I already implemented the chat function using actioncable but don't know how to send file through it or is it even possible or not.
I am trying to make chat application where user can upload file in chatroom other users can see that immediately without reloading the page as actioncable offers.
It's possible to upload files using websockets. (File upload using java websocket API and Javascript)
But through ActionCable that's not possible at the moment. As ActionCable wraps the Websocket in Javascript this is also going to be "hacky" to patch this in, so I would wait for a new release and write an issue on the rails repo instead.
So for your chat app you still need to use a normal form submit to upload a file. If you want it to happen asynchronously you can use my "patched" version of jquery-ujs which allows sending files with the "data-remote=true" flag.
See https://github.com/Elektron1c97/jquery-ujs-files
It's possible by transforming your file into a base64 data url on the client via some js then to send this url thru actioncable to the server who's gonna broadcast just a base64 data url.
I have test it with image, audio and video files. Not with pdf or txt but it should work. For big file like a video it's instable.
It's just experimental.
Voilà.
Related
I'm generating temporary audio files using Rails and storing them in the tmp directory in Heroku. I think want to send the audio back to Expo/React Native to be played. How can I use Rails to serve that data as a POST response?
In my Rails API backend, I connect to a Text-to-Speech API (Google), and generate an mp3 from text. I can verify that these files are being correctly created and stored in tmp as per my POST request. I am missing the conceptual piece of how to return them back.
It's ideal for me that these files are temporary, as I only need them during a single session. I can see a couple of options.
I can save the files as .mp3s in tmp, as I'm currently doing, and find a way to attach them to my POST response.
I get the audio back from the API as binary, so I can skip saving the files as .mp3s, and respond to the POST with the binary as JSON, or something.
???
Play sound in Expo/ React Native
I'm trying to avoid setting up an AWS bucket for this if possible, but if that's the best way to do it, I'm happy to hear that as well.
Thanks!
I'm writing rails application. My task is to show data from old java application. One of the objects has images attached, I have to display these images and allow user to add new ones.
I want to know what is the best way to let user uploading images to old app.
Old app has http post method for adding images with params: multipart file, md5 hash of the image and object id.
I tried using paperclip or carrierwave but their documentation is about saving uploaded images and I just want to transfer them somewhere else and not save anything.
there are few ways to communicate with java from ruby.
REST API - expose Java functionalities through endpoints. then use an HTTP client.
Remote Procedure Call - Apache Thrift
JRuby - embedded java programme into Ruby
however, I think maybe you can just proxy the Java API without going through the rails application.
I'd like to use Rails as a backend to a mobile app (Android and maybe iOS), and one of the requirements is file upload.
I haven't been able to find any resources on using Activestorage with direct upload in this way – does anyone have an example or tips?
The alternative – I suppose – is to reverse-engineer activestorage.js and do exactly what it does. But perhaps I'm not the first one with this need...
Rails does not care if your data is sent from a mobile-app, html-form, react-app, server-to-server...
If you can authenticate the request and send a multi-part file, then you do active-storage from your app.
Probably smart to look at gems/apps that do this already https://github.com/cbothner/react-activestorage-provider
So here's the thing. I believe my case is pretty particular at this point, and some help from the experts it's highly advisable.
I have an API built on Rails (3.2.6) and what I want to able to do is receive a video file (mostly .mp4, .avi) and upload it to s3 through a Process Queue (Using Resque).
Now I'm kind of lost on how to do this. To my understanding, I would be receiving a byte[] (Array of bytes) through the request which is the video and send that as a param to my Resque job in order to upload it (Resque Job params can only be strings, not objects)?
Has anyone had any experience doing this sort of procedure. We're pretty much trying to mimic the http://docs.brightcove.com/en/media/ create_video method. Where a Video object can be created either by sending the direct file in the request or the link the file....
Any suggestions?
Try using the CarrierWave gem. You should allow someone to HTTP POST the file data to your API, and then save that file data on the backend and upload it to S3 using CarrierWave.
i am using paperclip gem to upload images on the server side, i need to get updated with the bytes loaded on server through the upload process.
my aim is to update the progress bar accordingly. how do I do this?
You can only do this by using a Flash-based uploading tool which has direct access to the file and the upload stream. Just integrate it with Paperclip (and there are a ton of examples on google showing how to)
I would recommend one of these:
http://plupload.com/
http://www.uploadify.com/