Lazy load the React Rails view helper in a railstie

[s6577t]

As discussed in #68

[s6577t]

I'm currently testing this in a Rails 4 app

[s6577t]

From: /vagrant/react-rails/lib/react/rails/railtie.rb @ line 25 :

    20:       end
    21:
    22:       # Include the react-rails view helper lazily
    23:       initializer "react_rails.setup_view_helpers" do
    24:         ActiveSupport.on_load(:action_view) do
 => 25:           binding.pry
    26:           include ::React::Rails::ViewHelper
    27:         end
    28:       end
    29:
    30:       # run after all initializers to allow sprockets to pick up react.js and

[1] pry(ActionView::Base)> 

[s6577t]

The blocks context is ActionView::Base; this works

[xionon]

Code: 👍

CI Fail: "ReferenceError: Can't find variable: Turbolinks"

This is the most annoying bug. I am 99% sure that it's not your code that failed, it's that sometimes Poltergeist isn't waiting for the javascript to fully finish parsing before it tries to call Turbolinks.

I had to work around it using sleep(1) in xionon@decfcae

[zpao]

This supersedes both #61 & #68, correct?

As long as this still works in Rails < 4 (looks like jruby tests are all passing so I assume it does), then this seems fine to me. The Turbolinks thing is annoying :/

[xionon]

@zpao Correct, this supersedes both #61 and #68

I created #75 to help me remember to work on the Turbolinks thing tomorrow.

[s6577t]

The lazy load feature was introduced in Rails 3 (http://simonecarletti.com/blog/2011/04/understanding-ruby-and-rails-lazy-load-hooks/)

[zpao]

Awesome, thanks guys!