This gem provides a few features to a Rails app which aid the production of a mobile-targeted UI.

Firstly, it provides the mobile_only and mobile_optional blocks to your routes, these let you define particular routes which can only be accessed via your mobile prefix (default: /mobile) or ones which will work for both desktop and mobile. For details on customising the prefix, and exact usage of the routes helpers, see the "Usage" section below.

Add this line to your application's Gemfile:

gem "mobile-enhancements"

And then execute:

$ bundle

Or install it yourself as:

$ gem install mobile-enhancements

In your config/routes.rb file:

YourApp::Application.routes.draw do
  # accessible via /items and /mobile/items
  mobile_optional do
    resource :items
  end
  
  # only accessible via /mobile/barcode_scanner
  mobile_only do
    get :barcode_scanner, to: "scans#new"
  end
  
  # only accessible via /guides (normal routing)
  resource :guides
end

By default the path prefix for mobile routes will be mobile/. The app will also use layouts/application.mobile.erb as the root mobile UI template unless specified otherwise.

You can customise these options by creating an initializer, here's an example config/initializers/mobile_enhancements.rb file (the defaults):

require "mobile_enhancements"

MobileEnhancements.configure do
  mobile do
    # defines the path prefix used
    prefix "mobile"
    # defines the global view file
    layout "mobile"
    # defines the 'format' in view.format.renderer view filenames,
    # to use the same HTML as standard actions, simply set to "html"
    format "mobile"
  end
  
  desktop do
    layout "application"
  end
end

Notes

1. in your application controller, a determine_layout method will be defined which will choose which layout file it needs, if you want to override this in your own controllers, you can always use super to reference the original.

2. if you use a format like "mobile", instead of "html", then you'll need to update your controller's respond_to :html, :json method to include mobile in the list (or whatever you choose for your format)

A few helper methods are also provided (accessible both by your views and controllers):

mobile_request?
mobile_path(path_to_convert)
mobile_url(url_to_convert)
desktop_request?
desktop_path(path_to_convert)
desktop_url(url_to_convert)

1. Fork it
2. Create your feature branch (git checkout -b my-new-feature)
3. Commit your changes (git commit -am 'Add some feature')
4. Push to the branch (git push origin my-new-feature)
5. Create new Pull Request