that works, you can tell at least that your "file-upload-save-to-disk" operation is working.
In a second phase, save the file somewhere else, say in a /data/images directory. Create a controller that will respond to a /mycontroller/myimage?... url, an in that method, respond with the image content.
That's pretty rough but it's a start. Let me know how it goes.
I have used paperclip to allow me to upload files to a rails application. Everything works and the file is uploaded, but instead of seeing a link to the actual file itself I see the location of it within the systems folder of the rails project.
I'm guessing its either a routing issue or I need to create a link to the file in question. However, I would like to hide the location of the file itself, and only see the link displayed.
I would be very grateful if someone could point me in the right direction here.
You want to hide the actual path of the file in the server, right?
You can achieve that using send_file (http://api.rubyonrails.org/classes/ActionController/DataStreaming.html#method-i-send_file) in a normal controller.
You will still need to do something to protect the download using the real path.
Basically, this is what my app does:
It sends an AJAX request
The server creates a file
The server sends back the URL of the
file location
The client-side will attempt to
create a dialog to download the file
at that location (probably using a
frame? I haven't got this far yet).
My question is, how do I dynamically route to the files I create so that they are accessible when you browse to them? If I don't add a route for them, then they will get a 404 if they try and access the directory they're in.
The files are currently stored in a folder in public.
Would the best way to deal with this make the folder somehow not require a route, so that it can be browsed to directly, and then have an index page on it so they can't view the full list of files? If so, please let me know how I can accomplish this. And on a side note, if you have an idea of how I can accomplish JS displaying the download dialog let me know.
It's Rails 3 by the way.
Thanks!
For a full private set of files: choose a place for your files outside your public directory, then configure X-SendFile support in your web server and finally use send_file in your rails application.
As it takes some time to prepare the content of the data to be downloaded, I want to show a message "Preparing file to download" when the user submits the request
Then when the file is ready, I use send_file to send the data
Once it's done, I need to clear the message
Thanks a lot
Here is what I would do.
1. Create a prepare_file action
First, I would create an action whose job would just be to create the file and rather than rendering HTML, it would render a JSON object with the name of the file that was created.
2. Use AJAX to call the prepare_file action
On the client, when the user clicks to download the file, you display the message, "Preparing download..." and just do an AJAX request to that action. The response you'll get back via AJAX is the name of the file created.
3. Redirect to the file download
Finally, you can hide the preparing download message and redirect the browser to the file download via JavaScript with the name of the file that was created. You would use send_file in this action.
I know that, in the question, you also wanted to be able to display to the user a message when the file is downloading and another message when it is finished. However, this isn't possible unless you write your own client-side download manager. The browser handles file downloads entirely and the user will see in the browser that the file is downloading and what the progress is. So, I understand where you're coming from, but you shouldn't feel like the user isn't being informed of what's happening.
At least with this solution, you're displaying a message to them when the file is being prepared and then once that message disappears, they'll get the download file dialog from the browser.
If you need help with actual code samples of how to do this, let me know.
We are developing a functionality that allows the users to save the downloaded file. We are struggling to get a popup where the user can select a target location / folder to save his file. Can this be achieved using rails?
I think you're looking for send_file - it's very easy to use.
I think it depends on the content-type and similar headers you're returning to the user.
Try returning something like:
header('Content-disposition: attachment; filename=movie.mpg');
header('Content-type: video/mpeg');
EDIT: I am assuming you're able to generate headers and returning a file to the user by HTTP (no simple links to files)
I think you are trying to give something like file browser dialog box which allows client to save file on a particular location.
In case you are trying to give this from your server then I should say it is not possible due to security restriction which browser makers have applied to ensure client's security.
Another way is to let client download your browser plugin/activeX Control which basically is control over client's machine then you can do what you want i.e. something like this also.
I think without this the filetype downloaded by client is identified (based on headers) by browser and it opens the file save dialog box automatically and you cant enter into client's secure arena.
I think you want download file option. For example on hitting a URL you
want user to download a zip file code for it you can do something like
this:
class MyController < ApplicationController
def downloadzip
send_file "path_to_file", :type=>"application/zip"
end
end