My main objective is to upload files to drive from my device ( a web application in JS) and read files from Drive. Exploring for the same scenario , i was confused with two API-SaveToWeb and FilePicker , from Google drive , which actually provides the same functionality (upload files to drive ) .
Help me to understand which one is used in which scenario ?
In some scenarios you could use either, but it depends a bit on your use case and the UX you want.
The save to drive button is useful when you know the specific file that the user will want to save. Its a very simple UX where you just put the button next to the specific file(s).
The file picker is used when you want the user to select the file that they will update. Its a little more involved, but gives the users more control over what they select.
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I need to upload files and folders to the server while preserving the hierarchy. At the moment I am using a plugin multiFileUpload that allows you to upload multiple files at the same time, but it ignores the selected folders. I know that neither vaadin nor Html5 has a universal solution that works everywhere for uploading folders.
I'm ready to write my own solution, but climbed the Internet can't find a way to display file selection (perhaps there will a JavaScript call) but the main question - is it possible somehow to POST a request Vaadin's and upload files by way of creating subfolders in which they were?
You can only upload files, not folders. It's simply not doable.
You can upload any number of files, but they won't be structured into folders.
I see two possibilities how you could still achieve what you need if you really wanted to, even if it changes the user experience a bit:
Let the user upload a .zip file of his folder structure. When they upload it, you unzip it on the server side and have now access to all the files in the correct folder structure.
Let the user upload all his files within his folder structure. After all files have been uploaded, You display all the files in a TreeGrid where the user can recreate the original structure using Drag-and-Drop or similar.
I have a problem about PDF file encryption using php.
Case: Let's say I have a local system (web based) to upload and download files, such as 4sh*red (dot) com, but it just allows PDF file. A user sign up and login to download the PDF files using his or her own personal computer. After users downloaded a PDF file from my system, the file can be viewed only on computer where they downloaded the file. But, if another user copy it (I mean: downloaded PDF file) to another computer, the file can't be viewed on that computer.
Note: I don't mean here about protecting the PDF files using password because nowadays there are a lot of softwares used to remove PDF's password protection. But, the file can't be viewed at all if copied to another computer.
Can we do that in php? If yes, do you know any algorithm to solve the case?
I really appreciate your response or answers.
Thank you.
The PDF format is an open format by Adobe. This means there are a lot of programs out there that can read it and quite same that can modify it.
If you write your own program and add some stuff to the PDF, then maybe you can do this.
Another question is - why don't you just make the document visible in the web browser to the user? Of course there's still going to be a way around for savvy users to get it, but most noobs wouldn't know how and you can easily close the simplest blocks (like right click / save).
What maybe interesting to do is what a lot of companies are doing with videos nowadays: you can dynamically add some hidden or visible 'info' to a PDF that identifies who you sent it to. In that way, if the PDF shows up somewhere else - you know who spread it.... Again - PDF is an open format, so anyone can always erase whatever you write in the main contents, so you'd have to add a hidden image to the content or something.
I have Google'd this subject a lot over the past few days, but I cannot find a best practice solution. My question is basically how do I script in LR a fileupload? My app consists of a browse button, a pop up that lets me locate the file and it closes after I have located the file. Finally the app has a upload button to upload the file.
My script is recorded using URL mode and I guess I need to create some kind of custom request? URL mode creates somewhat complex scripts and placing custom requests inside these script is challenging.
BTW: I have not tried to record and play back the file upload process described yet, and using URL mode might just solve it without further customization? Or did someone actually made file upload using LR and URL mode work? A small example would be greatly appreciated!
Different applications will go about uploading a file from a client to a server in different ways. Your best bet is to record your application doing the upload and taking a look at what LoadRunner records.
Mark the point before and after the upload as you record by creating a transaction so you can easily find the spot in your code where the upload actually happens.
I'm building an app that has projects. A project can have many files in it which are pointed to from a project file. Theses files are copied to the projects folder so I know where they will be but as far as I know in WinJS you can only get access to files the user directly give access to. The user will select the project file, I'll be able to read it but I'll have no way to access the projects files. I do know I can do something like package the project up as a single file and then extract the individual files in my apps local file system but doing so is sub-optimal to me and I'd prefer to do the folder based structure if I can.
I'm not entirely sure I get it, but I'll give it a shot. In a Windows Store app, you do have access to more than just what the user directly gives access to. If you want to pick a file from anywhere on the computer (our from other apps through the FilePicker contract) then, yes, the user has to pick them, but you app has full access to the isolated storage and if it declares access to the user's documents library and the user allows it, then you have access (to your declared file types) in there as well.
I think the choice of going to isolated storage versus the user's document library comes down to whether or not the user would expect to have the project files outside of your app. Might they email a project to a friend? Might they manipulate the project with another app? Might they want to back the project up? If so, then use their documents library. If not, then the data is more application data than user data and could be stored in the local app storage.
Hope that answers the question. If not, then please clarify.
I'm new at writing code for websites. The website allows users to upload files, such as profile pictures or other pictures. The files are saved in the unix file system and the URLs to find those images are stored in a MySQL database.
It seems like the only way I can let the user upload files is to give write access to anybody using chmod. Otherwise it complains that it doesn't have write permissions. But they shouldn't be able to write whatever they want or overwrite other users stuff. Similarly, to allow users to see images that they have rightful access to, they need read permissions on the file system. But now that means that anybody with the url to that picture can see the image too, correct? That's not what I want.
Is there a solution to this contradiction? Or am I thinking about the problem incorrectly? Thanks for any help.
You need to manage the permissions in your application and not expose arbitrary parts of your local filesystem directly to the clients. Your application should decide what files someone can see or where to write data. You should not trust data (filenames, etc) from your clients...ideally, store files on disk using systematically generated names and store human-readable names in the database.
SunStar9,
Since you are already using a MySQL database to store the URL of the image on the file system, why not just store the image itself as a BLOB (binary large object)?
This is generally a well-accepted design practice for allowing users to upload binary data to a website.
Are you using PHP, Java, Ruby/Rails, or something other to develop your website? Depending on what you are using, there could be file upload/management plugins or modules that will help you develop what you are trying to do if you are certain you want to use the files ystem for storing the image data.