How to upload file via the JSON interface in Rails

Posted by akafazov on Stack Overflow See other posts from Stack Overflow or by akafazov
Published on 2010-05-04T08:20:03Z Indexed on 2010/05/04 8:28 UTC
Read the original article Hit count: 287

Filed under:

rails

|

JSON

|

upload

|

paperclip

Hi,

I have a web service in Rails which among all else should provide file upload functionality to the clients. The clients all use JSON to talk to the webservice. I use the Paperclip plugin for upload management.

The problem is I do not know how to upload a file via JSON. All works in the web formular, but I cannot find information on how to consctruct my JSON Request to send files to the server. Can somebody help out?

Regards, Angel Kafazov

© Stack Overflow or respective owner

Related posts about rails

Ruby on Rails: url_for :back leads to NoMethodError for back_url

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi all, I'm trying to use url_for(:back) to create a redirect leading back to a previous page upon a user's logging in. I've had it working successfully for when the user just goes to the login page on his or her own. However, when the user is redirected to the login page due to accessing a page… >>> More
Why am I getting "ArgumentError: wrong number of arguments (1 for 0)" when running my rails function

as seen on Stack Overflow - Search for 'Stack Overflow'
I'm stumped on what's causing this. I get this error and stack trace in all my functional tests where I call 'post'. Here is the full stack trace: 7) Error: test_should_validate(UsersControllerTest): ArgumentError: wrong number of arguments (1 for 0) /Users/hisham/src/rails/ftuBackend/vendor/rails/actionpack/lib/action_controller/routing/route… >>> More
Spork servers super slow (>3m) to start for RSpec & Cucumber BDD

as seen on Stack Overflow - Search for 'Stack Overflow'
I recently installed a fresh development setup on my laptop and now notice that my instances of spork take several minutes to start up. This is also most likely of the RSpec and Cucumber tests start up times running super slow. I ran in diagnostic mode with the -d flag and received the output below… >>> More
trying to convert rails 2.3.4 app to rails 3 but views not appearing

as seen on Stack Overflow - Search for 'Stack Overflow'
I have a simple rails 2.3.4 application I am trying to get running with rails 3.0.0-beta2. I have the server running and all my links and navigation showing, however for some reason the content of my views is not displaying. When I navigate to Site/index the html in my index.html.erb in my site… >>> More
Create new Rails project with previews rails version

as seen on Stack Overflow - Search for 'Stack Overflow'
Hello, The latest version of rails installed on my mac is 3.0.0.beta gem list returns rails (3.0.0.beta, 2.3.5, 2.3.4, 2.3.2, 2.2.2, 1.2.6) I want to create a new project using version 2.3.5 So I run: rails _2.3.5_ myProject But it returns the following error $ rails _2.3.5_ photosbackup /Library/Ruby/Site/1… >>> More

Related posts about JSON

Using JSON.NET for dynamic JSON parsing

as seen on West-Wind - Search for 'West-Wind'
With the release of ASP.NET Web API as part of .NET 4.5 and MVC 4.0, JSON.NET has effectively pushed out the .NET native serializers to become the default serializer for Web API. JSON.NET is vastly more flexible than the built in DataContractJsonSerializer or the older JavaScript serializer. The DataContractSerializer… >>> More
Azure Mobile Services: what files does it consist of?

as seen on ASP.net Weblogs - Search for 'ASP.net Weblogs'
Azure Mobile Services is a platform that provides a small set of functionality consisting of authentication, custom data tables, custom API’s, scheduling scripts and push notifications to be used as the back-end of a mobile application or if you want, any application or web site. As described in my… >>> More
Retrieving Json Array

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi, I am trying to retrieve the values from the following url: http://rentopoly.com/ajax.php?query=Bo. I want to get the values of all the suggestions to be displayed in a list view one by one. This is how i want to do... public class AlertsAdd { public ArrayList<JSONObject> retrieveJSONArray(String… >>> More
Deserializing JSON data to C# using JSON.NET

as seen on Stack Overflow - Search for 'Stack Overflow'
I'm relatively new to working with C# and JSON data and am seeking guidance. I'm using C# 3.0, with .NET3.5SP1, and JSON.NET 3.5r6. I have a defined C# class that I need to populate from a JSON structure. However, not every JSON structure for an entry that is retrieved from the web service contains… >>> More
Parsing nested JSON objects with JSON Framework for Objective-C

as seen on Stack Overflow - Search for 'Stack Overflow'
I have the following JSON object: { "response": { "status": 200 }, "messages": [ { "message": { "user": "value" "pass": "value", "url": "value" } ] } } I am using JSON-Framework (also tried JSON Touch) to parse through this and… >>> More