Rails upload large files

The jQuery File Upload Plugin This plugin is extremely full-featured and comprehensively documented, which was exactly the problem I had with it.

Some important points: I decided to use a simple JavaScript hashing function to hash the filename for the Session-Id. It might not need to be numeric, but all the nginx examples I read used numeric filenames, and the Session-Id is used directly by nginx as the filename on disk. As noted in the comment, the response to an individual upload request is a plain-text byte range, which is also present in the Content-Range header. The plugin uses this value to determine the next chunk of the file to upload.

This means that in order to resume an upload, the first chunk of the file must be re-uploaded. Then nginx responds with the last successful byte range, and the plugin will start from there on the next request.

This can be momentarily disconcerting, since it looks like the upload has started over. Set your chunk size accordingly. You must set multipart: false for resumable uploads to work. It was pretty sweet once it worked, but the journey was arduous. Hope this helps some people. Let's create a basic structure of the application by using simple rails command. Let's decide where you would like to save your uploaded files. Assume this is data directory inside your public section. So, create this directory and check the permissions.

As this is not a database-based application, we can keep whatever name is comfortable to us. Assume we have to create a DataFile model. This method will be called by the application controller. Here File is a ruby object and join is a helper function that will concatenate the directory name along with the file name and will return the full file path. Next, to open a file in write mode, we are using the open helper function provided by the File object.

Further, we are reading data from the passed data file and writing into output file. Create part of 1 Mo of my file and send them in binary. It's better but not the perfection. Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams? Collectives on Stack Overflow. Learn more. Rails upload large file Ask Question. Asked 4 years, 4 months ago.

Active 4 years, 4 months ago. Viewed 2k times. I ran into some difficulties while uploading larges files using rails 5. File is uploaded using ajax and simply grab inside a rails controller.

Used server is : puma. The file transfer is speed followed by ajax xhr progress, in a local network Gigabit. The code work perfectly for small files like images. I want to eat this "Rack" Thanks, Seb. Oncleroger Oncleroger 71 1 1 silver badge 8 8 bronze badges.