rack-jquery-params

A Rack middleware that bridges the discrepancy between jQuery.param and how Rack parses nested params within query strings and post bodies.

If you use jQuery's get, post, put, or ajax methods then jQuery.param is run on your data. The problem is that jQuery.param turns this javascript object:

{test: [{this_is_an_object_inside_an_array:'yes'}]}

into a query string that Rack cannot read correctly:

test[0][this_is_an_object_inside_an_array]=yes

Rack expects all arrays to be sent as empty brackets (i.e., "test[]"). It parses jQuery's "test[0]" as a hash, resulting in the following params:

{
    :test => {
        :0 => {
            :this_is_an_object_inside_an_array => 'yes'
        }
    }
}

This gem fixes the above params and converts it to:

{
    :test => [
        {
            :this_is_an_object_inside_an_array => 'yes'
        }
    ]
}

Install the gem:

gem install rack-jquery-params

In your Gemfile:

gem 'rack-jquery-params', :require => 'rack/jquery-params'

Activate by including it your config.ru file:

use Rack::JQueryParams
run Sinatra::Application

By default the JQueryParams fix is applied to all http methods, however you can change this functionality by setting the applies_to option with your chosen http method:

use Rack::JQueryParams :applies_to => :get

You can also set applies_to to be an array of http methods:

use Rack::JQueryParams :applies_to => [:get, :put, :delete]

Please refer to LICENSE.md.